CN113899527B - Method for correcting surface temperature of test model - Google Patents
Method for correcting surface temperature of test model Download PDFInfo
- Publication number
- CN113899527B CN113899527B CN202111477526.5A CN202111477526A CN113899527B CN 113899527 B CN113899527 B CN 113899527B CN 202111477526 A CN202111477526 A CN 202111477526A CN 113899527 B CN113899527 B CN 113899527B
- Authority
- CN
- China
- Prior art keywords
- temperature measuring
- temperature
- measuring point
- point
- effective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/08—Aerodynamic models
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
Abstract
The invention is suitable for the technical field of wind tunnel tests, and provides a method for correcting the surface temperature of a test model, which comprises the following steps: acquiring a temperature value of each temperature measuring point, wherein if a temperature factor of the temperature measuring point is not less than a preset parameter, the temperature measuring point is a failure temperature measuring point; if the temperature factor of the temperature measuring point is less than the preset parameter, the temperature measuring point is an effective temperature measuring point; the temperature factor is the stability of the temperature value of the temperature measuring point within a preset time: taking the temperature value of the reference temperature measuring point as the correction temperature of the failure temperature measuring point; the reference temperature measuring point is a temperature measuring point in an effective temperature measuring area, the relative distance between the reference temperature measuring point and the invalid temperature measuring point is the same as that between a straight line of the temperature measuring point in the temperature measuring direction and the corner point of the front edge line. The method for correcting the surface temperature of the test model provided by the invention can accurately measure the surface temperature of the anti-icing part and improve the efficiency and accuracy of an anti-icing test.
Description
Technical Field
The invention relates to the technical field of wind tunnel tests, in particular to a method for correcting the surface temperature of a test model.
Background
Icing of aircraft components can damage the aerodynamic profile of the aircraft, leading to reduced aerodynamic performance, and is one of the more significant sources of risk in flight safety accidents. The aircraft component deicing verification test mainly aims at evaluating the component deicing and deicing characteristics and is completed mainly by means of an icing wind tunnel at present. The hot gas deicing and preventing mainly leads the hot gas generated by an aircraft engine into a deicing and preventing area, and the electrothermal deicing and preventing mainly keeps or quickly reaches the surface temperature of a part above zero through the electrifying heating effect and the deicing and preventing area of the corresponding part. Therefore, the change of the surface temperature of the deicing component is a key index reflecting the hot air and electric heating deicing effects, and is also a main basis for improving the deicing process and optimizing the model design. In icing wind tunnel hot air and electric heating ice prevention and removal tests, how to accurately measure the surface temperature of an ice prevention and removal component is a key point of the test.
Based on the icing control verification test of the icing wind tunnel, an icing control component faces extreme test environments, such as: high wind speed, high humidity, water droplet impingement, variable density, temperature shock, high heat source temperature, etc., which extreme test environments pose significant challenges for temperature measurement. Meanwhile, the extreme test environment can damage a small part of sensors, so that the corresponding temperature measuring point data is lost or invalid, the accuracy of temperature distribution is reduced, the anti-icing test cannot be accurately measured and verified, the process of the anti-icing test is influenced, and the test efficiency is reduced.
In summary, the technical problems to be solved by the present invention are:
1. in the prior art, in icing wind tunnel hot air and electric heating ice prevention and removal tests, how to accurately measure the surface temperature of an ice prevention and removal component is to be measured;
2. in icing wind tunnel hot gas among the prior art, electric heat prevents that deicing part faces extreme test environment, and extreme test environment can lead to often that the sensor receives the damage, and then has influenced the accuracy of temperature distribution measurement, has influenced the process of preventing and removing icing test, has reduced test efficiency.
Disclosure of Invention
The invention aims to provide a method for correcting the surface temperature of a test model, which can accurately measure the surface temperature of an anti-icing part and improve the efficiency and the accuracy of an anti-icing test.
The invention provides a method for correcting the surface temperature of a test model, wherein a plurality of temperature measuring regions are arranged on the test model along the extension direction of a leading edge line of the test model, the extension direction of the temperature measuring regions is the temperature measuring direction, a straight line where the temperature measuring direction is located is intersected with the leading edge line, each temperature measuring region is sequentially provided with a plurality of temperature measuring points along the temperature measuring direction, the distance between each temperature measuring point and the leading edge line in the arrangement direction on different temperature measuring regions is the same, and the arrangement direction is the direction perpendicular to the extension direction of the leading edge line, and the method comprises the following steps:
step S10: acquiring a temperature value of each temperature measuring point, wherein if a temperature factor of the temperature measuring point is not less than a preset parameter, the temperature measuring point is a failure temperature measuring point; if the temperature factor of the temperature measuring point is less than the preset parameter, the temperature measuring point is an effective temperature measuring point; the temperature factor is the stability of the temperature value of the temperature measuring point within a preset time length;
step S20: taking the temperature value of the reference temperature measuring point as the correction temperature of the failure temperature measuring point; the reference temperature measuring point is a temperature measuring point in an effective temperature measuring area, the relative distance between the reference temperature measuring point and the invalid temperature measuring point is the same as that between the temperature measuring point and the intersection point of a straight line where the temperature measuring direction is located and a leading edge line in the temperature measuring direction;
the effective temperature measuring regions are obtained through common effective temperature measuring points in the invalid temperature measuring regions and common effective temperature measuring points in other temperature measuring regions, the common effective temperature measuring points are the temperature measuring points which have the same relative distance and are the effective temperature measuring points in the invalid temperature measuring regions and the other temperature measuring regions, the other temperature measuring regions are the temperature measuring regions except the invalid temperature measuring regions, and the invalid temperature measuring regions are the temperature measuring regions where the invalid temperature measuring points are located.
