CN105021371A - Flat model apparatus applied in wind tunnel PIV boundary layer measurement and measuring method - Google Patents
Flat model apparatus applied in wind tunnel PIV boundary layer measurement and measuring method Download PDFInfo
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- CN105021371A CN105021371A CN201510445239.4A CN201510445239A CN105021371A CN 105021371 A CN105021371 A CN 105021371A CN 201510445239 A CN201510445239 A CN 201510445239A CN 105021371 A CN105021371 A CN 105021371A
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Abstract
The invention discloses a flat model apparatus applied in wind tunnel PIV boundary layer measurement and a measuring method. The traditional measuring methods like pressure harrows and hotlines are direct measuring methods, which have interference to boundary layer flow and the accuracy of the measuring results is influenced; besides, the measuring can be done at one position a time by the methods, and multiple measurements in different positions shall be performed for understanding the development of the flat boundary layer from front to back. A flat model apparatus applied in wind tunnel PIV boundary layer measurement comprise a flat model (1); a slot is set at the middle of the flat model; a piece of optical quartz glass (3) is installed on the flat model slot; a model stand (2) is set below the flat model; the vertical plane of symmetry of the flat model and the optical quartz glass is the PIV measuring profile. The invention discloses a flat model apparatus applied in wind tunnel PIV boundary layer measurement and a measuring method.
Description
technical field:
the present invention relates to a kind of the flat plate model device and the measuring method that are applied to wind-tunnel PIV boundary layer measurement.
background technology:
for the measurement of Air Boundary Layer, the measuring method that tradition uses has pressure measurement rake, hot line etc., but these methods are owing to being direct measuring method, have interference to the flowing of boundary-layer, have impact on the accuracy of measurement result; In addition, these methods a position measurement, can only will understand flat plate boundary layer development from front to back at every turn, need the repetitive measurement carrying out diverse location, efficiency is lower, simultaneously because these measurement results are not obtain the same time, be the average result of approximate macroscopic view, make troubles to analysis; Use PIV measuring technique can obtain the velocity information of synchronization boundary-layer, but due to used a model wall light pollution problem, the measurement of PIV to boundary-layer is restricted.
summary of the invention:
the object of this invention is to provide a kind of the flat plate model device and the measuring method that are applied to wind-tunnel PIV boundary layer measurement.
above-mentioned object is realized by following technical scheme:
a kind of flat plate model device being applied to wind-tunnel PIV boundary layer measurement, its composition comprises: flat plate model, in the middle of described flat plate model, there is fluting, described flat plate model fluting is provided with optical quartz glass, have model support below described flat plate model, longitudinal plane of symmetry of described flat plate model and optical quartz glass is that PIV measures section.
the described flat plate model device being applied to wind-tunnel PIV boundary layer measurement, described flat plate model material is metal, and upper surface polishes, polishing.
the described flat plate model device being applied to wind-tunnel PIV boundary layer measurement, described optical quartz glass select 532nm Thewavelengthtransmittance close to 92% kind, two sides polishes, polishing, specular reflectance 8%.
the described flat plate model device being applied to wind-tunnel PIV boundary layer measurement, described optical quartz glass is arranged on flat plate model, and optical quartz glass is concordant with flat plate model upper surface, and seam crossing uses plasticine excessively smooth.
the described flat plate model device being applied to wind-tunnel PIV boundary layer measurement, described flat plate model front and rear edges has corner cut, and corner cut angle is 30 °.
the described measuring method being applied to the flat plate model device of wind-tunnel PIV boundary layer measurement, its concrete steps are: flat plate model uses support to be supported in wind-tunnel center by (1), place laser instrument, optical mirror slip group, CCD camera etc. in corresponding position; (2) wind-tunnel is opened; (3) laser beam utilizing laser instrument to launch forms laser sheet optical and is irradiated on flat plate model device after lens set, taken a picture in the laser sheet optical district on wind-tunnel middle plateform model top, the image produced is analyzed, utilize optical quartz glass to the light transmission of 532nm wavelength close to 92%, specular reflectance is close to 8%, make laser instrument send the light wave of 532nm wavelength without diffuse reflection phenomenon, solve the problem of the light pollution of wall well; Described flat plate model utilizes the corner cut of leading edge and trailing edge, for the impact preventing upper surface air-flow to be subject to dull and stereotyped front end face; Middle fluting, for installing optical quartz glass, the longitudinal plane of symmetry of optical quartz glass is that flat plate boundary layer measures section, utilize optical quartz glass to the light transmission of 532nm wavelength close to 92%, optical quartz glass two sides is polished, cuts open light, makes the reflectivity of optical quartz glass to light reach 8%; Optical quartz glass is arranged on metal plate, and install rear plate model upper surface without step, optical quartz glass is excessively smooth with metal plate seam crossing plasticine, is ensure surface smoothness, abutment joint polishing after plasticine solidifies; Flat plate model uses support to be supported in wind-tunnel center, makes the flow field quality of model boundary layer measurement section best; As measured turbulent boundary layer, can turn at flat plate model front edge bonding and twist band or satellite line, forced draft turns twists.
beneficial effect of the present invention:
1. the present invention solves according to the transmission of light and mirror-reflection principle the light pollution problem that flat plate boundary layer PIV tests near wall, makes wind tunnel test middle plateform boundary-layer be able to Measurement accuracy.
pIV boundary layer measurement of the present invention belongs to indirect inspection, disturbs less, and the disposable data obtaining a plane or an individuality of energy, efficiency is high.
the invention solves the measurement problem of boundary-layer, vital effect is played to the flow mechanism understanding laminar flow and turbulent boundary layer, physical model can be provided for aerodynamic numerical simulation.
accompanying drawing illustrates:
accompanying drawing 1 is structure schematic top plan view of the present invention.
accompanying drawing 2 is structure cross-sectional schematic of the present invention.
accompanying drawing 3 is that structure of the present invention analyses and observe enlarged diagram.
embodiment:
embodiment 1:
a kind of flat plate model device being applied to wind-tunnel PIV boundary layer measurement, its composition comprises: flat plate model 1, in the middle of described flat plate model, there is fluting, described flat plate model fluting is provided with optical quartz glass 3, have model support 2 below described flat plate model, longitudinal plane of symmetry of described flat plate model and optical quartz glass is that PIV measures section 4.
embodiment 2:
the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to embodiment 1, described flat plate model material is metal, and upper surface polishes, polishing.
embodiment 3:
the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to embodiment 1, described optical quartz glass select 532nm Thewavelengthtransmittance close to 92% kind, two sides polishes, polishing, minute surface emissivity 8%.
embodiment 4:
the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to embodiment 1, described optical quartz glass is arranged on flat plate model, and optical quartz glass is concordant with flat plate model upper surface, and seam crossing uses plasticine excessively smooth.
embodiment 5:
the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to embodiment 1, described flat plate model front and rear edges has corner cut, and corner cut angle is 30 °.
embodiment 6:
the measuring method being applied to the flat plate model device of wind-tunnel PIV boundary layer measurement according to embodiment 1 or 2 or 3 or 4 or 5, its concrete steps are: flat plate model uses support to be supported in wind-tunnel center by (1), place laser instrument, optical mirror slip group, CCD camera etc. in corresponding position; (2) wind-tunnel is opened; (3) laser beam utilizing laser instrument to launch forms laser sheet optical and is irradiated on flat plate model device after lens set, taken a picture in the laser sheet optical district on wind-tunnel middle plateform model top, the image produced is analyzed, utilize optical quartz glass to the light transmission of 532nm wavelength close to 92%, specular reflectance is close to 8%, make laser instrument send the light wave of 532nm wavelength without diffuse reflection phenomenon, solve the problem of the light pollution of wall well; Described flat plate model utilizes the corner cut of leading edge and trailing edge, for the impact preventing upper surface air-flow to be subject to dull and stereotyped front end face; Middle fluting, for installing optical quartz glass, the longitudinal plane of symmetry of optical quartz glass is that flat plate boundary layer measures section, utilize optical quartz glass to the light transmission of 532nm wavelength close to 92%, optical quartz glass two sides is polished, cuts open light, makes the reflectivity of optical quartz glass to light reach 8%; Optical quartz glass is arranged on metal plate, and install rear plate model upper surface without step, optical quartz glass is excessively smooth with metal plate seam crossing plasticine, is ensure surface smoothness, abutment joint polishing after plasticine solidifies; Flat plate model uses support to be supported in wind-tunnel center, makes the flow field quality of model boundary layer measurement section best; As measured turbulent boundary layer, can turn at flat plate model front edge bonding and twist band or satellite line, forced draft turns twists.
Claims (6)
1. one kind is applied to the flat plate model device of wind-tunnel PIV boundary layer measurement, its composition comprises: flat plate model, it is characterized in that: in the middle of described flat plate model, there is fluting, described flat plate model fluting is provided with optical quartz glass, have model support below described flat plate model, longitudinal plane of symmetry of described flat plate model and optical quartz glass is that PIV measures section.
2. the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to claim 1, is characterized in that: described flat plate model material is metal, and upper surface polishes, polishing.
3. the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to claim 1 and 2, is characterized in that: described optical quartz glass select 532nm Thewavelengthtransmittance close to 92% kind, two sides polishes, polishing, specular reflectance 8%.
4. the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to claim 1 or 2 or 3, it is characterized in that: described optical quartz glass is arranged on flat plate model, optical quartz glass is concordant with flat plate model upper surface, and seam crossing uses plasticine to smoothly transit.
5. the flat plate model device being applied to wind-tunnel PIV boundary layer measurement according to claim 1 or 2 or 3 or 4, it is characterized in that: described flat plate model front and rear edges has corner cut, corner cut angle is 30 °.
6. one kind utilizes claim 1 or the measuring method being applied to the flat plate model device of wind-tunnel PIV boundary layer measurement described in 2 or 3 or 4 or 5, it is characterized in that: flat plate model uses support to be supported in wind-tunnel center by (1), place laser instrument, optical mirror slip group, CCD camera etc. in corresponding position; (2) wind-tunnel is opened; (3) laser beam utilizing laser instrument to launch forms laser sheet optical and is irradiated on flat plate model device after lens set, taken a picture in the laser sheet optical district on wind-tunnel middle plateform model top, the image produced is analyzed, utilize optical quartz glass to the light transmission of 532nm wavelength close to 92%, specular reflectance is close to 8%, make laser instrument send the light wave of 532nm wavelength without diffuse reflection phenomenon, solve the problem of the light pollution of wall well; Described flat plate model utilizes the corner cut of leading edge and trailing edge, for the impact preventing upper surface air-flow to be subject to dull and stereotyped front end face; Middle fluting, for installing optical quartz glass, the longitudinal plane of symmetry of optical quartz glass is that flat plate boundary layer measures section, utilize optical quartz glass to the light transmission of 532nm wavelength close to 92%, optical quartz glass two sides is polished, cuts open light, makes the reflectivity of optical quartz glass to light reach 8%; Optical quartz glass is arranged on metal plate, and install rear plate model upper surface without step, optical quartz glass is excessively smooth with metal plate seam crossing plasticine, is ensure surface smoothness, abutment joint polishing after plasticine solidifies; Flat plate model uses support to be supported in wind-tunnel center, makes the flow field quality of model boundary layer measurement section best; As measured turbulent boundary layer, can turn at flat plate model front edge bonding and twist band or satellite line, forced draft turns twists.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885685A (en) * | 2017-04-06 | 2017-06-23 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of dual airfoil test model for flow transition detection |
| CN109186923A (en) * | 2018-11-19 | 2019-01-11 | 温州大学瓯江学院 | A kind of device for wind-tunnel detection plate wind resistance |
| CN110920869A (en) * | 2019-07-16 | 2020-03-27 | 中国人民解放军空军工程大学 | High-frequency array type combined arc discharge exciter and method for controlling interference instability of shock wave boundary layer |
| CN111413062A (en) * | 2020-04-17 | 2020-07-14 | 中国空气动力研究与发展中心低速空气动力研究所 | High-speed train model wind tunnel test roadbed and control method of surface boundary layer of roadbed |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175422A (en) * | 2011-03-11 | 2011-09-07 | 中国科学院电工研究所 | Pitching direction-rotating heliostat model for wind tunnel test |
| CN103471808A (en) * | 2013-09-12 | 2013-12-25 | 中国科学院工程热物理研究所 | Plasma flow visualization device based on dielectric barrier discharge principle |
| CN104236844A (en) * | 2014-09-17 | 2014-12-24 | 东方电气(广州)重型机器有限公司 | High-flow air fluid testing system for nuclear power plant MSR |
| CN204788889U (en) * | 2015-07-27 | 2015-11-18 | 中国航空工业集团公司哈尔滨空气动力研究所 | Be applied to dull and stereotyped model device of wind -tunnel PIV boundary layer measuring |
-
2015
- 2015-07-27 CN CN201510445239.4A patent/CN105021371A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175422A (en) * | 2011-03-11 | 2011-09-07 | 中国科学院电工研究所 | Pitching direction-rotating heliostat model for wind tunnel test |
| CN103471808A (en) * | 2013-09-12 | 2013-12-25 | 中国科学院工程热物理研究所 | Plasma flow visualization device based on dielectric barrier discharge principle |
| CN104236844A (en) * | 2014-09-17 | 2014-12-24 | 东方电气(广州)重型机器有限公司 | High-flow air fluid testing system for nuclear power plant MSR |
| CN204788889U (en) * | 2015-07-27 | 2015-11-18 | 中国航空工业集团公司哈尔滨空气动力研究所 | Be applied to dull and stereotyped model device of wind -tunnel PIV boundary layer measuring |
Non-Patent Citations (2)
| Title |
|---|
| 沈自才 等: "《抗辐射涉及与辐射效应》", 31 May 2015, 中国科学技术出版社 * |
| 王博: "基于微型涡流发生器的激波/边界层干扰控制研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885685A (en) * | 2017-04-06 | 2017-06-23 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of dual airfoil test model for flow transition detection |
| CN106885685B (en) * | 2017-04-06 | 2019-03-01 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of dual airfoil test model for flow transition detection |
| CN109186923A (en) * | 2018-11-19 | 2019-01-11 | 温州大学瓯江学院 | A kind of device for wind-tunnel detection plate wind resistance |
| CN110920869A (en) * | 2019-07-16 | 2020-03-27 | 中国人民解放军空军工程大学 | High-frequency array type combined arc discharge exciter and method for controlling interference instability of shock wave boundary layer |
| CN111413062A (en) * | 2020-04-17 | 2020-07-14 | 中国空气动力研究与发展中心低速空气动力研究所 | High-speed train model wind tunnel test roadbed and control method of surface boundary layer of roadbed |
| CN111413062B (en) * | 2020-04-17 | 2022-02-01 | 中国空气动力研究与发展中心低速空气动力研究所 | High-speed train model wind tunnel test roadbed and control method of surface boundary layer of roadbed |
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