CN208140337U - A kind of wind tunnel experiment survey refers to the device of wind speed - Google Patents
A kind of wind tunnel experiment survey refers to the device of wind speed Download PDFInfo
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- CN208140337U CN208140337U CN201820459233.1U CN201820459233U CN208140337U CN 208140337 U CN208140337 U CN 208140337U CN 201820459233 U CN201820459233 U CN 201820459233U CN 208140337 U CN208140337 U CN 208140337U
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- wind
- air velocity
- velocity transducer
- wind speed
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Abstract
The utility model provides a kind of wind tunnel experiment and surveys the device for referring to wind speed,Including wind-tunnel,Electronic computer,Data collection system,First air velocity transducer and at least one second air velocity transducer,First air velocity transducer and second air velocity transducer are detachably mounted in the wind-tunnel,And the instrument connection of first air velocity transducer is located at the first measuring point,The instrument connection of second air velocity transducer is located at the second measuring point,First air velocity transducer and second air velocity transducer are electrically connected with the data collection system respectively,The data collection system and the electronic computer communication connection,The analog signal of wind speed is transmitted to data collection system and becomes digital signal by air velocity transducer,It is then delivered to electronic computer and carries out data processing,Buildings model to be measured is put into be tested,The wind speed of the first measuring point and the reference wind speed of target structures model are directly obtained on electronic computer.
Description
Technical field
The utility model relates to wind tunnel experiment fields, and the device for referring to wind speed is surveyed more particularly to a kind of wind tunnel experiment.
Background technique
Wind tunnel experiment is widely used in the engineering practices activity such as architectural design.During wind tunnel experiment, one important
Link is exactly the measurement with reference to wind speed.Such as, when carrying out surveying pressure and force balance test, the wind pressure and building substrate tested
Power/moment values will realize nondimensionalization by reference to wind speed, and then obtain the wind force coefficient result suitable for engineering practice.
Target structures equal-height position is defined as with reference to wind speed but not by measured body and the mean wind speed of neighboring buildings interference effect.
During actual tests, often by airspeedometer be fixed on target structures diagonally forward not by building interference effect and built with target
Contour position is built, in order to avoid may be by target structures or the interference shadow of surrounding buildings at selected measurement point position
It rings, measurement point can only be selected in the position far from target structures and its neighboring buildings.However, due to static pressure gradient in tunnel body for wind
In the presence of wind field is not uniform in the distribution of contour plane.Therefore use far from the wind speed measured at tested body position as referring to
Wind speed also brings along larger test error, also, with reference to the specific feelings needed for each test model that locate of wind speed
Condition adjusts accordingly；Even for same test model, under different angle operating condition, point position is likely to need to adjust.
This brings inconvenience to testing process.
Summary of the invention
Place in view of the deficiency of the prior art facilitates operation, measurement accurate the object of the present invention is to provide a kind of
Wind tunnel experiment survey refer to wind speed device.
In order to solve the above technical problems, wind tunnel experiment survey provided by the invention includes wind-tunnel, electronics with reference to the device of wind speed
Computer, data collection system, the first air velocity transducer and at least one second air velocity transducer, first air velocity transducer
It is detachably mounted in the wind-tunnel with second air velocity transducer, and first air velocity transducer is located at first and surveys
Point, second air velocity transducer are located at the second measuring point, first air velocity transducer and second air velocity transducer difference
It is electrically connected with the data collection system, the data collection system and the electronic computer communication connection.
Optionally, the data collection system includes analog-digital converter, first air velocity transducer and second wind
Fast sensor is electrically connected with the analog-digital converter respectively, the analog-digital converter and the electronic computer communication connection.
Optionally, first air velocity transducer and second air velocity transducer are Pitot tube.
Further, the instrument connection of the first air velocity transducer is arranged at first measuring point, the second wind speed sensing
The instrument connection of device is arranged at second measuring point.
Further, first measuring point is arranged far from second measuring point.
Further, the settlement of drop target buildings model and neighboring buildings model is equipped in the wind-tunnel.
Further, the settlement is the wind-tunnel turntable of the wind-tunnel.
Further, first air velocity transducer is set to the target structures model away from windward side remotely, and described the
Two air velocity transducers are set to the top of the target structures model, and the instrument connection of second air velocity transducer is located at the target
At the top of buildings model at windward side.
Optionally, first air velocity transducer and second air velocity transducer are installed in interior at the top of the wind-tunnel
On wall.
Further, the height of first air velocity transducer and second air velocity transducer can be adjusted arbitrarily.
The beneficial effects of the utility model are as follows：
1, the first air velocity transducer is measured first first when no placement buildings model to be measured by the utility model
The wind speed for the second measuring point that the wind speed of measuring point and the second air velocity transducer measure is sent to electronics by data collection system and calculates
Machine carries out data processing to the wind speed of the first measuring point and the wind speed of the second measuring point by electronic computer and obtains the wind of the first measuring point
Relational expression between speed and the wind speed of the second measuring point is simultaneously stored in electronic computer, and is shown on electronic computer；Then
Target structures model and neighboring buildings model are put in wind-tunnel, and the second air velocity transducer is dismantled, target structures model
The position of corresponding second measuring point in roof windward side position selects wind field condition same as described above, and the first measuring point is surveyed at this time for acquisition
The wind speed obtained, the operation with the wind speed of the first measuring point Jing Guo relational expression obtains the reference wind speed of the second measuring point, in electronic computer
On directly obtain the reference wind speed of target structures model, it is easy to operate, and with reference to wind speed be it is obtained by calculation, not by periphery
The case where influence of interference, measurement is accurate, and the present apparatus has versatility, can be adapted for different building groups.The present apparatus
First air velocity transducer and the second air velocity transducer are detachable, can be mounted on different location or disassembly as needed.
2, first measuring point of the utility model is arranged far from the second measuring point, makes to put object to be measured building mould at the second measuring point
When type, the wind speed of the first measuring point is not influenced by periphery.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for not putting the device of target structures model and neighboring buildings model.
Fig. 2 is the structural schematic diagram of the device of drop target buildings model and neighboring buildings model.
Fig. 3 is the scatter plot of the utility model embodiment.
Wherein, 1, wind-tunnel；11, wind-tunnel turntable；2, electronic computer；3, the first air velocity transducer；4, the second wind speed senses
Device；5, data collection system；6, the first measuring point；7, the second measuring point；8, target structures model；9, neighboring buildings model；10, incoming flow
Wind field.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Fig. 1 to Fig. 2, it includes wind-tunnel 1, electronic computer 2, first that the wind tunnel experiment of the present embodiment, which surveys the device of wind speed,
Air velocity transducer 3, the second air velocity transducer 4 and data collection system 5, the first air velocity transducer 3 and the second air velocity transducer 4 are
It is removably mounted in wind-tunnel 1, and the first air velocity transducer 3 is arranged at the first measuring point 6, the second air velocity transducer 4 is set
It sets at the second measuring point 7, the first air velocity transducer 3 and the second air velocity transducer 4 are electrically connected with data collection system 5 respectively, number
According to acquisition system 5 and 2 communication connection of electronic computer.The data collection system of the present embodiment includes analog-digital converter, the first wind
Fast sensor 3 and the second air velocity transducer 4 are electrically connected with analog-digital converter respectively, and analog-digital converter and electronic computer 2 communicate
Connection.The settlement of drop target buildings model 8 and neighboring buildings model 9 is equipped in wind-tunnel 1, the position of the second measuring point 7 is corresponding
The roof windward side position of target structures model 8, the first measuring point 6 are arranged far from the second measuring point 7, the wind for measuring the first measuring point 6
Speed is not influenced by periphery interference.In the present embodiment, the first measuring point 6 is located at 4 meters of the front at 6 center of wind-tunnel turntable and away from wind
At the high position in 1.7 meters of bottom surface in hole 1, the second measuring point 7 is located at the surface in 11 center of circle of wind-tunnel turntable and away from the bottom surface of wind-tunnel 11
At the high position of rice.First air velocity transducer 3 and the second air velocity transducer 4 are Pitot tube, and the full pressure hole of Pitot tube is directed at air-flow
Direction, and the first air velocity transducer 3 and the second air velocity transducer 4 are installed on the inner wall at 1 top of wind-tunnel.The present embodiment selection
Be national standard Wind Loads on Buildings specification《GB 50009-2012》The corresponding wind field of middle regulation B landforms.
The experimental implementation of the present embodiment is divided into calibration experiment and test experiments.In calibration experiment, mesh is not put in wind-tunnel 1
Mark buildings model 8 and neighboring buildings model 9.First air velocity transducer 3 measures the down wind wind speed v and the second wind of the first measuring point 6
Fast sensor 4 measures the down wind wind speed u of the second measuring point 7, and sends data for the analog voltage signal of the wind speed measured and adopt
Collecting system 5 converts the signal into digital signal by data collection system 5 and is transmitted to electronic computer 2,2 pairs of electronic computer surveys
The multiple wind speed v and u obtained carry out data processing.Firstly, the incoming flow wind field 10 that choice experiment needs, in same arrives stream wind speed feelings
Multiple down wind wind speed under condition seek the down wind mean wind speed of the group by average formula, only change arrives stream wind speed, this reality
It applies example and measures down wind mean wind speed of ten group of first measuring point 6 in different arrives stream wind speeds since arrives stream wind speed is zero
V1、V2、V3…V10, similarly, the second measuring point 7 is found out with the first 6 identical arrives stream wind speed of measuring point by electronic computer 2
Down wind wind speed and every group of down wind mean wind speed U1、U2、U3…U10.Then, electronic computer 2 is on the first measuring point 6
Down wind mean wind speed V1、V2、V3…VnWith the down wind mean wind speed U on the second measuring point 71、U2、U3…UnData processing is carried out,
Obtain the relational expression between the down wind mean wind speed V of the first measuring point 6 and the down wind mean wind speed U of the second measuring point 7, this implementation
Relational expression be linear relation U=k × V, wherein k=0.558, i.e. U=0.558 × V.
Down wind mean wind speed V referring to Fig. 3, in the present embodiment, in the case of 2 pairs of electronic computer different arrives stream wind speeds1、
V2、V3…V10And down wind mean wind speed U1、U2、U3…U10Scatter plot is done, Trendline is made according to scatter plot, Trendline can be obtained
Approximate straight line seeks regression line equation according to the Trendline, obtains U=k × V, wherein and k=0.558, i.e. U=0.558 ×
V；And degree of fitting is sought, can obtain degree of fitting is 0.9995.The present apparatus is high to the accuracy for the reference wind speed for seeking the second measuring point 7.Electricity
Sub- computer 2 stores the above results, uses to following test experiments.It should be pointed out that in different wind-tunnel or different wind
Under field condition, the relational expression between the down wind mean wind speed U of the down wind mean wind speed V of the first measuring point 6 and the second measuring point 7 is
Different.
In test experiments, it is put into target structures model 8 and neighboring buildings model 9 in wind-tunnel 1, while by the second wind speed
Sensor 4 is dismantled, and does not allow the second air velocity transducer 4 to have an impact next experiment, the roof of target structures model 8 is windward
The position of corresponding second measuring point 7 in face position, starts wind-tunnel 1, selects incoming flow wind field 10 identical with above-mentioned calibration experiment, the first wind
The wind speed of the fast observation of sensor 3 at this time, and the analog voltage signal of wind speed is transmitted to data collection system 5 and is converted into digital letter
Number, it is subsequently sent to the processing of electronic computer 2, the relational expression U=0.558 that electronic computer 2 is obtained according to above-mentioned calibration experiment
× V finds out the reference wind speed of the second measuring point 7, and (i.e. target is built by the reference wind speed of the wind speed of the first measuring point 6 and the second measuring point 7
Build the reference wind speed of model 8) it is directly displayed on electronic computer 2.
It should be pointed out that the second air velocity transducer is settable multiple, the device of the present embodiment can be measured and be shown simultaneously
The reference wind speed of second air velocity transducer position.
The reference that available target structures model 8 is not influenced by neighboring buildings model 9 can be obtained in the device of the present embodiment
Wind speed, it is easy to operate, and with reference to wind speed be it is obtained by calculation, not by periphery interference and other conditions influenced, measure
Accurately.The data processing software used on the electronic computer 2 of the present embodiment can for Matlab, Excel or other according to this reality
The experimental procedure for applying example programs out the software come.
In addition, the first air velocity transducer 3 and the second air velocity transducer 4 are detachably mounted in wind-tunnel 1, it can be according to reality
The requirement tested changes position or the disassembly of the first air velocity transducer 3 and the installation of the second air velocity transducer 4.
The device that the wind tunnel experiment of the present embodiment surveys wind speed surveys the wind speed of the first measuring point 6 by the first air velocity transducer 3, the
Two air velocity transducers 4 survey the wind speed of the second measuring point 7, and send data collection system 5 for the analog signal of wind speed and be converted into counting
Word signal is sent to electronic computer 2, carries out data processing by electronic computer 2, is putting target structures model 8 and periphery is built
It after building model 9, is tested, the reference of the wind speed and target structures model 8 of the first measuring point 6 can be obtained on electronic computer 2
Wind speed, easy to operate, measurement is accurate.
It should be understood that various information are described in the utility model using term " first ", " second " etc., but these
Information should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from this
In the case where utility model range, " first " information can also be referred to as " second " information, and similar, " second " information can also be with
Referred to as " first " information.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvement and deformations can also be made, these improve and become
Shape is also considered as the protection scope of the utility model.
Claims (10)
1. a kind of wind tunnel experiment surveys the device for referring to wind speed, which is characterized in that including wind-tunnel, electronic computer, data acquisition system
System, the first air velocity transducer and at least one second air velocity transducer, first air velocity transducer and second wind speed pass
Sensor is detachably mounted in the wind-tunnel, and first air velocity transducer is located at the first measuring point, second wind speed
Sensor is located at the second measuring point, and first air velocity transducer and second air velocity transducer are acquired with the data respectively is
System electrical connection, the data collection system and the electronic computer communication connection.
2. wind tunnel experiment as described in claim 1 surveys the device for referring to wind speed, which is characterized in that the data collection system packet
Analog-digital converter is included, first air velocity transducer and second air velocity transducer are electrically connected with the analog-digital converter respectively
It connects, the analog-digital converter and the electronic computer communication connection.
3. wind tunnel experiment as described in claim 1 surveys the device for referring to wind speed, which is characterized in that first air velocity transducer
It is Pitot tube with second air velocity transducer.
4. wind tunnel experiment as described in claim 1 surveys the device for referring to wind speed, which is characterized in that the survey of the first air velocity transducer
Prospect hole is arranged at first measuring point, and the instrument connection of second air velocity transducer is arranged at second measuring point.
5. wind tunnel experiment as described in claim 1 surveys the device for referring to wind speed, which is characterized in that first measuring point is far from institute
State the setting of the second measuring point.
6. wind tunnel experiment as described in claim 1 surveys the device for referring to wind speed, which is characterized in that be equipped with and place in the wind-tunnel
The settlement of target structures model and neighboring buildings model.
7. wind tunnel experiment as claimed in claim 6 surveys the device for referring to wind speed, which is characterized in that the settlement is the wind
The wind-tunnel turntable in hole.
8. wind tunnel experiment as claimed in claim 6 surveys the device for referring to wind speed, which is characterized in that first air velocity transducer
Set on the target structures model away from windward side remotely, second air velocity transducer be set to the target structures model it is upper
Side, the instrument connection of second air velocity transducer are located at target structures model windward side roof.
9. wind tunnel experiment as described in claim 1 surveys the device for referring to wind speed, which is characterized in that first air velocity transducer
It is mounted on the inner wall at the top of the wind-tunnel with second air velocity transducer.
10. wind tunnel experiment as claimed in claim 9 surveys the device for referring to wind speed, which is characterized in that the first wind speed sensing
The height of device and second air velocity transducer can be adjusted arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820459233.1U CN208140337U (en) | 2018-04-03 | 2018-04-03 | A kind of wind tunnel experiment survey refers to the device of wind speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820459233.1U CN208140337U (en) | 2018-04-03 | 2018-04-03 | A kind of wind tunnel experiment survey refers to the device of wind speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208140337U true CN208140337U (en) | 2018-11-23 |
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ID=64291777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820459233.1U Active CN208140337U (en) | 2018-04-03 | 2018-04-03 | A kind of wind tunnel experiment survey refers to the device of wind speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208140337U (en) |
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2018
- 2018-04-03 CN CN201820459233.1U patent/CN208140337U/en active Active
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