Further, the temperature factor is a standard deviation or a variance of a temperature value of each temperature measuring point in a preset time period.
Further, the effective temperature measuring area is the temperature measuring area with the largest number of effective temperature measuring points in other temperature measuring areas.
Further, the effective temperature measuring area is the temperature measuring area with the minimum average temperature difference factor, the average temperature difference factor is the average value of the effective temperature difference factors, and the effective temperature difference factor is the relative stability degree of all common effective temperature measuring points in the invalid temperature measuring area and the other temperature measuring areas.
Further, the effective temperature difference factor is a standard deviation between a temperature value of a common effective temperature measuring point in other temperature measuring areas and an average temperature value of the common effective temperature measuring point in the invalid temperature measuring area.
Further, when the reference temperature measuring point is an effective temperature measuring point, taking the temperature value of the reference temperature measuring point as the temperature value of the failure temperature measuring point; and when the reference temperature measuring point is the failure temperature measuring point, performing data fitting on all effective temperature measuring points in the effective temperature measuring area to obtain a temperature value of the reference temperature measuring point, and taking the temperature value of the reference temperature measuring point as the temperature value of the failure temperature measuring point.
In summary, the present invention can achieve at least the following technical effects:
1. according to the invention, the plurality of temperature measuring areas are arranged on the surface of the test model, the plurality of temperature measuring points are arranged in the extending direction of each temperature measuring area, and the distances between the temperature measuring points on different temperature measuring areas and the front edge line in the arrangement direction are the same, so that a precondition is provided for correcting the temperature of the failed temperature measuring point, and the correction of the temperature value of the failed temperature measuring point through the temperature values of the corresponding temperature measuring points in other temperature measuring areas except the temperature measuring area where the failed temperature measuring point is located is possible, thereby avoiding the procedures of reducing the test efficiency due to repeated inspection, replacement and the like caused by a few failed temperature measuring points, improving the efficiency of the temperature measurement test in the icing wind tunnel, and simultaneously ensuring the accuracy of the test result;
2. according to the invention, whether the temperature measuring point is invalid or not is judged by judging the sizes of the temperature factor and the preset parameter, so that the invalid temperature measuring point is obtained efficiently and timely, the subsequent treatments of repairing, replacing, correcting and the like are conveniently carried out on the temperature measuring point, the problem of inaccurate temperature measurement caused by the invalid temperature measuring point is effectively avoided, and the efficiency of the anti-icing and deicing test is improved;
3. according to the invention, the temperature value of the reference temperature measuring point is taken as the correction temperature of the failure temperature measuring point, and the reference temperature measuring point is the temperature measuring point with the same relative distance with the failure temperature measuring point in the effective temperature measuring area, so that the correction of the temperature value of the failure temperature measuring point is realized, the correction temperature is closer to an actual value, the efficiency of a temperature measurement test in a freezing wind tunnel is improved, and the accuracy of a test result is ensured;
4. according to the method, the effective temperature measuring area is determined through the common effective temperature measuring point in the invalid temperature measuring area and the common effective temperature measuring points in other temperature measuring areas, the other temperature measuring areas are optimized through the common effective temperature measuring points, the temperature measuring area which is closer to the temperature change trend of the invalid temperature measuring area or the temperature value of the invalid temperature measuring point is obtained and serves as the effective temperature measuring area, the temperature of the temperature measuring point at the position corresponding to the invalid temperature measuring point in the effective temperature measuring area serves as the correction temperature of the invalid temperature measuring point, the accuracy of the correction temperature of the invalid temperature measuring point is further guaranteed, and the accurate measurement of the surface temperature of the anti-icing part is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a method of correcting the surface temperature of a test pattern in the present invention;
FIG. 2 is a sectional view of a measuring device for the surface temperature of the test pattern in the present invention;
FIG. 3 is a first schematic diagram of a device for measuring the surface temperature of a test model according to the present invention;
FIG. 4 is a second schematic view of the apparatus for measuring the surface temperature of the test model according to the present invention;
FIG. 5 is a schematic representation of the effectiveness of the test model surface temperature measurement points of the present invention.
The test model comprises 100, a test model 110, a front edge part 111, a temperature measuring point 112 and a front edge line.
