CN207036386U - A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry - Google Patents
A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry Download PDFInfo
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- CN207036386U CN207036386U CN201720883578.5U CN201720883578U CN207036386U CN 207036386 U CN207036386 U CN 207036386U CN 201720883578 U CN201720883578 U CN 201720883578U CN 207036386 U CN207036386 U CN 207036386U
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Abstract
A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry, it is characterised in that：Cfentrifugal blower, group section, smog including being linked in sequence blend section, honeycomb, steady flow segment, broken whirlpool net, experimental section, exhaust section.It is additionally provided with CCD camera and laser.Cfentrifugal blower supplies source of the gas, air-flow enters steady flow segment and experimental section after smog blending section mixes with the smog from aerosol producer after group section by honeycomb and broken whirlpool net, after air velocity distribution using particle image speed-measuring system measurement experiment section, air-flow is arranged after exhaust section isolation of purified to outdoor.It can both be used as the small-sized low speed experimental bench of experimental teaching, simple and convenient safe practical operation is carried out to Particle Image Velocimetry, as class demonstration, the wind tunnel experiment in high-precision low speed flow field can be met again, the two and three dimensions velocity field to be measured for testing flow field can be obtained.With experimental cost is low, measurement accuracy is high, operating method is simple, is widely used, it is environment friendly and pollution-free the advantages of.
Description
Technical field
It the utility model is related to a kind of wind tunnel experiment platform.
Background technology
Particle Image Velocimetry breaches the limitation of space spot measurement, realizes the instantaneous measurement of whole flow field, makees
For a kind of brand-new unperturbed, transient state, whole audience speed measurement method, have in hydrodynamics and aerodynamic studies field high
Academic significance and practical value.In scientific research and education, the application that Particle Image Velocimetry applies to low-speed wind tunnel is more wide
It is general, as class demonstration, the high-precision measurement in low speed flow field, the measurement in small-scale structure flow field.Because what is obtained is the whole audience
Velocity information, other physical quantitys and thing in the flow fields such as pressure field, Vorticity Field can be easily solved with fluid motion equation
Manage information.
Utility model content
The purpose of this utility model is to design one kind to make class demonstration, and experimental cost is low, and operating method is simple, application
The widely low-speed wind tunnel experimental bench based on Particle Image Velocimetry.
The technical solution of the utility model is as follows：A kind of low-speed wind tunnel experimental bench based on particle image speed-measuring system, its
It is characterised by：It include be linked in sequence cfentrifugal blower, group section, smog blending section, honeycomb, steady flow segment, broken whirlpool net,
Experimental section, exhaust section.The installing mechanism of CCD camera and laser is located at the side of experimental section.CCD camera is two.Laser
It is installed among two described CCD cameras.Centrifugal fan uses frequency converter frequency control, the speed of centrifugal fan outlet
Degree excursion is 10-30m/s.The import of group section is circle and section is identical with the cfentrifugal blower outlet,
The outlet of group section is shaped as rectangle, and the switching segment length is 100mm, and angle of flare is 3 °.Steady flow segment is parallel with experimental section
Optical glass is used in the upper end wall of horizontal plane and laser projection face, remaining 2 face uses matt material.Honeycomb passes through flange
Blend between section and steady flow segment installed in smog, sealed by fluid sealant, its length is 50mm, single honeycomb size
For 5mm*5mm, the sectional dimension of the honeycomb is 100mm*100mm.Exhaust section is connected with experimental section by flange, and exhaust section goes out
Mouth is connected with gas exhaust piping.The installing mechanism of CCD camera is by being fastened by bolts on two inverted T-shaped supports provided with orbital i
Camera fixing seat forms, and the Camera fixing seat is provided with orbital i i, and laser mounting seat is fastened by bolts in the middle part of track ii,
Two Camera fixing seats are fastened by bolts the both sides of the laser mounting seat on track ii.Two CCD cameras are fixed respectively
On two Camera fixing seats.Laser stent provided with orbital i ii is vertical with the laser base with mounting hole to be fixed, laser
Device is fixed sliding block and fastened by screw and laser stent, and the laser of PIV systems is fixed by screws in laser and fixes cunning
On block.
The beneficial effects of the utility model for employing above technical scheme are as follows：It can both be used as experimental teaching with small
Type low speed experimental bench, simple and convenient safe practical operation is carried out to Particle Image Velocimetry, again can be with as class demonstration
Meet the wind tunnel experiment in high-precision low speed flow field, the two and three dimensions velocity field in experiment flow field to be measured can be obtained.It has real
Test the advantages of cost is low, measurement accuracy is high, and operating method is simple, is widely used, environment friendly and pollution-free.
Brief description of the drawings
Fig. 1 is a kind of overall structure signal of low-speed wind tunnel experimental bench based on Particle Image Velocimetry of the utility model
Figure.
Fig. 2 is CCD camera installing mechanism schematic diagram.
Fig. 3 is laser mounting bracket schematic diagram.
In figure：1st, cfentrifugal blower, 2, group section, 3, smog blending section, 4, honeycomb, 5, steady flow segment, 6, broken whirlpool net,
7th, experimental section, 8, exhaust section, 9, inverted T-shaped support, 10, CCD camera, 11, Camera fixing seat, 12, laser mounting seat, 13,
Orbital i, 14, orbital i i, 15, laser fix sliding block, 16, laser stent, 17, orbital i ii, 18, laser firm banking.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
Accompanying drawing 1 is that a kind of overall structure of the low-speed wind tunnel experimental bench based on Particle Image Velocimetry of the utility model is shown
It is intended to.The cfentrifugal blower 1, group section 2, smog that it includes being linked in sequence blend section 3, honeycomb 4, steady flow segment 5, broken whirlpool net
6th, experimental section 7, exhaust section 8.The mechanism for being provided with two CCD cameras 10 is located at the side of experimental section 7.Two on installing mechanism
Laser can be also installed among CCD camera.
Cfentrifugal blower 1 is used as wind tunnel air supply, carries out frequency control by using frequency converter, changes the supply of blower fan
Amount, play a part of adjusting air-flow velocity, the speed variation that cfentrifugal blower 1 exports is 10-30m/s.
The import of group section 2 is circle and section is identical with the outlet of cfentrifugal blower 1, and the outlet of group section 2 is cut
Face is shaped as rectangle, and the length of group section 2 is 100mm, and angle of flare is 3 °.
Smog blending section 3 is connected with group section 2 by flange, while smog blending section 3 passes through pipeline with aerosol producer
Connection, Incoming gas are sufficiently mixed with smog in smog blends section 3.Honeycomb 4 by flange be arranged on smog blend section 3 with
Between steady flow segment 5, and sealed with fluid sealant.Its length is 50mm, and single honeycomb size is 5mm*5mm.Honeycomb
The sectional dimension of device 4 is 100mm*100mm.
Mixed gas further mutually blending in honeycomb 4 of section 3 is blended by smog.Broken whirlpool net 6 passes through sealing gasket
And fluid sealant hydropexis is being arranged between steady flow segment 5 and experimental section 7, further broken whirlpool current stabilization is carried out to air-flow.
Steady flow segment 5 and experimental section 7 are made parallel to the upper end wall of horizontal plane and laser projection face using optical glass, other
2 faces are made using matt material, so as to facilitate the projection of laser and CCD camera to obtain steady flow segment and experimental section inside stream
, it is easy to measure steady flow segment 5 and the air-flow field in experimental section 7 using Particle Image Velocimetry.Exhaust section 8 with
Experimental section 7 is connected by flange, exhaust section 8 outlet be connected with gas exhaust piping, by smog by pipeline be directly discharged to outdoor or
Person is discharged into air after being purified by cleaner.The upper end wall and laser projection area of steady flow segment and experimental section parallel to horizontal plane
Domain is made using optical glass, and other faces are made using matt material,
The installing mechanism of CCD camera 10 is by the camera that is fastened by bolts on two inverted T-shaped supports 9 provided with orbital i -13
Fixed seat 11 forms.The Camera fixing seat 11 is provided with orbital i i-14.Laser mounting seat 12 is fastened by bolts in track
Ii-14 middle part.Two Camera fixing seats 11 are fastened by bolts the both sides of the laser mounting seat 12 on track ii-14.
Two CCD cameras 10 are separately fixed on two Camera fixing seats 11.From accompanying drawing 2 and accompanying drawing 3 as can be seen that on inverted T-shaped support 9
CCD camera 10 apart from experiment table top height can be by adjusting between CCD camera fixed seat 11 and inverted T-shaped mounting bracket 9
Relative position be adjusted along orbital i -13, experimental section is placed in inverted T-shaped support 9 between two CCD cameras 10 lower section,
Relative distance can be adjusted along the track 14 in CCD camera fixed seat 11 between CCD camera 10.Laser mounting seat
12 are arranged in CCD camera fixed seat 11 and can be needed according to experiment is specific along the orbital i i-14 in CCD camera fixed seat 11
Carry out position adjustments.Laser fixes sliding block 15, laser stent 16 and laser firm banking 18 and forms laser mounting bracket,
Laser is fixed sliding block 15 and is arranged on laser stent 16, and the laser of PIV systems is fixed by screws in laser and fixed
On sliding block 15, and it can need to carry out position adjustments along the orbital i ii-17 on laser stent 16 according to experiment is specific.
Carry out SPIV test the speed experiment when laser firm banking 18 laser mounting seat 12 is arranged on by screw, can also be along rail
Road ii-14 carries out position adjustments.
Claims (10)
- A kind of 1. low-speed wind tunnel experimental bench based on Particle Image Velocimetry, it is characterised in that：It include be linked in sequence from Core type air blower (1), group section (2), smog blending section (3), honeycomb (4), steady flow segment (5), broken whirlpool net (6), experimental section (7), exhaust section (8)；The installing mechanism of CCD camera (10) and laser is located at the side of the experimental section (7).
- A kind of 2. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： The described CCD camera (10) on the installing mechanism of experimental section (7) side is two.
- A kind of 3. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： Described laser is installed among two described CCD cameras (10).
- A kind of 4. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： Described centrifugal fan (1) uses frequency converter frequency control, and the speed variation of the centrifugal fan (1) outlet is 10- 30m/s。
- A kind of 5. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： The import of described group section (2) is circle and section is identical with the cfentrifugal blower (1) outlet, the group section (2) outlet is shaped as rectangle, and group section (2) length is 100mm, and angle of flare is 3 °.
- A kind of 6. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： Described steady flow segment (5) and experimental section (7) uses optical glass parallel to the upper end wall of horizontal plane and laser projection face, and remaining 2 Individual face uses matt material.
- A kind of 7. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： Described honeycomb (4) is arranged on smog by flange and blended between section (3) and steady flow segment (5), is sealed by fluid sealant, Its length is 50mm, and single honeycomb size is 5mm*5mm, and the sectional dimension of the honeycomb (4) is 100mm*100mm.
- A kind of 8. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： Described exhaust section (8) is connected with experimental section (7) by flange, and exhaust section (8) outlet is connected with gas exhaust piping.
- A kind of 9. low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 1, it is characterised in that： The installing mechanism of described CCD camera (10) is by being fastened by bolts on two inverted T-shaped supports (9) provided with orbital i (13) Camera fixing seat (11) forms, and the Camera fixing seat (11) is provided with orbital i i (14), and laser mounting seat (12) is bolted It is fastened in the middle part of the orbital i i (14), two Camera fixing seats (11) are fastened by bolts the laser on the orbital i i (14) The both sides of device mounting seat (12), two CCD cameras (10) are separately fixed on two described Camera fixing seats (11).
- 10. a kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry according to claim 8, its feature exist In：Laser stent (16) provided with orbital i ii (17) is vertical with the laser base (18) with mounting hole fixed, and laser is solid Fixed slider (15) is fastened by screw and the laser stent (16), and the laser of PIV systems is fixed by screws in laser Device is fixed on sliding block (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883578.5U CN207036386U (en) | 2017-07-20 | 2017-07-20 | A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883578.5U CN207036386U (en) | 2017-07-20 | 2017-07-20 | A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry |
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| Publication Number | Publication Date |
|---|---|
| CN207036386U true CN207036386U (en) | 2018-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720883578.5U Expired - Fee Related CN207036386U (en) | 2017-07-20 | 2017-07-20 | A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402113A (en) * | 2017-07-20 | 2017-11-28 | 大连海事大学 | A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry |
| CN110441021A (en) * | 2019-08-29 | 2019-11-12 | 浙江大学 | A kind of Flat Plate Turbulent Boundary Layer flow field structure measuring device and method based on PIV |
| CN113720574A (en) * | 2021-09-02 | 2021-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | Protection device of wind tunnel test attitude measurement system |
-
2017
- 2017-07-20 CN CN201720883578.5U patent/CN207036386U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402113A (en) * | 2017-07-20 | 2017-11-28 | 大连海事大学 | A kind of low-speed wind tunnel experimental bench based on Particle Image Velocimetry |
| CN107402113B (en) * | 2017-07-20 | 2023-07-07 | 大连海事大学 | Low-speed wind tunnel experiment table based on particle image velocimetry technology |
| CN110441021A (en) * | 2019-08-29 | 2019-11-12 | 浙江大学 | A kind of Flat Plate Turbulent Boundary Layer flow field structure measuring device and method based on PIV |
| CN113720574A (en) * | 2021-09-02 | 2021-11-30 | 中国空气动力研究与发展中心超高速空气动力研究所 | Protection device of wind tunnel test attitude measurement system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180223 Termination date: 20180720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |