CN110319999A - Carry out the system and method for turbulent flow screen honeycomb PIV optical test based on cascade wind tunnel - Google Patents
Carry out the system and method for turbulent flow screen honeycomb PIV optical test based on cascade wind tunnel Download PDFInfo
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- CN110319999A CN110319999A CN201910701863.4A CN201910701863A CN110319999A CN 110319999 A CN110319999 A CN 110319999A CN 201910701863 A CN201910701863 A CN 201910701863A CN 110319999 A CN110319999 A CN 110319999A
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- testpieces
- turbulent flow
- casing
- honeycomb
- flow screen
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- 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
- G01M9/02—Wind tunnels
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/18—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance
- G01P5/20—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the time taken to traverse a fixed distance using particles entrained by a fluid stream
Abstract
This application involves a kind of systems for carrying out the PIV optical test of turbulent flow screen honeycomb based on cascade wind tunnel, and system includes: turbulent flow screen honeycomb testpieces；Turbulent flow screen honeycomb testpieces casing component, turbulent flow screen honeycomb testpieces casing component is for carrying turbulent flow screen honeycomb testpieces；Cascade wind tunnel exerciser, cascade wind tunnel exerciser is used to generate the air flow rate by turbulent flow screen honeycomb testpieces, and carrying turbulent flow screen honeycomb testpieces casing component to change the flow direction of air-flow and turbulent flow screen honeycomb testpieces by turbulent flow screen honeycomb testpieces；And PIV optic testing system, PIV optic testing system is for generating laser sheet optical to measure the air-flow by turbulent flow screen honeycomb testpieces, to obtain the velocity field of the air-flow by turbulent flow screen honeycomb testpieces.The system that the application proposes can utilize velocity field and turbulivity field distribution after PIV optical testing technology measurement turbulent flow screen honeycomb.
Description
Technical field
The application belongs to aircraft engine acoustic experimental technique field, in particular to a kind of to carry out turbulent flow based on cascade wind tunnel
Shield the system and method for honeycomb PIV optical test.
Background technique
As shown in Figure 1, turbulent flow screen 1 is to carry out the outdoor test of aero-engine to set with the important of compressor part acoustic experiment
It is standby, it is to be spliced by module unit bodies 2 up to a hundred, cell cube 2 is made of perforated plate and turbulent flow screen honeycomb 3, wherein turbulent flow screen bee
Nest 3 has conclusive effect to the aeroperformance of turbulent flow screen 1.Therefore it needs to obtain turbulent flow screen honeycomb 3 by research technique
Aeroperformance (such as velocity field, pressure field, turbulivity).
Contact and contactless, contact can be generally divided into the test method of the aeroperformance of turbulent flow screen honeycomb 3
For formula mainly based on stable state and dynamic probe, difficulty of test is small, can obtain steady/dynamic pressure, VELOCITY DISTRIBUTION, but contact
Measurement can interfere air velocity distribution, and be single-spot testing technology, and testing efficiency is lower.Non-contact measurement is mainly surveyed with particle picture
Fast method (Particle Image Velocimetry, PIV) is the optical testing technology of representative, test effect high with frequency response
The features such as rate is high, test result spatial resolution is high, can test and obtain velocity field and turbulivity field distribution, and PIV technology
For non-contact measurement, tested flow field will not be interfered.
Summary of the invention
The purpose of the application there is provided it is a kind of based on cascade wind tunnel carry out the PIV optical test of turbulent flow screen honeycomb system and
Method, for solve the problems, such as or mitigate it is in the prior art at least one.
On the one hand, this application provides it is a kind of based on cascade wind tunnel carry out the PIV optical test of turbulent flow screen honeycomb system,
The system comprises
Turbulent flow screen honeycomb testpieces；
Turbulent flow screen honeycomb testpieces casing component, the turbulent flow screen honeycomb testpieces casing component is for carrying the turbulent flow
Shield honeycomb testpieces；
Cascade wind tunnel exerciser, the cascade wind tunnel exerciser are tried for generating by the turbulent flow screen honeycomb
The air flow rate of part is tested, and the carrying turbulent flow screen honeycomb testpieces casing component is tested to change by the turbulent flow screen honeycomb
The air-flow of part and the flow direction of turbulent flow screen honeycomb testpieces；And
PIV optic testing system, the PIV optic testing system is for generating laser sheet optical to measure through turbulent flow screen bee
The air-flow of nest testpieces, to obtain the velocity field of the air-flow by turbulent flow screen honeycomb testpieces.
In this application, the cascade wind tunnel exerciser includes wind tunnel spout upper wall and the wind tunnel spout upper wall
Wind tunnel spout lower wall, support base and the turntable being relatively rotatable to each other with the support base being oppositely arranged have on the turntable
Testpieces mounting groove, for fixing turbulent flow screen honeycomb testpieces.
In this application, the wind tunnel spout upper wall and the wind tunnel spout lower wall symmetrical shape.
In this application, the turbulent flow screen honeycomb testpieces casing component include casing upper wall, with the casing upper wall phase
To the casing lower wall of setting, casing right wall and the casing left wall being oppositely arranged with the casing right wall, the casing upper wall, casing
Lower wall, casing right wall and casing left wall are relatively fixed around the space that can accommodate the turbulent flow screen honeycomb testpieces out.
In this application, the casing upper wall, casing lower wall, casing right wall and casing left wall are transparent material support.
In this application, the casing upper wall, casing lower wall, casing right wall and casing left wall are fixed by cementation method.
In this application, the PIV optic testing system includes being arranged in the casing upper wall or casing lower wall either side
PIV laser, be arranged in the casing right wall or casing left wall either side PIV camera and be arranged in the casing upper wall
PIV laser light-piece between casing lower wall.
In this application, the PIV optic testing system further includes PIV equipment data acquisition analyzing, and the PIV data are adopted
Set analysis device is for controlling and/or recording the PIV laser and the PIV camera.
On the other hand, this application provides a kind of sides for carrying out the PIV optical test of turbulent flow screen honeycomb based on cascade wind tunnel
Method uses as above any system, and the system is installed, which comprises
Continue laser sheet optical in from casing upper wall or casing lower wall vertical irradiation into turbulent flow screen honeycomb testpieces, and obtains
Through the flow field of the laser sheet optical of casing left wall or casing right wall；
The flow control valve of wind-tunnel upstream is adjusted to change the air flow rate for flowing through turbulent flow screen honeycomb testpieces, thus
Adjust the air-flow velocity for passing through turbulent flow screen；
Turntable is rotated to required angle, is tried with changing the air-flow for flowing through turbulent flow screen honeycomb testpieces and turbulent flow screen honeycomb
Test the angle between part；
The determining velocity field for passing through turbulent flow screen honeycomb testpieces in the flow field is obtained according to lasting.
The application is proposed based on the wind-tunnel for carrying out the blowing of turbomachine plane cascade for carrying out turbulent flow screen honeycomb
The system and method for PIV optical test utilize velocity field and rapids after PIV optical testing technology measurement turbulent flow screen honeycomb to realize
Mobility field distribution.
Detailed description of the invention
In order to illustrate more clearly of technical solution provided by the present application, attached drawing will be briefly described below.It is aobvious and easy
Insight, drawings discussed below are only some embodiments of the present application.
Fig. 1 is the turbulent flow screen structural schematic diagram of the prior art.
Fig. 2 is the plane cascade test device structural schematic diagram in the application.
Fig. 3 is the turbulent flow screen honeycomb testpieces casing component structure diagram in the application.
Fig. 4 is turbulent flow screen honeycomb testpieces and turbulent flow screen honeycomb testpieces casing component scheme of installation in the application.
Fig. 5 is the turbulent flow screen honeycomb PIV optic testing system scheme schematic diagram in the application.
Fig. 6 is the turbulent flow screen honeycomb PIV optic test result schematic diagram of this embodiment.
Fig. 7 is the change air-flow and turbulent flow screen honeycomb testpieces angle schematic diagram of the application.
Appended drawing reference:
1 is turbulent flow screen
2 be cell cube
3 be turbulent flow screen honeycomb
10 be cascade wind tunnel exerciser
11 be wind tunnel spout upper wall
12 be wind tunnel spout lower wall
13 be turntable
14 be support base
15 be testpieces mounting groove
16 be air-flow direction of flow
17 be turntable rotation direction.
20 be turbulent flow screen honeycomb testpieces casing component
21 be casing upper wall
22 be casing lower wall
23 be casing right wall
24 be casing left wall
25 install card slot for honeycomb
26 install bolt hole for testpieces
27 be honeycomb fixing bolt
30 be turbulent flow screen honeycomb testpieces
40 be PIV optic testing system
41 be PIV laser
42 be PIV camera
43 be PIV laser sheet optical
44 be PIV equipment data acquisition analyzing
Specific embodiment
To keep the purposes, technical schemes and advantages of the application implementation clearer, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application is further described in more detail.
The application proposes that one kind is adapted to cascade wind tunnel test based on the wind-tunnel for carrying out the blowing of turbomachine plane cascade
The system and method for the PIV optical test of the turbulent flow screen honeycomb testpieces of device.
System includes: turbulent flow screen honeycomb testpieces 30；Turbulent flow screen honeycomb testpieces casing component 20, the test of turbulent flow screen honeycomb
Part casing component 20 is for carrying turbulent flow screen honeycomb testpieces 30；Cascade wind tunnel exerciser 10, cascade wind tunnel test
Device 10 is used to generate the air flow rate by turbulent flow screen honeycomb testpieces 30, and carrying turbulent flow screen honeycomb testpieces casing component 20
To change the flow direction of air-flow and turbulent flow screen honeycomb testpieces 30 by turbulent flow screen honeycomb testpieces 30；And PIV optic test
System 40, PIV optic testing system 40 for generating laser sheet optical to measure the air-flow by turbulent flow screen honeycomb testpieces 30, with
Obtain the velocity field of the air-flow by turbulent flow screen honeycomb testpieces 30.
It is illustrated in figure 2 the plane cascade test device 10 of turbine, it includes on wind tunnel spout upper wall 11 and wind tunnel spout
Wind tunnel spout lower wall 12, support base 14 and the turntable 13 being relatively rotatable to each other with support base 14 that wall 11 is oppositely arranged, turntable 13
Upper to have testpieces mounting groove 15, turbulent flow screen honeycomb testpieces 30 is fixed in the testpieces mounting groove 15 on turntable 13.Its turn
The left side plate of disk 13 can be rotated along the center of circle, testpieces rotation be driven, to change direction of the air-flow relative to testpieces.
It is illustrated in figure 3 20 schematic diagram of turbulent flow screen honeycomb testpieces casing component, turbulent flow screen honeycomb testpieces casing component
20 include casing upper wall 21, the casing lower wall 22 being oppositely arranged with casing upper wall 21, casing right wall 23 and with 23 phase of casing right wall
To the casing left wall 24 of setting, casing upper wall 21, casing lower wall 22, casing right wall 23 and casing left wall 24 are relatively fixed to surround
The space of turbulent flow screen honeycomb testpieces 30 can be accommodated out, turbulent flow screen honeycomb testpieces 30 is mounted in honeycomb installation card slot 25,
Honeycomb fixing bolt 27 passes through testpieces installation bolt hole 26, and turbulent flow screen honeycomb testpieces 30 is fixed.
The turbulent flow screen honeycomb testpieces casing component 20 of the application is on the whole transparent material, when meeting PIV optic test
Irradiate the demand of laser and Image Acquisition.In some embodiments, above-mentioned material is that organic glass is made.
In conjunction with Fig. 3 and Fig. 4, in the turbulent flow screen honeycomb testpieces casing component 20 of the application, casing includes upper and lower, left and right
Wall is bonded by silica gel, forms internal flow path required for testing, simultaneously because meeting the survey of PIV optics using transparent material
The demand of laser and Image Acquisition is irradiated when examination.Honeycomb installs card slot 25 through casing or so wall, for installing turbulent flow screen bee
Nest testpieces 30.Honeycomb fixing bolt 27 is located at the surface of honeycomb installation card slot 25, casing upper wall 21 is passed through, by turbulent flow screen bee
Nest testpieces 30 is fixed in honeycomb installation card slot 25.Testpieces is installed testpieces on bolt hole 26 and cascade wind tunnel and is installed
Bolt hole docking on slot 15, for fixing turbulent flow screen honeycomb testpieces 30.Turbulent flow screen honeycomb testpieces 30 is by turbulent flow screen unit
Body is cut into rectangular block, is mounted in the honeycomb installation card slot 25 of turbulent flow screen honeycomb testpieces casing component 20.
As shown in figure 5, PIV optic testing system 40 includes that 22 either side of casing upper wall 21 or casing lower wall is arranged in
PIV laser 41, the PIV camera 42 that 24 either side of casing right wall 23 or casing left wall is arranged in and setting are in casing upper wall 21
PIV laser light-piece between casing lower wall 22.Since the flow field change after turbulent flow screen honeycomb testpieces 30 is predominantly along stream
To pulsation decaying, therefore using one camera two dimensional PIV measurement can meet testing requirement.In the present embodiment, PIV swashs
Light device 41 is arranged in casing upper wall 21, and the outside of casing right wall 23 is arranged in PIV camera 42.Turbulent flow screen honeycomb testpieces 30 is installed
In the testpieces mounting groove of plane cascade test device 10, upper wall of the laser sheet optical required for PIV is tested from testpieces casing
Face vertical irradiation is into testpieces, and the camera of Image Acquisition penetrates the flow field of casing side wall recording laser piece light, using in application
PIV optic testing system can get velocity field as shown in FIG. 6.
Finally, this application provides the method for carrying out the PIV optical test of turbulent flow screen honeycomb based on cascade wind tunnel, method is used
System as above after the installation is completed by system using the present processes, specifically includes:
Continue laser sheet optical in from casing upper wall or casing lower wall vertical irradiation into turbulent flow screen honeycomb testpieces, and obtains
Through the flow field of the laser sheet optical of casing left wall or casing right wall；
The flow control valve of wind-tunnel upstream is adjusted to change the air flow rate for flowing through turbulent flow screen honeycomb testpieces, thus
Adjust the air-flow velocity for passing through turbulent flow screen；
Turntable is rotated to required angle, is tried with changing the air-flow for flowing through turbulent flow screen honeycomb testpieces and turbulent flow screen honeycomb
Test the angle between part；
The velocity field for passing through turbulent flow screen honeycomb testpieces is determined according to lasting acquisition flow field.
Due to needing to be changed operating condition of test when carrying out the test of turbulent flow screen honeycomb, the operating condition for needing to adjust includes two
Factor, is on the one hand the flow velocity of air-flow, second be air-flow relative turbulent screen it is cellular come flow angle therefore change in the application
Air-flow velocity is the regulatory function using cascade wind tunnel to the speed of air-flow, can pass through with adjusting wind-tunnel upstream flow
Regulating valve, changes the flow of air-flow, to adjust the air-flow velocity by turbulent flow screen；Changing air-flow angle is by turbulent flow screen honeycomb
Testpieces is fixed in the mounting groove on plane cascade test device turntable, when needing to change the angle between air-flow and honeycomb,
Rotate exerciser turntable to required angle, as shown in Figure 7.
The application is proposed based on the wind-tunnel for carrying out the blowing of turbomachine plane cascade for carrying out turbulent flow screen honeycomb
The system and method for PIV optical test utilize velocity field and rapids after PIV optical testing technology measurement turbulent flow screen honeycomb to realize
Mobility field distribution.
More than, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and it is any to be familiar with
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by those skilled in the art, should all cover
Within the scope of protection of this application.Therefore, the protection scope of the application should be based on the protection scope of the described claims.
Claims (9)
1. a kind of system for carrying out the PIV optical test of turbulent flow screen honeycomb based on cascade wind tunnel, which is characterized in that the system comprises
Turbulent flow screen honeycomb testpieces (30)；
Turbulent flow screen honeycomb testpieces casing component (20), the turbulent flow screen honeycomb testpieces casing component (20) are described for carrying
Turbulent flow screen honeycomb testpieces (30)；
Cascade wind tunnel exerciser (10), the cascade wind tunnel exerciser (10) pass through the turbulent flow screen bee for generating
The air flow rate of nest testpieces (30), and the carrying turbulent flow screen honeycomb testpieces casing component (20) pass through the rapids to change
The air-flow of stream screen honeycomb testpieces (30) and the flow direction of turbulent flow screen honeycomb testpieces (30)；And
PIV optic testing system (40), the PIV optic testing system (40) pass through turbulent flow for generating laser sheet optical to measure
Shield the air-flow of honeycomb testpieces (30), to obtain the velocity field of the air-flow by turbulent flow screen honeycomb testpieces (30).
2. the system as claimed in claim 1, which is characterized in that the cascade wind tunnel exerciser (10) includes wind tunnel spout
Upper wall (11), the wind tunnel spout lower wall (12) being oppositely arranged with the wind tunnel spout upper wall (11), support base (14) and with it is described
The turntable (13) that support base (14) is relatively rotatable to each other has testpieces mounting groove (15) on the turntable (13), for fixing
Turbulent flow screen honeycomb testpieces (30).
3. system as claimed in claim 2, which is characterized in that the wind tunnel spout upper wall (11) and the wind tunnel spout lower wall
(12) symmetrical shape.
4. the system as claimed in claim 1, which is characterized in that the turbulent flow screen honeycomb testpieces casing component (20) includes machine
Casket upper wall (21), the casing lower wall (22) being oppositely arranged with the casing upper wall (21), casing right wall (23) and with the casing
The casing left wall (24) that right wall (23) is oppositely arranged, the casing upper wall (21), casing lower wall (22), casing right wall (23) and machine
Casket left wall (24) is relatively fixed around the space that can accommodate the turbulent flow screen honeycomb testpieces (30) out.
5. system as claimed in claim 4, which is characterized in that the casing upper wall (21), casing lower wall (22), casing right wall
(23) and casing left wall (24) is transparent material support.
6. system as described in claim 4 or 5, which is characterized in that the casing upper wall (21), casing lower wall (22), casing
Right wall (23) and casing left wall (24) are fixed by cementation method.
7. the system as claimed in claim 1, which is characterized in that the PIV optic testing system (40) includes being arranged described
The PIV laser (41) of casing upper wall (21) or casing lower wall (22) either side is arranged in the casing right wall (23) or casing
The PIV camera (42) of left wall (24) either side and the PIV being arranged between the casing upper wall (21) and casing lower wall (22)
Laser light-piece.
8. system as claimed in claim 7, which is characterized in that the PIV optic testing system (40) further includes that PIV data are adopted
Set analysis device (44), the PIV equipment data acquisition analyzing (44) is for controlling and/or recording the PIV laser (41)
With the PIV camera (42).
9. a kind of method for carrying out the PIV optical test of turbulent flow screen honeycomb based on cascade wind tunnel, which is characterized in that wanted using such as right
1 to 8 any system is sought, and the system is installed, the method includes
Continue laser sheet optical in from casing upper wall or casing lower wall vertical irradiation into turbulent flow screen honeycomb testpieces, and obtains transmission
The flow field of the laser sheet optical of casing left wall or casing right wall；
The flow control valve of wind-tunnel upstream is adjusted to change the air flow rate for flowing through turbulent flow screen honeycomb testpieces, to adjust
By the air-flow velocity of turbulent flow screen；
Turntable is rotated to required angle, to change the air-flow and turbulent flow screen honeycomb testpieces that flow through turbulent flow screen honeycomb testpieces
Between angle；
The determining velocity field for passing through turbulent flow screen honeycomb testpieces in the flow field is obtained according to lasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701863.4A CN110319999B (en) | 2019-07-31 | 2019-07-31 | System and method for developing turbulence screen honeycomb PIV optical test based on cascade wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701863.4A CN110319999B (en) | 2019-07-31 | 2019-07-31 | System and method for developing turbulence screen honeycomb PIV optical test based on cascade wind tunnel |
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| Publication Number | Publication Date |
|---|---|
| CN110319999A true CN110319999A (en) | 2019-10-11 |
| CN110319999B CN110319999B (en) | 2021-05-25 |
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ID=68125137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910701863.4A Active CN110319999B (en) | 2019-07-31 | 2019-07-31 | System and method for developing turbulence screen honeycomb PIV optical test based on cascade wind tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112964472A (en) * | 2021-03-23 | 2021-06-15 | 中国空气动力研究与发展中心空天技术研究所 | Stabilizing section for plane blade grid high-altitude flow simulation device |
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| WO2011125767A1 (en) * | 2010-03-31 | 2011-10-13 | 日本碍子株式会社 | Honeycomb filter |
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| CN110319999B (en) | 2021-05-25 |
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