CN209372359U - A kind of double test section direct current gust wind tunnels - Google Patents
A kind of double test section direct current gust wind tunnels Download PDFInfo
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- CN209372359U CN209372359U CN201920380742.XU CN201920380742U CN209372359U CN 209372359 U CN209372359 U CN 209372359U CN 201920380742 U CN201920380742 U CN 201920380742U CN 209372359 U CN209372359 U CN 209372359U
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Abstract
The utility model discloses a kind of double test section direct current gust wind tunnels, including outlet section, power section, diffuser, the first test section, contraction section and stable section；Described power section one end connects the outlet section communicated with the outside world, and the power section other end is connected to diffuser；First test section one end is connect with diffuser, and the other end is connect with contraction section；Contraction section side is connected to stable section, it is provided with the first tune stream section on diffuser, the second test section is additionally provided between outlet section and power section, is provided with reflux section between power section and the second test section, reflux section both ends are provided with the second tune stream section, are provided with switching door on the side wall of reflux section.Can the effect that can be tested simultaneously of two test sections, and the second test section can be closed according to actual needs.
Description
Technical field
The utility model relates to a kind of gust of property wind wind tunnel experiment devices, more specifically, it relates to which a kind of double test sections are straight
Flow gust wind tunnel.
Background technique
Wind-tunnel is briefly exactly an elongated pipeline Jing Guo special designing, is existed by dynamical system (motor and fan)
One flowing that air when object moves in air taking human as the air-flow freely controlled, can be simulated with it of its internal generation shows
As the case where, object receiving force, air around certain fixed objects around flow phenomenon and the aerial migration of flue gas, diffusion phenomena
Deng ".
Boundary layer wind tunnel plays increasingly important role in the research in Wind Engineering field.Boundary layer wind tunnel has mould
The ability of quasi- atmospheric boundary laminar flow can be the Diffusion Law of Pollution Study object and long-span bridge, skyscraper, tower etc.
The safe design research of many other unique textures provides technical support.
However, when occupying leading role for some extreme weather event (Gust front, hurricane etc.) unstable state air-flows,
Common boundaries layer wind-tunnel lacks the ability for simulating these event transient effects.Therefore, it is necessary to a kind of battle array wind effects of capable of generating
Boundary layer wind tunnel.
Turbulent flow in atmosphere, the in general scale of turbulence are bigger, then the frequency of turbulent flow is lower；The bigger obstacle of scale
The scale of turbulence that object generates is bigger.The turbulent flow that normal atmospheric boundary layer wind tunnel is generated by wedge and roughness element, wedge and coarse
The scale of member is generally in 0.1m or so, so the tumbling frequency generated is relatively high.And because having high buildings and large mansions, mountain in real atmosphere
The presence of the biggish barrier of the scales such as slope, the woods, so the energy of low frequency part can not be ignored in turbulent flow, it is therefore necessary to
Generate that scale is larger, the lower fluctuating wind of frequency in wind-tunnel, in this way can be more identical with true atmosphere, here it is our battle arrays
The design sense of wind wind-tunnel.
Currently, mechanical swing mechanism or adjustment wind is usually used in the atmospheric boundary layer wind tunnel that can generate battle array wind effect
Machine revolving speed generates fitful wind.But the fitful wind generated in this way, gust frequency are higher.And in atmospheric boundary layer with
It is low that machine gust velocity generation size variation has height to have, and therefore, current gust wind tunnel can not simulate in atmospheric boundary layer completely
Random fitful wind.
Blowing-type wind-tunnel and suction-type wind-tunnel can be divided into according to the flow direction of air-flow: blowing-type wind-tunnel is blown with blower
Flow media of the air-flow out as wind-tunnel；And suction-type wind-tunnel is then that the low-pressure area to be formed is rotated by fan blade Bigpian, it will be empty
Aspiration enters to form air-flow.Two kinds of wind-tunnel application range is all very wide, but concrete application field is again different.
It is ambient wind velocity close to static or very low meteorological condition that the premise of high pollution is generated in actual environment, because
Only in this environment, the pollutant of discharge cannot be spread apart, and lead to the heavily contaminated in some areas.Therefore direct current need to be used
Suction wind tunnel simulation outlet air quick access is bordering on zero and the stable meteorological condition of wind environment.Direct current blows the unsuitable main cause of formula and exists
It is located at test section upstream in its power section, gap of the blower fan when slowly running between multiple-blade is bigger to generate fixed frequency
Battle array effect, while wind can generate multidirectional sinuous flow and cause wind environment unstable when being spread downwards by power section.It returns
Streaming wind-tunnel can not be discharged into experiment after pollution sources release since the characteristic of its silent reflux causes when carrying out pollutant experiment
Outside environment, increase so that the background concentration of test section is constantly superimposed, hinders the measurement of experiment.And for substances such as sand and dust
When transmission experiment, direct current need to be selected to blow formula wind-tunnel, and gravel can be made to bring power section by air-flow using direct current suction and reverse-flow type
Damage blower.
External individual closed circuit, dual-purpose wind-tunnel of open circuit, structure is more complicated, and operation is very difficult, and can not generate a gust property effect
Fruit is not used in heavy construction application class wind-tunnel.A general wind-tunnel is only used for a kind of test, and wind-tunnel involves great expense not
It says, and inefficient, the utility model provides a kind of double test gust wind tunnel devices, can be to carry out two examinations in a wind-tunnel
It tests, has greatly saved cost, improve efficiency.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of double test section direct current fitful wind wind
Hole, with simulating natural environment, generating frequency has height to have low fitful wind.And two kinds of examinations can be carried out in a wind turbine apparatus
The advantage of mono-/bis-test section is tested or switched according to test requirements document, while also saving the occupied soil for establishing wind tunnel laboratory
Ground resource.
To achieve the above object, the utility model provides following technical solution:
A kind of double test section direct current gust wind tunnels, including outlet section, power section, diffuser, the first test section, contraction section and
Stable section；Described power section one end connects the outlet section communicated with the outside world, and the power section other end is connected to diffuser；First test
Duan Yiduan is connect with diffuser, and the other end is connect with contraction section；Contraction section side is connected to stable section, and is provided on diffuser
One adjusts stream section, and the second test section is additionally provided between outlet section and power section.
Further, reflux section is provided between power section and the second test section, reflux section both ends are provided with the second tune stream
Section, switching door is provided on the side wall of reflux section.
Further, the main pipeline for making wind-tunnel vertical with the second test section and the first test section is U-shaped respectively for reflux section,
Water conservancy diversion blade unit is provided at the connecting corner of reflux section two sides.
Further, the water conservancy diversion blade unit close to power section one end is movable, close to second test section one end water conservancy diversion
Blade unit be it is fixed, movable flow deflector unit bottom is provided with line style rolling guide-rail pairs, and water conservancy diversion blade unit can pass through
The line style rolling guide-rail pairs are moved to inside reflux section.
Further, switching door is movable and is located at power section on reflux section at projection, and being capable of pivoting
Realize that folding enables reflux section to be connected to or close；When switching door inwardly opens and closes, reflux section is in closed state, the second test
Section is closed；When switching door is closed, reflux section is connected to power section, and the second test section is opened, and air-flow can be from the first test section
The second test section, which is flowed to, through reflux section is discharged to the external world eventually by outlet section.
Further, damping screen and honeycomb and the second contraction section are provided between the second test section and reflux section.
Further, power section is additionally provided with sequentially connected rear end fan shroud, spin-ended, fan and front end fan shroud,
And rear end fan shroud is towards outlet section, and front end fan shroud is towards diffuser.
Further, first stream section is adjusted to include the first shutter device and the first electrically operated gate, the first shutter device is arranged in wind
On the outer wall of hole, the first electrically operated gate is located on the inside of the first shutter device, is provided with multiple blades on the first shutter device, air-flow can
It is flowed into diffuser from the external world by the gap between blade, the first electrically operated gate can be moved in translation along wind-tunnel inner wall, adjust stream
Segment number be it is multiple, on the side wall of diffuser be symmetrical arranged.
Further, second stream section is adjusted to include the second shutter device and the second electrically operated gate, the second shutter device is arranged in wind
On the outer wall of hole, the second electrically operated gate is located on the inside of the second shutter device, is provided with multiple blades on the second shutter device, air-flow can
Be flowed into the second electrically operated gate in wind-tunnel pipeline by the gap between blade from the external world (can be moved in translation, institute along wind-tunnel inner wall
State tune stream segment number be it is multiple, on the side wall at reflux section both ends be symmetrical arranged.
Further, the inside of stable section is connected to twice damping screen, and the side of damping screen is connected with honeycomb, honeycomb
It is in communication with the outside.
Through the above technical solutions, when switching door close when wind by stable section enter contraction section by the first test section, expand
It dissipates after section and power section after reflux section reflux and the second contraction section, until the second test section, being discharged eventually by outlet section.Second
Test section through the second contraction section contraction after cross-sectional area be the first test section 2/3rds, wind speed compared with the first test section again
It is promoted, can satisfy the requirement of small-scale model more high wind speed test, test section one can be tested with test section two at this time.
Wherein the first test section is suction in power section upstream, and the second experimental section is to blow formula by reflux section and power section downstream connection.
The first test section of suction can carry out building structure wind vibration pressure decay test.The pollution of the particulate species such as dust can be carried out by blowing the second test section of formula
Object diffusion test.Because of its measuring instrument difference, interference will not be generated to mutual test, therefore, two test sections can simultaneously into
Row test.
After movable water conservancy diversion blade unit is mobile into reflux section, when switching door is inwardly opened, reflux section closing, at this time
Wind-tunnel is single test section direct current suction wind-tunnel.Wind enters contraction section by entrance stable section, by the first test section, diffuser and moves
The door opening of power Duan Houjing switching door directs out boundary's discharge, and gas pollutant concentration will not be caused to be superimposed shadow to inlet air
It rings, the first test section can carry out gas pollutant diffusion test at this time, and the second test section deactivates.
Wherein stable section is the equal diameter pipeline for making air-flow keep uniform and stable, and honeycomb, resistance are also mounted in stable section
The rectifier equipments such as Buddhist nun's net.Wherein damping screen is to keep inlet air flow uniform, stable, and honeycomb is to carry out combing straight guiding to air-flow.
The stable section other side is connected with the contraction section for accelerating air-flow uniformly, and when air-flow is along contraction flow, Dong Bishang is not separated.
When test, air-flow is flowed into from air inlet, becomes air-flow more uniformly by honeycomb, then will by contraction section
Air velocity improves, and enters the first test section later, reaches outlet section through diffuser after air-flow is by test section, finally by going out
Mouth section stream enters in atmosphere.
When switching door is closed, wind-tunnel is double test section direct current wind-tunnel, and the first test section is direct current suction test section, second
Test section is that direct current blows formula test section, and double test sections are run simultaneously.Opening the first electrically operated gate at this time makes fraction from the external world
It is inhaled into after wind-tunnel by shutter device and the second test section is blowed to by power section, to make the wind at the first test section of main channel
Speed reduces.The folding of the blade of the first shutter device in stream section is adjusted in control first simultaneously, thus it is possible to vary the external world is inhaled into air inlet hole
Throughput so that the first test section wind speed generate height change, to form fitful wind.By controlling the first shutter device blade
Folding frequency, thus it is possible to vary the first test section fitful wind variation speed.Similarly, after opening the second electrically operated gate, it may make air-flow
When blowing to outlet from the second test section, it is discharged into outside wind-tunnel, makes at the second shutter device that fraction adjusts stream section by second
The wind speed that the second test section must be reached generates height variation to generate fitful wind in the second test section.Pass through control the second blinds dress
Set the folding frequency of blade, thus it is possible to vary the speed of the second test section fitful wind variation.
When water conservancy diversion blade unit moves to the inside 90 degree of openings of switching door in reflux section at the power section, wind-tunnel is by double tests
Section is changed to single test section, and the wind-tunnel is direct current suction wind-tunnel at this time, opens first at this time and adjusts stream section two sides electrically operated gate, so that portion
Divide air-flow that can be inhaled into after wind-tunnel from the external world by the first shutter device and opening is blowed to by power section, to make main channel first
Wind speed at test section reduces.Simultaneously control first adjust stream section shutter device blade folding, thus it is possible to vary the external world be inhaled into
The throughput of wind-tunnel, so that the first test section wind speed generates height and changes, to form fitful wind.By controlling shutter device blade
Folding frequency, thus it is possible to vary the first test section fitful wind variation speed.
The above-mentioned wind-tunnel that can simply switch between single test section and double test sections is to cater to varying environment test for contamination
Demand.Direct current blows formula and is not suitable for being that its power section is located at test section upstream, wind the main reason for carrying out contamination test
The bigger battle array effect that can generate fixed frequency in gap of the machine fan when slowly running between multiple-blade, while wind is passing through power
Multidirectional sinuous flow, which can be generated, when section diffusion downwards causes wind environment unstable.Characteristic of the return circuit wind tunnel due to its silent reflux
Cause when carrying out pollutant experiment, can not be discharged into outside experimental situation after pollution sources release, so that the background pollution of test section
Concentration, which is constantly superimposed, to be increased, and the measurement of experiment is hindered.Why selecting U-shaped as the reason of structure is because saving land occupation length
Spend area.Lab space utilization rate is improved as far as possible.
In conclusion the utility model has the following beneficial effects:
1, the simple construction cost of structure is relatively low；
2, it can be realized in large tunnel to Wind Engineering project (such as wind pressure wind shake, wind environment, skies different in atmospheric boundary layer
Gas pollution, mass transfer etc.) simulation, background concentration caused by the cumulative effect without worrying tracer increases, and influences
The accuracy of simulated experiment, and damage of the fine particle to power section when dirt is tested is played, it is beneficial to practical engineering application；
3, most of wind-tunnel, air velocity are changed by adjusting the revolution of fan, this makes changing for test section speed
Become slow.However the utility model flows the folding of the shutter device blade in section by adjusting, almost moment changes test
Air velocity forms the fitful wind of wind speed size variation in section, can more accurately simulate natural wind in real atmosphere boundary layer,
Such flow simulating rheonomous is extremely important, it opens frontier, grinds for unsteady flow is aerodynamic
Study carefully and provides testing machine meeting；
4, two kinds of tests can be selected individually or simultaneously or carry out, it is more economical and quick and more efficient.Together
When save occupied area, and improve lab space utilization rate.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of double test section direct current gust wind tunnels；
Fig. 2 is the status diagram of double test section direct current gust wind tunnels when switching door is opened；
Fig. 3 is structural schematic diagram when the first electrically operated gate is opened；
Fig. 4 is structural schematic diagram when the first electrically operated gate is closed；
Fig. 5 is structural schematic diagram when the second electrically operated gate is closed；
Fig. 6 is structural schematic diagram when the second electrically operated gate is opened.
In figure: 101, stable section；102, contraction section；103, the first test section；104, first stream section is adjusted；105, diffuser；
106, power section；107, outlet section；109, fan；110, front end machine cover；111, backend machine cover；112, spin-ended；113,
First shutter device；114, the first electrically operated gate；116, honeycomb；117, damping screen；302, the second test section；315, second is electronic
Door；316, the second shutter device；330, switching door；331, second stream section is adjusted；332, water conservancy diversion blade unit；334, reflux section.
Specific embodiment
Referring to Fig.1 shown in -6, a kind of double test section direct current gust wind tunnels, including outlet section 107, power section 106, diffuser
105, the first test section 103, contraction section 102 and stable section 101；Described 106 one end of power section connects the outlet communicated with the outside world
Section 107,106 other end of power section is connected to diffuser 105；First test section, 103 one end is connect with diffuser 105, the other end
It is connect with contraction section 102；102 side of contraction section is connected to stable section 101, it is characterised in that: is provided with first on diffuser 105
Stream section 104 is adjusted, the second test section 302 is additionally provided between outlet section 107 and power section 106.Power section 106 and the second test section
Reflux section 334 is provided between 302,334 both ends of reflux section are provided with the second tune stream section 331, are arranged on the side wall of reflux section 334
There is switching door 330.The main pipeline for making wind-tunnel vertical with the second test section 302 and the first test section 103 is in reflux section 334 respectively
It is U-shaped, water conservancy diversion blade unit 332 is provided at 334 two sides connecting corner of reflux section.Water conservancy diversion blade unit close to 106 one end of power section
332 is movable, and the water conservancy diversion blade unit 332 close to 302 one end of the second test section is fixed, movable water conservancy diversion blade unit
332 bottoms are provided with line style rolling guide-rail pairs, and water conservancy diversion blade unit 332 can be moved to reflux section by the line style rolling guide-rail pairs
Inside 334.Switching door 330 is movable and is located at power section 106 on reflux section 334 at projection, and being capable of pivoting
Realize that folding enables reflux section 334 to be connected to or close；When switching door 330 inwardly opens and closes, reflux section 334 is in closed
State, the second test section 302 are closed；When switching door 330 is closed, reflux section 334 is connected to power section 106, the second test section 302
It opens, air-flow can flow to the second test section 302 through reflux section 334 from the first test section 103 and be discharged to eventually by outlet section 107
It is extraneous.
Damping screen 117 and honeycomb 116 and the second contraction section are provided between second test section 302 and reflux section 334.
Power section 106 is additionally provided with sequentially connected rear end fan shroud 111, spin-ended 112, fan 109 and front end fan shroud 110, and
And rear end fan shroud 111 is towards outlet section 107, front end fan shroud is towards diffuser 105.First adjusts stream section 104 to include the 100th
Leaf device 113 and the first electrically operated gate 114, the first shutter device 113 are arranged on wind-tunnel outer wall, and the first electrically operated gate 114 is located at the
On the inside of one shutter device 113, multiple blades are provided on the first shutter device 113, air-flow can pass through between blade from the external world
Gap be flowed into diffuser 105, the first electrically operated gate 114 can be moved in translation along wind-tunnel inner wall, adjust stream 104 quantity of section be more
It is a, it is symmetrical arranged on the side wall of diffuser 105.
Second adjusts stream section 331 to include the second shutter device 316 and the second electrically operated gate 315, and the setting of the second shutter device 316 exists
On wind-tunnel outer wall, the second electrically operated gate 315 is located at 316 inside of the second shutter device, is provided with multiple leaves on the second shutter device 316
Piece, air-flow can be flowed into wind-tunnel pipeline from the external world by the gap between blade that the second electrically operated gate 315 can be along wind-tunnel
Wall is moved in translation, tunes stream 104 quantity of section be it is multiple, it is arranged symmetrically on the side wall at 334 both ends of reflux section.Stable section
101 inside is connected to twice damping screen 117, and the side of damping screen 117 is connected with honeycomb 116, and honeycomb 116 and the external world are even
It is logical.
Reflux section 334 is vertical with the second test section 302, the first test section 103 respectively；In turning, due to turning for air-flow
It is curved, there is the centrifugal force from the center of curvature to pipe outer wall, this allows for air-flow in turning, and the pressure of outer wall increases and inner wall
Pressure reduction.So the air-flow velocity at outer wall will reduce, and its flow velocity will increase accordingly at inner wall, therefore in outer wall
Nearby there is diffusion effect, and blockage effect is then occurring at inner wall.Air-flow has opposite phenomenon to produce after turning
It is raw, i.e., diffusion effect is generated near inner wall, and blockage effect is generated near outer wall.Diffusion effect causes inside and outside flow shedding
Wall.Therefore air-flow turning be easy to generate separation and there is convection current, in order to prevent air-flow separate, improve air-flow flowing and
Loss is reduced, has turning vane in corner unit 332 corner is well-designed.334 two sides of reflux section are additionally provided with the second tune stream section
331 and switching door 330.When switching door 330 is closed, (as shown in Figure 1) wind turbine apparatus constitutes single loop, and air-flow is tested from first
Section 103 flows to the second test section 302 through reflux section 334, is additionally provided with damping screen between the second test section 302 and reflux section 334
117, for becoming air-flow uniformly, final air-flow is flowed out from outlet section 107.It is at this time double test section direct currents.Pass through control the
Two adjust the opening and closing of the second electrically operated gate 315 in stream section 331 to carry out coutroi velocity.When water conservancy diversion blade unit 332 is moved to inside 334, folding
When door 330 is opened (as shown in Figure 2), in vertical state, switching door 330 is by the first test section for switching door 330 and reflux section 334
103 and second test section 302 separate, at this time the first test section 103 open when, the second test section 302 close, air-flow will directly from
It is flowed out at the door opening of switching door 330, is at this time single test section direct current.
Second adjusts the working principle of stream section 331 are as follows: Fig. 5 is referred to, when the second electrically operated gate 315 for having motor control is closed
When, second adjusts one closed area of formation inside stream section 331, and wind-tunnel interior air-flow is by the first test section 103 through reflux section 334 at this time
Flow to the second test section 302.When the second electrically operated gate 315 is opened, as shown in fig. 6, second adjusts stream section 331 to form open circuit, part
Air-flow can be flowed out from the second shutter device 316.
Claims (10)
1. a kind of double test section direct current gust wind tunnels, including outlet section (107), power section (106), diffuser (105), the first examination
Test section (103), contraction section (102) and stable section (101)；Described power section (106) one end connects the outlet section communicated with the outside world
(107), power section (106) other end is connected to diffuser (105)；First test section (103) one end and diffuser (105) are even
It connects, the other end is connect with contraction section (102)；Contraction section (102) side is connected to stable section (101), it is characterised in that: diffuser
(105) it is provided with the first tune stream section (104) on, is additionally provided with the second test section between outlet section (107) and power section (106)
(302)。
2. double test section direct current gust wind tunnels according to claim 1, it is characterised in that: power section (106) and the second examination
It tests between section (302) and is provided with reflux section (334), reflux section (334) both ends are provided with the second tune stream section (331), reflux section
(334) switching door (330) are provided on side wall.
3. double test section direct current gust wind tunnels according to claim 2, it is characterised in that: the reflux section (334) is respectively
The main pipeline for making wind-tunnel vertical with the second test section (302) and the first test section (103) is U-shaped, and reflux section (334) two sides connect
It meets corner and is provided with water conservancy diversion blade unit (332).
4. double test section direct current gust wind tunnels according to claim 3, it is characterised in that: close to power section (106) one end
Water conservancy diversion blade unit (332) be it is movable, the water conservancy diversion blade unit (332) close to the second test section (302) one end be it is fixed, it is living
Water conservancy diversion blade unit (332) bottom of dynamic formula is provided with line style rolling guide-rail pairs, and water conservancy diversion blade unit (332) can be rolled by the line style
It is internal that dynamic guideway is moved to reflux section (334).
5. double test section direct current gust wind tunnels according to claim 4, it is characterised in that: the switching door (330) is to live
Dynamic formula and be located at power section (106) on reflux section (334) at projection, and can pivoting realize that folding makes reflux section
(334) it can be connected to or close；When switching door (330) inwardly opens and closes, reflux section (334) is in closed state, the second test
Section (302) is closed；When switching door (330) are closed, reflux section (334) is connected to power section (106), the second test section (302)
It opens, air-flow can flow to the second test section (302) eventually by outlet section from the first test section (103) through reflux section (334)
(107) it is discharged to the external world.
6. double test section direct current gust wind tunnels according to claim 5, it is characterised in that: the second test section (302) with return
Damping screen (117) and honeycomb (116) and the second contraction section are provided between stream section (334).
7. double test section direct current gust wind tunnels according to claim 6, it is characterised in that: the power section (106) also sets
It is equipped with sequentially connected rear end fan shroud (111), spin-ended (112), fan (109) and front end fan shroud (110), and rear end
Fan shroud (111) is towards outlet section (107), and front end fan shroud is towards diffuser (105).
8. double test section direct current gust wind tunnels according to claim 7, it is characterised in that: described first adjusts stream section (104)
Including the first shutter device (113) and the first electrically operated gate (114), the first shutter device (113) is arranged on wind-tunnel outer wall, and first
Electrically operated gate (114) is located on the inside of the first shutter device (113), is provided with multiple blades, air-flow energy on the first shutter device (113)
Enough to be flowed into diffuser (105) from the external world by the gap between blade, the first electrically operated gate (114) can be flat along wind-tunnel inner wall
Move movement, adjust stream section (104) quantity be it is multiple, on the side wall of diffuser (105) be symmetrical arranged.
9. double test section direct current gust wind tunnels according to claim 8, it is characterised in that: the second tune flows section (331) and includes
Second shutter device (316) and the second electrically operated gate (315), the second shutter device (316) are arranged on wind-tunnel outer wall, and second is electronic
Door (315) is located at the second shutter device (316) inside, is provided with multiple blades on the second shutter device (316), and air-flow can be from
The external world, which is flowed into the second electrically operated gate (315) in wind-tunnel pipeline by the gap between blade, to be moved in translation along wind-tunnel inner wall,
Tune stream section (104) quantity be it is multiple, be symmetrical arranged on the side wall at reflux section (334) both ends.
10. double test section direct current gust wind tunnels according to claim 1, it is characterised in that: the inside of stable section (101) connects
Then the side of twice damping screen (117), damping screen (117) is connected with honeycomb (116), and honeycomb (116) is in communication with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920380742.XU CN209372359U (en) | 2019-03-23 | 2019-03-23 | A kind of double test section direct current gust wind tunnels |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916587A (en) * | 2019-03-23 | 2019-06-21 | 国电环境保护研究院有限公司 | A kind of double test section direct current gust wind tunnels |
| CN114199497A (en) * | 2021-10-29 | 2022-03-18 | 东风商用车有限公司 | Wind field environment simulation wind tunnel structure for engine bench test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916587A (en) * | 2019-03-23 | 2019-06-21 | 国电环境保护研究院有限公司 | A kind of double test section direct current gust wind tunnels |
| CN109916587B (en) * | 2019-03-23 | 2024-02-06 | 国电环境保护研究院有限公司 | Double-test-section direct-current gust wind tunnel |
| CN114199497A (en) * | 2021-10-29 | 2022-03-18 | 东风商用车有限公司 | Wind field environment simulation wind tunnel structure for engine bench test |
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