Detailed Description
The following description provides many different embodiments, or examples, for implementing different features of the invention. The particular examples set forth below are illustrative only and are not intended to be limiting.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection: may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the invention provides a method for correcting the surface temperature of a test model, wherein a plurality of temperature measuring regions are arranged on the test model 100 along the extending direction of a leading edge line 112 of the test model 100, the extending direction of the temperature measuring regions is the temperature measuring direction, a straight line where the temperature measuring direction is located is intersected with the leading edge line, each temperature measuring region is sequentially provided with a plurality of temperature measuring points along the temperature measuring direction, the distance between the temperature measuring points on different temperature measuring regions and the leading edge line in the arrangement direction is the same, and the arrangement direction is the direction perpendicular to the extending direction of the leading edge line, as shown in fig. 1, the method comprises the following steps:
step S10: acquiring a temperature value of each temperature measuring point, wherein if a temperature factor of the temperature measuring point is not less than a preset parameter, the temperature measuring point is a failure temperature measuring point; if the temperature factor of the temperature measuring point is less than the preset parameter, the temperature measuring point is an effective temperature measuring point; the temperature factor is the stability of the temperature value of the temperature measuring point within a preset time length;
step S20: taking the temperature value of the reference temperature measuring point as the correction temperature of the failure temperature measuring point; the reference temperature measuring point is a temperature measuring point in an effective temperature measuring area, the relative distance between the reference temperature measuring point and the invalid temperature measuring point is the same as that between the temperature measuring point and the intersection point of a straight line where the temperature measuring direction is located and a leading edge line in the temperature measuring direction;
the effective temperature measuring regions are obtained through common effective temperature measuring points in the invalid temperature measuring regions and common effective temperature measuring points in other temperature measuring regions, the common effective temperature measuring points are the temperature measuring points which have the same relative distance and are the effective temperature measuring points in the invalid temperature measuring regions and the other temperature measuring regions, the other temperature measuring regions are the temperature measuring regions except the invalid temperature measuring regions, and the invalid temperature measuring regions are the temperature measuring regions where the invalid temperature measuring points are located.
As shown in FIG. 2, the temperature measuring points 111 are arranged in different temperature measuring areas
The distance between the upper and leading edge lines 112 is the same, i.e.
Wherein, in the step (A),s 1,i is the first temperature measuring pointx 1,i In the arrangement direction
The distance between the upper and leading edge lines 112,s 2,i is the first temperature measuring pointx 2,i In the arrangement direction
Upper and leading edge line 112, the direction of the arrangement
Perpendicular to the direction of extension of the leading edge line 112.
As shown in figure 3 of the drawings,A 1 、A 2 andA 3 the first temperature measuring region, the second temperature measuring region and the third temperature measuring region are respectively arranged on the surface of the test model 100; first temperature measuring areaA 1 The second temperature measuring areaA 2 And a third temperature measuring regionA 3 Arranged in parallel with each other, a first temperature measuring areaA 1 Extension direction, second temperature measurement zoneA 2 And the third temperature measuring regionA 3 The extension directions are all temperature measurement directions
Direction of measurement of temperature
Disposed across a leading edge line 112 of the airfoil portion 110;
first temperature measuring areaA 1 The second temperature measuring areaA 2 And a third temperature measuring regionA 3 Respectively along the temperature measuring direction
Is sequentially provided with a first temperature measuring pointx 1,i The second temperature measuring pointx 2,i Third temperature measuring pointx 3,i . Wherein the content of the first and second substances,iis the serial number of the temperature measuring points in the same temperature measuring area,iis an integer andi=1、2、3、...、n，nthe total number of temperature measuring points in the temperature measuring area. Specifically, the total number of temperature measuring points in the temperature measuring regions is set according to the test requirements, and the total number of temperature measuring points in each temperature measuring region can be the same or different.
As shown in FIG. 4, the first temperature measurement areaA 1 Comprises a first target temperature measuring layerL 1 gAnd a first adjacent temperature measuring layerL 1a Second temperature measuring zoneA 2 Comprises a second target temperature measuring layerL 2 gAnd a second adjacent temperature measuring layerL 2a Third temperature measuring zoneA 3 Comprises a third target temperature measuring layerL 3 gAnd a third adjacent temperature measuring layerL 3a (ii) a First temperature measuring areaA 1 The second temperature measuring areaA 2 And a third temperature measuring regionA 3 Arranged in parallel with each other, a first temperature measuring areaA 1 Extension direction, second temperature measurement zoneA 2 And the third temperature measuring regionA 3 The extension directions are all temperature measurement directions
Direction of measurement of temperature
Is arranged to intersect the leading edge line 112 of the airfoil portion 110.
First target temperature measuring layerL 1 gThe first adjacent temperature measuring layerL 1a Second target temperature measuring layerL 2 gThe second adjacent temperature measuring layerL 2a Third target temperature measuring layerL 3 gA third adjacent temperature measuring layerL 3a Respectively along the temperature measuring direction
Is sequentially provided with a first temperature measuring pointx 1,i The second temperature measuring pointx 2,i Third temperature measuring pointx 3,i . Wherein the content of the first and second substances,iis the serial number of the temperature measuring points in the same temperature measuring area,iis an integer andi=1、2、3、...、n，nthe total number of temperature measuring points in the temperature measuring area. Specifically, the total number of temperature measuring points in the temperature measuring regions is set according to the test requirements, and the total number of temperature measuring points in each temperature measuring region can be the same or different.
First temperature measuring areaA 1 The temperature measuring points with odd serial numbers of the middle temperature measuring points are positioned on the first target temperature measuring layerL 1 gThat is, the temperature measuring points with odd-numbered temperature measuring points are used as target temperature measuring points, and the temperature measuring points with even-numbered temperature measuring points are positioned on the first adjacent temperature measuring layerL 1 aNamely, the temperature measuring points with the even number of the temperature measuring points are taken as the adjacent temperature measuring points; second temperature measuring areaA 2 And the third temperature measuring areaA 3 In the middle, the target temperature measuring point and the adjacent temperature measuring point can be connected with the first temperature measuring areaA 1 The corresponding relations of the serial numbers of the middle temperature measuring points are consistent. Similarly, the temperature measuring points with the even-numbered temperature measuring points can be used as target temperature measuring points, and the temperature measuring points with the odd-numbered temperature measuring points can be used as adjacent temperature measuring points.
The target temperature measuring point and the adjacent temperature measuring points are along the temperature measuring direction
In the plug-in setting, i.e. the target temperature measuring point is in the direction perpendicular to the temperature measuring direction
The upper position is positioned between two adjacent temperature measuring points, or the adjacent temperature measuring points are perpendicular to the temperature measuring direction
The upper part is positioned between two adjacent target temperature measuring points, such as adjacent temperature measuring pointsx 1,2 In the direction perpendicular to the temperature measurement
The upper position is positioned at two adjacent temperature measuring pointsx 1,1 Andx 1,3 in the meantime.
Numbering the temperature measurement areas asr(ii) a Numbering the temperature measuring points asi(ii) a Will be firstrThe first in the signal temperature measuring areaiNumber temperature measurement point is marked as
To be connected torThe first in the signal temperature measuring areaiNumber temperature measuring point
Temperature factor of
. If temperature factor
If not less than the preset parameter, judging the temperature measuring point
For the failure temperature measuring point, the failure temperature measuring point is recorded as
(ii) a If temperature factor
If the temperature is less than the preset parameter, judging the temperature measuring point
The effective temperature measuring point is recorded as
(ii) a Wherein the content of the first and second substances,r、iare all integer andr≧2、i≧2，
in order to fail the temperature measuring point,
is an effective temperature measuring point, as shown in fig. 5.
The temperature measuring area where the failure temperature measuring point is located is the failure temperature measuring area, and the failure temperature measuring area is recorded as
(ii) a Recording other temperature measuring areas except the failure temperature measuring area as
. Other temperature measuring zones
And failure temperature measurement area
The temperature measurement points which are all effective temperature measurement points are common effective temperature measurement points, and as shown in FIG. 5, when the failure temperature measurement points are failure temperature measurement pointsxb 1,i The failure temperature measurement area is the first temperature measurement areaA 1 The other temperature measuring area is the second temperature measuring areaA 2 The second temperature measuring areaA 2 And firstTemperature measuring area
The temperature measuring points of which are all effective temperature measuring points are all dividedi、iA temperature measuring point other than +1iWhen =5, i.e. the second temperature measuring zoneA 2 The common effective temperature measuring point in (1) isxe 2,i Andxb 2,i+1 outside point of temperature measurement, and first temperature measurement zoneA 1 The common effective temperature measuring point in (1) isxb 2,i Andxe 2,i+1 and (4) measuring temperature points outside.
The effective temperature measuring area is obtained by the common effective temperature measuring point in the invalid temperature measuring area and the common effective temperature measuring points in other temperature measuring areas, and the effective temperature measuring area is recorded as
，RThe serial numbers of other temperature measuring areas are shown,Ris an integer andR≠rreference temperature measurement point is recorded asxr，Reference temperature measuring pointxrIs an effective temperature measuring region
Middle and failure temperature measuring pointxb 1,i The relative distances of the two temperature measurement points are the same, such as: when the temperature measuring point failsxb 1,i Is the first temperature measuring pointx 1,i Effective temperature measuring area
Is the second temperature measuring areaA 2 The reference temperature measuring point is the second temperature measuring pointx 2,i Then the second temperature measuring point is setx 2,i As a first temperature measuring pointx 1,i The corrected temperature of (1).
Will be provided withtTime point and time temperature measuring point
Is recorded as
The temperature factor is a preset time lengthnInternal temperature value
The degree of stability of (a), wherein,tat time point, 1 ≦t≦n，nIs the final time duration.
The method has the advantages that the plurality of temperature measuring regions are arranged on the surface of the test model, the plurality of temperature measuring points are arranged in the extending direction of each temperature measuring region, and the distances between the temperature measuring points on different temperature measuring regions in the arrangement direction and the front edge line are the same, so that a precondition is provided for correcting the temperature of the failed temperature measuring point, the temperature value of the failed temperature measuring point can be corrected by the temperature values of the corresponding temperature measuring points in other temperature measuring regions except the temperature measuring region where the failed temperature measuring point is located, the working procedures of reducing the test efficiency due to repeated inspection, replacement and the like caused by a few failed temperature measuring points are avoided, the efficiency of the temperature measurement test in the junction ice is improved, and the accuracy of the test result is ensured;
whether the temperature measuring point is invalid or not is judged by judging the sizes of the temperature factor and the preset parameter, and the invalid temperature measuring point is obtained efficiently and timely, so that the temperature measuring point can be repaired, replaced, corrected and the like in the follow-up process, the problem of inaccurate temperature measurement caused by the invalid temperature measuring point is effectively avoided, and the efficiency of the anti-icing and deicing test is improved;
the temperature value of the reference temperature measuring point is used as the correction temperature of the failure temperature measuring point, and the reference temperature measuring point is the temperature measuring point with the same relative distance with the failure temperature measuring point in the effective temperature measuring area, so that the correction of the temperature value of the failure temperature measuring point is realized, the correction temperature is closer to an actual value, the efficiency of a temperature measurement test in the icing wind tunnel is improved, and the accuracy of a test result is ensured;
in the anti-icing and deicing test, the heat supply distribution of the anti-icing and deicing component is generally uniform, so that the first temperature measuring areaA 1 The second temperature measuring areaA 2 And a third temperature measuring regionA 3 The temperature values of the temperature measuring points with the same relative position can be mutually referred. Through failure in temperature measurement areaThe effective temperature measuring area is determined by the common effective temperature measuring point and the common effective temperature measuring points in other temperature measuring areas, the common effective temperature measuring point is optimized to the other temperature measuring areas, the temperature measuring area which is closer to the temperature variation trend of the invalid temperature measuring area or the temperature value of the invalid temperature measuring point is obtained as the effective temperature measuring area, the temperature of the temperature measuring point at the position corresponding to the invalid temperature measuring point in the effective temperature measuring area is used as the correction temperature of the invalid temperature measuring point, the accuracy of the correction temperature of the invalid temperature measuring point is further ensured, and the accurate measurement of the surface temperature of the anti-icing and deicing component is ensured.
Further, the temperature factor is a standard deviation or a variance of a temperature value of each temperature measuring point in a preset time period.
Temperature factor
Is calculated by the formula
Wherein, in the step (A),
and the average temperature of the ith temperature measuring point in the ith temperature measuring area within the preset time length n.
Mean temperature
The calculation formula of (2) is as follows:
。
further, the effective temperature measuring area is the temperature measuring area with the largest number of effective temperature measuring points in other temperature measuring areas.
When the temperature is measured in the first temperature measurement area, as shown in FIG. 5A 1 Failure temperature measuring point inxb 1,i When the correction is carried out, the second temperature measuring areaA 2 And a third temperature measuring regionA 3 All are other temperature measuring areas, and the effective temperature measuring area is the second temperature measuring areaA 2 And the third temperature measuring areaA 3 Middle effective temperature measuring pointxeThe largest number of temperature sensing zones, i.e. when the second temperature sensing zoneA 2 Middle effective temperature measuring pointxeIn an amount ofn-1, third temperature measurement zoneA 3 Middle effective temperature measuring pointxeIn an amount ofn2 hours, the second temperature measuring areaA 2 As an effective temperature measurement area.
Further, the effective temperature measuring area is the temperature measuring area with the minimum average temperature difference factor, the average temperature difference factor is the average value of the effective temperature difference factors, and the effective temperature difference factor is the relative stability degree of all common effective temperature measuring points in the invalid temperature measuring area and the other temperature measuring areas.
The average temperature difference factor is recorded as
Mean temperature difference factor
The minimum temperature measurement area is recorded as
. Average temperature difference factor
Minimum temperature measurement area
As an effective temperature measurement area
(ii) a Mean temperature difference factor
Is calculated by the formula
Wherein, in the step (A),
is an effective temperature difference factor. Effective temperature difference factor
For failure temperature measurement area
And the other temperature measuring areas
Relative degree of stability of all the common effective temperature measurement points. Temperature measuring area with relative stability degree of failure within same time
All the temperature values of the common effective temperature measuring points and other temperature measuring areas
The higher the discrete degree of the temperature values of all the common effective temperature measuring points and the relative stability degree, the higher the other temperature measuring areas
Temperature value or temperature change trend of each temperature measuring point and failure temperature measuring area
The closer the temperature value or the temperature change trend of each temperature point is.
Serial numbers of other temperature measuring regionsRAnd serial number of temperature measuring arearCorrespondingly, namely when other temperature measuring areas are the second temperature measuring areaA 2 When the temperature of the water is higher than the set temperature,r=2，R=2。
further, the effective temperature difference factor is a standard deviation between a temperature value of a common effective temperature measuring point in other temperature measuring areas and an average temperature value of the common effective temperature measuring point in the invalid temperature measuring area.
The effective temperature difference factor is recorded as
Effective temperature difference factor
Wherein, in the step (A),Iare serial numbers of common effective temperature measuring points,Iis an integer andI≠i，
at the time point of the common effective temperature measuring point in other temperature measuring areastThe temperature value of (a) is determined,
the average temperature of the common effective temperature measuring point in the failure temperature measuring area within the preset time length is obtained.
Average temperature of common effective temperature measuring point in failure temperature measuring area
The calculation formula of (2) is as follows:
wherein, in the step (A),
for the common effective temperature measuring point in the failure temperature measuring area at the time pointtThe temperature value of (2).
Number of common effective temperature measuring pointsIAnd serial number of temperature measuring pointiCorresponding, i.e. when the temperature measuring pointx 1,3 ，x 2,3 Respectively a failure temperature measuring layer (first temperature measuring layer)A 1 ) Middle and other temperature measuring layers (second temperature measuring zone)A 2 ) At the common temperature measuring point of the two-way temperature measuring device,i=3，Iand = 3. At this time, the average temperature
For failed temperature measuring pointx 1,3 While, when the preset time period is 30s,n=30s，t=1s, 2s, 3s,. ·, 30s, i.e.
。
When other temperature measuring layers are the second temperature measuring areaA 2 When is at timeR=2, failure temperature measurement pointx 1,3 An effective temperature difference factor of
Failure temperature measuring pointx 1,3 Average temperature difference factor of
Is calculated by the formula
Thereby obtaining other temperature measuring layers as a second temperature measuring areaA 2 Time-failure temperature measuring pointx 1,3 Average temperature difference factor of
。
Calculated in the same way, when other temperature measuring layers are the third temperature measuring areaA 3 Time-failure temperature measuring pointx 1,3 Average temperature difference factor of
Comparison of
And
. If it is
And then the third temperature measuring areaA 3 Is a mean temperature difference factor
Minimum temperature measurement area
Third temperature measuring zoneA 3 Is an effective temperature measuring region
(ii) a If it is
The second temperature measurement areaA 2 Is a mean temperature difference factor
Minimum temperature measurement area
Second temperature measuring zoneA 2 Is an effective temperature measuring region
(ii) a If it is
And then the third temperature measuring areaA 3 Or the second temperature measuring areaA 2 Is a mean temperature difference factor
Minimum temperature measurement area
Effective temperature measuring area
Is the third temperature measuring areaA 3 Or the second temperature measuring areaA 2 Is any one of the layers.
Further, when the reference temperature measuring point is an effective temperature measuring point, taking the temperature value of the reference temperature measuring point as the temperature value of the failure temperature measuring point; and when the reference temperature measuring point is the failure temperature measuring point, performing data fitting on all effective temperature measuring points in the effective temperature measuring area to obtain a temperature value of the reference temperature measuring point, and taking the temperature value of the reference temperature measuring point as the temperature value of the failure temperature measuring point.
When the temperature measuring point fails, as shown in FIG. 5xb 1,i Serial number ofiWhen =5, effective temperature measuring area
Is the second temperature measuring areaA 2 The second temperature measuring areaA 2 Middle 5 th temperature measuring pointx 2,5 As a reference temperature measuring pointxr. When referring to the temperature measuring pointxrIs an effective temperature measuring pointxe 2,5 Then the effective temperature measuring point is measuredxe 2,5 Temperature value of
As failure temperature measuring pointxb 1,i Corrected temperature of
。
Effective temperature measuring area
Is the third temperature measuring areaA 3 The third temperature measuring areaA 3 Middle 5 th temperature measuring pointx 3,5 As a reference temperature measuring pointxr. Reference temperature measuring pointxrFor failed temperature measuring pointxb 3,5 Then to the third temperature measuring areaA 3 All the effective temperature measuring points (except forxb 3,5 Andxb 3,n-2 out-of-time temperature measurement points) to perform data fitting, draw a temperature distribution curve, and use a third temperature measurement areaA 3 Obtaining the temperature of all effective temperature measuring points to obtain the regular relation of relative distance-temperature change, thereby obtaining the failure temperature measuring pointsxb 3,5 Corrected temperature of
Will fail temperature measuring pointxb 3,5 Temperature value of
As failure temperature measuring pointxb 1,i Corrected temperature of
。
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A method for correcting the surface temperature of a test model is characterized in that a plurality of temperature measuring regions are arranged on the test model along the extension direction of a leading edge line of the test model, the extension direction of the temperature measuring regions is a temperature measuring direction, a straight line where the temperature measuring direction is located is intersected with the leading edge line, each temperature measuring region is sequentially provided with a plurality of temperature measuring points along the temperature measuring direction, the distance between each temperature measuring point and the leading edge line in the arrangement direction on different temperature measuring regions is the same, and the arrangement direction is a direction perpendicular to the extension direction of the leading edge line, and the method comprises the following steps:
step S10: acquiring a temperature value of each temperature measuring point, wherein if a temperature factor of the temperature measuring point is not less than a preset parameter, the temperature measuring point is a failure temperature measuring point; if the temperature factor of the temperature measuring point is less than the preset parameter, the temperature measuring point is an effective temperature measuring point; the temperature factor is the stability of the temperature value of the temperature measuring point within a preset time length;
step S20: taking the temperature value of the reference temperature measuring point as the correction temperature of the failure temperature measuring point; the reference temperature measuring point is a temperature measuring point in an effective temperature measuring area, the relative distance between the reference temperature measuring point and the invalid temperature measuring point is the same as that between the temperature measuring point and the intersection point of a straight line where the temperature measuring direction is located and a leading edge line in the temperature measuring direction;
the effective temperature measuring regions are obtained through common effective temperature measuring points in the invalid temperature measuring regions and common effective temperature measuring points in other temperature measuring regions, the common effective temperature measuring points are the temperature measuring points which have the same relative distance and are the effective temperature measuring points in the invalid temperature measuring regions and the other temperature measuring regions, the other temperature measuring regions are the temperature measuring regions except the invalid temperature measuring regions, and the invalid temperature measuring regions are the temperature measuring regions where the invalid temperature measuring points are located.
2. The method for correcting the surface temperature of the test model according to claim 1, wherein the temperature factor is a standard deviation or a variance of the temperature value of each temperature measuring point within a preset time period.
3. The method for correcting the surface temperature of the test model according to claim 1, wherein the effective temperature measurement area is the temperature measurement area with the largest number of effective temperature measurement points in other temperature measurement areas.
4. The method for correcting the surface temperature of the test model according to claim 1, wherein the effective temperature measurement area is the temperature measurement area with the smallest average temperature difference factor, the average temperature difference factor is the average value of the effective temperature difference factors, and the effective temperature difference factor is the relative stability degree of all common effective temperature measurement points in the failed temperature measurement area and the other temperature measurement areas.
5. The method for correcting the surface temperature of the test model according to claim 4, wherein the effective temperature difference factor is a standard deviation between the temperature value of the common effective temperature measurement point in the other temperature measurement areas and the average temperature value of the common effective temperature measurement point in the failure temperature measurement area.
6. The method for correcting the surface temperature of the test model according to claim 1, wherein when the reference temperature measurement point is an effective temperature measurement point, the temperature value of the reference temperature measurement point is taken as the temperature value of the failed temperature measurement point; and when the reference temperature measuring point is the failure temperature measuring point, performing data fitting on all effective temperature measuring points in the effective temperature measuring area to obtain a temperature value of the reference temperature measuring point, and taking the temperature value of the reference temperature measuring point as the temperature value of the failure temperature measuring point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111477526.5A CN113899527B (en) | 2021-12-06 | 2021-12-06 | Method for correcting surface temperature of test model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111477526.5A CN113899527B (en) | 2021-12-06 | 2021-12-06 | Method for correcting surface temperature of test model |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113899527A CN113899527A (en) | 2022-01-07 |
| CN113899527B true CN113899527B (en) | 2022-03-01 |
Family
ID=79195368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111477526.5A Active CN113899527B (en) | 2021-12-06 | 2021-12-06 | Method for correcting surface temperature of test model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113899527B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116895039B (en) * | 2023-09-11 | 2023-11-17 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing cloud and fog pseudo particle image identification and characteristic parameter measurement method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB664029A (en) * | 1949-06-02 | 1951-01-02 | Wingfoot Corp | Radiation type thermometric device |
| JPH11223563A (en) * | 1998-02-04 | 1999-08-17 | Takenaka Komuten Co Ltd | Method for device for measuring state of environment |
| JP2001272280A (en) * | 2000-03-24 | 2001-10-05 | Fenwall Controls Of Japan Ltd | Temperature-measuring plate |
| JP2012230022A (en) * | 2011-04-27 | 2012-11-22 | Tokyo Electron Ltd | Temperature calibration device and method thereof |
| CN103674324A (en) * | 2013-10-23 | 2014-03-26 | 北京工业大学 | Melting temperature field determining and data processing system for in vitro tissue |
| CN106155171A (en) * | 2016-07-30 | 2016-11-23 | 合肥芯福传感器技术有限公司 | The bandgap voltage reference circuit that linear temperature coefficient compensates |
| CN107832494A (en) * | 2017-10-13 | 2018-03-23 | 南京航空航天大学 | Hypersonic aircraft leading edge stream thermosetting integration computational methods |
| JP2019032326A (en) * | 2017-08-09 | 2019-02-28 | 日本特殊陶業株式会社 | Temperature detection device |
| CN109661348A (en) * | 2016-08-22 | 2019-04-19 | 挪威科技大学 | Icing control system |
| CN111504595A (en) * | 2020-03-31 | 2020-08-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Surface acoustic load measuring method of high-speed train model in acoustic wind tunnel |
| CN112197932A (en) * | 2020-12-07 | 2021-01-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Surface temperature correction method and measurement method for airplane anti-icing and deicing test model |
| CN113188781A (en) * | 2021-04-25 | 2021-07-30 | 中国航发湖南动力机械研究所 | Method for correcting rotor temperature field in fatigue test of blade of aircraft engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6939036B2 (en) * | 2003-11-04 | 2005-09-06 | Certainteed Corporation | Temperature-expansion indicator for siding panels |
| JP2008304425A (en) * | 2007-06-11 | 2008-12-18 | Yokogawa Electric Corp | Temperature measurement device |
| CN109060135A (en) * | 2018-06-05 | 2018-12-21 | 哈尔滨工程大学 | A kind of radiation temperature measurement system of turbo blade and turbo blade radiative thermometric method based on reflection compensation |
| KR102634916B1 (en) * | 2019-08-29 | 2024-02-06 | 주식회사 엘지에너지솔루션 | Determining method and device of temperature estimation model, and battery management system which the temperature estimation model is applied to |
| CN111637974A (en) * | 2020-05-29 | 2020-09-08 | 深圳市康贝电子有限公司 | Non-contact temperature measuring device and temperature measuring method |
| CN111947882B (en) * | 2020-09-14 | 2024-03-29 | 中国空气动力研究与发展中心超高速空气动力研究所 | Transient heat flow sensor and test method thereof |
-
2021
- 2021-12-06 CN CN202111477526.5A patent/CN113899527B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB664029A (en) * | 1949-06-02 | 1951-01-02 | Wingfoot Corp | Radiation type thermometric device |
| JPH11223563A (en) * | 1998-02-04 | 1999-08-17 | Takenaka Komuten Co Ltd | Method for device for measuring state of environment |
| JP2001272280A (en) * | 2000-03-24 | 2001-10-05 | Fenwall Controls Of Japan Ltd | Temperature-measuring plate |
| JP2012230022A (en) * | 2011-04-27 | 2012-11-22 | Tokyo Electron Ltd | Temperature calibration device and method thereof |
| CN103674324A (en) * | 2013-10-23 | 2014-03-26 | 北京工业大学 | Melting temperature field determining and data processing system for in vitro tissue |
| CN106155171A (en) * | 2016-07-30 | 2016-11-23 | 合肥芯福传感器技术有限公司 | The bandgap voltage reference circuit that linear temperature coefficient compensates |
| CN109661348A (en) * | 2016-08-22 | 2019-04-19 | 挪威科技大学 | Icing control system |
| JP2019032326A (en) * | 2017-08-09 | 2019-02-28 | 日本特殊陶業株式会社 | Temperature detection device |
| CN107832494A (en) * | 2017-10-13 | 2018-03-23 | 南京航空航天大学 | Hypersonic aircraft leading edge stream thermosetting integration computational methods |
| CN111504595A (en) * | 2020-03-31 | 2020-08-07 | 中国空气动力研究与发展中心低速空气动力研究所 | Surface acoustic load measuring method of high-speed train model in acoustic wind tunnel |
| CN112197932A (en) * | 2020-12-07 | 2021-01-08 | 中国空气动力研究与发展中心低速空气动力研究所 | Surface temperature correction method and measurement method for airplane anti-icing and deicing test model |
| CN113188781A (en) * | 2021-04-25 | 2021-07-30 | 中国航发湖南动力机械研究所 | Method for correcting rotor temperature field in fatigue test of blade of aircraft engine |
Non-Patent Citations (3)
| Title |
|---|
| "Calibrating and evalusting reanalyses surface temperature bias by topographic correction";T Zhao, C Fu;《International Meeting on Statistical》;20070831;全文 * |
| "基于CFD的民机翼身整流罩气动外形优化方法研究";吕培培;《中国优秀硕士学位论文全文数据库 工程科技II辑》;20110715(第7（2011）期);全文 * |
| "结冰风洞热气供气系统气体温度模糊自适应PID控制";张平涛 等;《第十七届中国航空测控技术年会论文集》;20201105;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113899527A (en) | 2022-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113899527B (en) | Method for correcting surface temperature of test model | |
| EP3181452B1 (en) | System and method for aircraft ice detection within a zone of non-detection | |
| CN112197932B (en) | Surface temperature correction method and measurement method for airplane anti-icing and deicing test model | |
| RU2693340C9 (en) | System for determining the state of an air filter, particularly for internal combustion engines, a method of determining the state of an air filter, a computer-readable medium, an internal combustion engine, a ground vehicle | |
| CN113884219B (en) | Surface temperature measuring device and measuring method | |
| US7620507B2 (en) | Impedance-estimation methods, modeling methods, articles of manufacture, impedance-modeling devices, and estimated-impedance monitoring systems | |
| JP2015527589A (en) | Apparatus and method for recalibrating an exhaust gas mass flow sensor | |
| CN110059396B (en) | Aircraft flight parameter calculation method | |
| BRPI1101439A2 (en) | method for detecting degradation of the performance of a sensor in an angular flow meter; computer implemented method; and computer program product containing means of using the computer with control logic stored therein to detect degradation of sensor performance in an angular fluid flow meter | |
| CN106441472A (en) | Method for temperature drift inhibition of constant power type thermal type gas flowmeter | |
| CN113188781B (en) | Method for correcting rotor temperature field in fatigue test of blade of aircraft engine | |
| US8967858B2 (en) | Method for monitoring at least two temperature sensors of a turbomachine | |
| CN105021313B (en) | Polyethylene pressure pipe road hot-melt welding machine temperature-detecting device and method | |
| CN105209935A (en) | A radiosonde and a method for atmospheric measurements performed at an elevated temperature | |
| CN112556917B (en) | Method for measuring pressure by using pressure measuring device | |
| CN109332624A (en) | The judgement system and method for continuously cast steel plate offline inspection thermal resistance installation quality | |
| CN104596657A (en) | Gas compressor inlet/outlet temperature monitoring device and method | |
| CN112033681A (en) | Afterburner outlet temperature error correction method | |
| CN106323587B (en) | The monocular video high-precision measuring method of wing model in wind tunnel flexible deformation | |
| CN116242878A (en) | Integrated test system and method for performance of thermal protection material | |
| CN103019334A (en) | Server | |
| US10127950B1 (en) | Data storage device with moving ambient temperature sensor | |
| Bæk et al. | Experimental detection of transition on wind turbine airfoils | |
| US20090226074A1 (en) | Surface area estimation of a coating defect | |
| CN111024270B (en) | Correction method for measurement error of embedded heat flow sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |