CN109632248B - Blowing type active flow-increasing gust wind tunnel - Google Patents
Blowing type active flow-increasing gust wind tunnel Download PDFInfo
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- CN109632248B CN109632248B CN201910105381.2A CN201910105381A CN109632248B CN 109632248 B CN109632248 B CN 109632248B CN 201910105381 A CN201910105381 A CN 201910105381A CN 109632248 B CN109632248 B CN 109632248B
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- 238000007664 blowing Methods 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 27
- 238000009792 diffusion process Methods 0.000 claims abstract description 17
- 230000008602 contraction Effects 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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Abstract
The invention discloses a blowing type active flow increasing gust wind tunnel, which comprises: the device comprises a power section, a diffusion section, a stable contraction section, a test section and an outlet diffusion section which are connected in sequence; a bypass section is arranged in parallel with the power section, the rear end of the bypass section is communicated with the downstream of the power section, the front end of the bypass section is communicated with the outside, and a converging door is arranged at the communication part of the bypass section and the power section; when the confluence door is in an open state, the air flow in the bypass section can enter the downstream of the power section; the device is characterized in that a pressure relief seam or an opening and closing door is arranged on the peripheral wall of the bypass section, a shutoff valve and a bypass fan are arranged in the bypass section, the bypass fan is used for blowing generated air flow into the air inlet, the throttle valve enables the blocking area of the bypass section to change by adjusting the opening and closing degree of the movable blades, so that the flow of external air flow entering the bypass section is controlled, and the air flow and the power section air flow are combined to form gusts with the size changing in the test section.
Description
Technical Field
The invention relates to the technical field of wind engineering, in particular to a blowing type active flow increasing gust wind tunnel.
Background
Boundary layer wind tunnels play an increasingly important role in research in the field of wind engineering. The boundary layer wind tunnel has the capability of simulating the flow of an atmospheric boundary layer, and can provide technical support for researching the diffusion rule of atmospheric pollutants and the safety design research of a large-span bridge, a high-rise building, a tower and other unique structures.
The boundary layer wind tunnel can be divided into a blowing wind tunnel and a suction wind tunnel according to the flow direction of the air flow, wherein the blowing wind tunnel takes the air flow blown by a fan as a flow medium of the wind tunnel, and the suction wind tunnel sucks the air into a low-pressure area formed by the rotation of a fan blade to form the air flow. The application range of the two types of wind tunnels is very wide, but the specific application fields are different, and the suction wind tunnel can only carry out wind tunnel tests of non-sand-lifting such as detour and flow field measurement, and the blowing-out wind tunnel can carry out the non-sand-lifting Sha Fengdong test and sand-lifting tests such as starting wind speed and sand conveying rate of sand grains.
However, for some extreme meteorological events (such as gusts, hurricanes, etc.) where unsteady airflow dominates, conventional boundary layer wind tunnels lack the ability to simulate the transient effects of these events. Thus, there is a need for an atmospheric boundary layer wind tunnel that produces gust effects.
At present, the existing wind tunnel generally comprises a power section, a diffusion section, a stable contraction section, a test section and an outlet diffusion section, a bypass is not arranged in the structure of the wind tunnel, and the existing gust wind tunnel cannot completely simulate random gusts in an atmospheric boundary layer.
Disclosure of Invention
Based on the defects in the prior art, the invention provides a blowing type active flow increasing gust wind tunnel for generating gusts.
In order to solve the above problems, the following solutions have been proposed:
a blowing active flow increasing gust wind tunnel comprising: the device comprises a power section, a diffusion section, a stable contraction section, a test section and an outlet diffusion section which are connected in sequence;
a bypass section is arranged in parallel with the power section, the rear end of the bypass section is communicated with the downstream of the power section, the front end of the bypass section is communicated with the outside, and a converging door is arranged at the communication part of the bypass section and the power section; when the confluence door is in an open state, the air flow in the bypass section can enter the downstream of the power section; the device is characterized in that a pressure relief seam or an opening and closing door is arranged on the peripheral wall of the bypass section, a shutoff valve and a bypass fan are arranged in the bypass section, the bypass fan is used for generating air flow flowing from outside to the bypass section in the bypass section, the throttle valve enables the flow area of the bypass section to change by adjusting the opening and closing degree of the movable blades, so that the flow of the outside air flow entering the bypass section is controlled, and gusts with the size change are formed by converging the outside air flow into the test section. Meanwhile, the opening and closing frequency of the movable blade of the throttle valve is controlled to control the speed of the change of the size of gust.
When the movable blades on the shutoff valve are opened to completely block the bypass section, the opening and closing door is controlled to be opened to enable the air flow to be discharged outwards, so that the load on the bypass fan is reduced. Or the load on the bypass fan is reduced by arranging a pressure relief seam to enable the air flow to be discharged outwards.
Preferably, the bypass section comprises two groups and is symmetrically arranged at two sides of the power section.
Preferably, one or more bypass fans of the bypass section are arranged; when a plurality of fans are arranged in the same section of the bypass section.
Preferably, when a plurality of bypass fans are provided in the bypass section, the side-by-side arrangement of the fans is comparable in size to the cross-sectional dimension of the bypass section.
Preferably, the bypass section comprises:
a corner section for communicating with the power section;
and a bypass main section communicating with the corner section and coaxially disposed with the power section;
the shutoff valve and the bypass fan are arranged in the bypass main section, and the pressure relief slot or the opening and closing door is arranged on the peripheral wall of the bypass main section and corresponds to the space between the bypass fan and the shutoff valve.
The bypass fan is used for generating air flow flowing from the outside of the bypass section to the direction of the confluence gate in the power section, and the air flow speed of the bypass section entering the main channel cannot be changed in a transient state due to the fact that the period change of the fan is slower, so that the air flow of the main channel test section is changed in size.
Preferably, the bypass section comprises two bypass sections and is symmetrically arranged on two sides of the power section.
Preferably, the shutoff valve includes: the fixed fairings are provided with movable blades which can be opened and closed at the end parts of the fixed fairings.
Preferably, a pair of openable and closable movable blades are provided at the end of each of the fixed fairings.
Preferably, the shut-off valve comprises 5 fixed fairings.
Preferably, the power section, the converging section, the diverging section, the stable converging section, the test section, the outlet diverging section and the bypass section are all steel structures.
Preferably, the control mode of the shutoff valve includes: and regulating and controlling the oil pressure in the hydraulic system so as to drive the mechanical movement of a mechanical connecting rod connected with the shutoff valve, thereby realizing the control of the opening and closing of the shutoff valve.
Preferably, the control method of the merging gate includes: and the oil pressure in the hydraulic system is regulated and controlled so as to drive the mechanical movement of a mechanical connecting rod connected with the confluence door, so that the opening and closing of the confluence door are controlled.
Preferably, the control of the bypass fan controls the operation of the bypass fan through a variable frequency controller.
Preferably, the bypass opening and closing door is controlled by a regulating hydraulic system.
Compared with the prior art, the invention has the following beneficial effects:
the invention designs a blowing type active flow increasing gust wind tunnel, the main body of the wind tunnel comprises: the device comprises a power section, a diffusion section, a stable contraction section, a test section and an outlet diffusion section. The two sides of the power section are symmetrically provided with bypass sections for generating bypass airflow. And a converging door is arranged at the intercommunication part of the bypass section and the converging section, and the aim of forming gusts with variable sizes in the test section by converging the airflow of the bypass section and the airflow of the power section by means of opening the converging door is fulfilled.
The bypass section is internally provided with a shutoff valve and a bypass fan, the shutoff valve is provided with movable blades which can be opened and closed, and the bypass fan is operated, so that the bypass section generates airflow flowing from the outside to the direction of the confluence gate, and the blocking area of the bypass section is changed by adjusting the opening and closing degree of the movable blades, thereby controlling the flow of the external airflow entering the bypass section and forming gusts with the power section airflow in a confluence mode in a test section. Meanwhile, the opening and closing frequency of the movable blade of the throttle valve is controlled to control the speed of the change of the size of the gust, so that the gust of the atmospheric boundary layer can be simulated more truly.
In addition, when the merging door is closed, the merging effect of the closed bypass section is obtained. When the air flow flows through the test section and the stable contraction section at the upstream of the test section along the main channel, the gust wind tunnel is converted into a conventional constant flow velocity wind tunnel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hole in an embodiment of the present invention (also referred to herein as a abstract);
FIG. 2 is a schematic view of a section of a return portion of a gust bypass segment in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a fan section in a hole power section in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of a fan section of a wind tunnel bypass segment in accordance with an embodiment of the present invention;
FIG. 5 is a schematic diagram of the open state of the throttle valve in the bypass segment according to the embodiment of the present invention;
FIG. 6 is a schematic diagram of the closed state of the throttle valve in the bypass segment according to the embodiment of the present invention;
wherein: 101-a power section; 103-a diffusion section; 104-a stable constriction section; 105-test section; 106-an outlet diffuser section; 107-bypass segment; 108-a confluence gate; 109-a fan; 110-front end fan cover; 111-a rear end fan cover; 112-a rotation stop plate; 113-a shut-off valve; 114-corner segment; 116-honeycomb; 117-damping net; 118-fixing the air guide sleeve; 119-moving blades; 120-bypassing the main section; 121-a fan; 122- (electric) opening and closing door.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
the embodiment of the invention provides a gust wind tunnel to realize gust generation.
Referring to fig. 1 and 3, an gust wind tunnel according to an embodiment of the present invention includes:
the power section 101, the diffusion section 103, the stable contraction section 104, the test section 105 and the outlet diffusion section 106 are connected in sequence; specifically, each independent functional section can be an integral wind tunnel formed by welding or screwing. Wherein: a bypass section 107 is arranged in parallel with the power section 101, and a converging door 108 is arranged at the downstream communication position of the power section 101 at the rear end of the bypass section 107. Optionally, in order to ensure structural stability of the gust wind tunnel, the power section 101, the diffusion section 103, the stable contraction section 104, the test section 105, the outlet diffusion section 106 and the bypass section 107 are all made of all-steel materials.
Referring to fig. 3, a fan cover, a fan 109, and a rotation stop plate 112 are disposed in the power section 101. A fan 109 is located at the front end of the fan. The fan housing is divided into a front fan housing 110 and a rear fan housing 111 based on the position of the fan 109 and the direction of airflow. A fan is mounted inside the rear fan housing 111. The outside of the rear fan cover 111 is provided with a rotation stop piece 112.
In order to ensure uniformity of the flow field in the main channel, two bypass sections 107 are symmetrically arranged on two sides of the power section 101, so that the bypass sections 107 on the two sides are converged uniformly, and the problem of uniform difference of the air flow of the main channel caused by uneven air flow distribution is solved.
The length of the bypass section 107 is equivalent to the length of the power section, the bypass section is substantially parallel to the power section, and the bypass section is substantially flush with the power section outlet so that the air flow is smooth. (the caliber of the bypass section 107 is generally 1/3 of the caliber of the power taking section).
The confluence door 108 arranged at the communication part of the bypass section 107 and the power section 101 can rotate around the axis of the power section 101 to realize opening and closing. In the closed state, the merging gate 108 is a conventional constant flow velocity wind tunnel, that is, the airflow generated by the fan 109 in the power section 101 directly flows through the diffusion section 103, the stable contraction section 104, the test section 105 and the outlet expansion section 106. In the open state of the merging gate 108, the air flow generated by the fan 121 in the bypass section 107 enters the main passage through the merging gate 108; a shutoff valve 113 and a bypass fan 121 are arranged in the bypass section 107, the shutoff valve is used for opening and closing to control the blocking degree of the bypass section so as to control the flow rate of bypass airflow entering the main channel through the confluence gate, and the bypass fan is used for generating airflow flowing from the outside to the confluence gate direction in the bypass section; the electric opening and closing doors 122 are arranged outside two sides of the bypass section 107, and when the movable blades on the shutoff valve are opened to completely block the bypass section, the opening and closing doors are controlled to be opened to enable air flow to be discharged outwards, so that the load on the bypass fan can be reduced.
In the embodiment of the invention, the left side and the right side of the power section are provided with the bypass sections, so that the effect of converging with the air flow of the main channel to increase the air flow velocity of the main channel test section is achieved. And a converging door is arranged at the intercommunication part of the bypass section and the converging section, and the aim of enabling air flow to flow from the bypass section to the main channel can be achieved by means of opening the converging door. A shutoff valve and a bypass fan are arranged in the bypass section, movable blades capable of opening and closing are arranged on the shutoff valve, and the movable blades regularly move. The bypass fan is driven to rotate by running to achieve the purpose of generating bypass airflow in the bypass section, so that the airflow of the main channel test section is instantaneously changed on the original basis after the bypass fan is combined with the main channel airflow, and then gusts with variable sizes are formed.
When the wind-gusting wind tunnel runs, the fan drives the fan to rotate so as to generate air flow, and when the air flow flows through the confluence section along the bypass section, the hydraulic system controls the confluence door to open through the linkage mechanism so that part of the air flow enters the main channel. The swing of the movable blade at the rear end of the throttle valve is controlled through hydraulic linkage to enable the airflow to generate periodic change, and then the airflow flowing through the bypass section is brought into a wind tunnel to be converted into gusts. When the air flow flows through the test section paved with the small squares and the stable contraction section at the upstream of the test section along the main channel, the small raised squares enable the air flow field to generate high-frequency change, and the air flow field is more similar to natural wind.
In addition, when the merging door is closed, the air flow does not reenter the main passage. The gust generator is converted into a conventional constant wind speed direct current blowing wind tunnel.
Embodiment two:
in order to change the design, the two side bypass sections are optionally provided with pressure relief slits. The design is used for discharging the air flow outwards through the pressure relief joint when the shutoff valve is closed, so that the load on the bypass fan is reduced. When the confluence door is opened, the pressure relief slit does not influence normal air intake, the pressure relief slit is an annular slit, and the slit can be a slit with the width of 5 cm.
Embodiment III:
in this example, as shown in fig. 4, three fans are respectively arranged in the two side road sections; the three fans are arranged in the same section of the bypass section. The size of the three fans arranged in parallel is equivalent to the size of the section of the bypass section.
Embodiment four:
in order to simplify the system structure, alternatively, the bypass sections 107 may be provided in one group, and the air flow generated by the fan 121 in the bypass section 107 enters the main channel through the merging gate 108; a shutoff valve 113 and a fan 121 are arranged in the bypass section 107, the flow speed is controlled through opening and closing of the shutoff valve, and gusts are formed in the wind tunnel after the flow is combined with the airflow of the power section.
Fifth embodiment:
as shown in fig. 2 and 5, in the present embodiment, the bypass section 107 optionally includes: corner segment 114, bypass main segment 120. Wherein the corner segment 114 is for communicating with the diffuser segment 103; one end of the bypass main section 120 communicates with the corner section 114, and the bypass main section 120 is co-axial with the power section 101. The shutoff valve 113 and the blower 121 are provided inside the bypass main section 120, and the electric opening/closing door 122 is provided outside both sides of the bypass main section.
When the merging gate 108 is opened, the corner section 114 smoothly introduces the merged air flow into the diffuser section 103, reducing the loss of air flow energy. The bypass main section 120 and the power section 101 are axially parallel to each other, and the shutoff valve 113 and the fan 121 arranged in the bypass main section 120 bring the air flow in the bypass section into the wind tunnel.
Example six:
referring to fig. 5 and 6, the shutoff valve 113 according to the present embodiment includes: a plurality of fixed fairings 118, wherein the end of each fixed fairings 118 is provided with a movable vane 119 that can be opened and closed.
The movable vanes 119 provided at the end of each fixed pod 118 may be a pair. The shut-off valve includes 5 fixed pods 118.
Embodiment seven:
the blowing type active flow increasing gust wind tunnel is provided with double bypasses, a bypass fan is arranged in each bypass, and a pressure relief door or a pressure relief slit is arranged in each bypass. The design dimensions of the wind tunnel are as follows:
the overall length is 60.5m;
test section 2.5m x 2m x 16m (long);
power segment phi 5.1 x 9.1m (long);
bypass segment 1.7m x 4.5m x 9m (long);
2m x 4.5m of pressure release gate;
the width of the pressure relief seam is 5cm, or the pressure relief door is 0.2 mm or 3m.
Example eight:
in this embodiment, optionally, the control manner of the shutoff valve 113 includes: the oil pressure in the hydraulic system is regulated so as to drive the mechanical movement of a mechanical connecting rod connected with the shutoff valve 113, and the opening and closing of the shutoff valve 113 are controlled.
In this embodiment, optionally, the control manner of the merging gate 108 includes: the oil pressure in the hydraulic system is regulated and controlled to further drive the mechanical movement of the mechanical connecting rod connected to the confluence gate 108, so as to control the opening and closing of the confluence gate 108.
Example nine:
in this embodiment, optionally, the control manner of the electric opening/closing door 112 includes: the oil pressure in the hydraulic system is regulated so as to drive the mechanical movement of the mechanical connecting rod connected to the electric opening and closing door 112, so that the opening and closing of the electric opening and closing door 112 is controlled.
Example ten:
in this embodiment, optionally, the anti-rotation tab 112 on the rear fan housing 111 of the power section may act as a support to support the fan and fan 109 and the housing. A plurality of anti-rotation blades 112 are provided on the outer side of the rear-end fan cover 111 in the fan radial direction.
Example eleven:
referring to fig. 1, in the present embodiment, optionally, a honeycomb 116 and a damping net 117 are provided at the equiradial section between the diffuser section and the contraction section for rectifying the upstream unstable gas flow into a small vortex gas flow.
In addition, optionally, the hydraulic system regulating the shut-off valve 113 and the junction gate 108 in another embodiment of the present application is installed outside the wind tunnel. The control terminal of the hydraulic system is also located outside the wind tunnel. In addition, the control terminal is also used for controlling the rotating speed of the fan of the power section through the frequency converter.
Those skilled in the art will be able to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A blowing active flow increasing gust wind tunnel comprising: the device comprises a power section, a diffusion section, a stable contraction section, a test section and an outlet diffusion section which are connected in sequence; it is characterized in that the method comprises the steps of,
a bypass section is arranged in parallel with the power section, the rear end of the bypass section is communicated with the downstream of the power section, the front end of the bypass section is communicated with the outside, and a converging door is arranged at the communication part of the bypass section and the power section; when the confluence door is in an open state, the air flow in the bypass section can enter the downstream of the power section; the periphery wall of the bypass section is provided with a pressure relief slot or an opening and closing door, the bypass section is internally provided with a shutoff valve and a bypass fan, the bypass fan is used for bringing air flow outside the wind tunnel into the wind tunnel, the shutoff valve changes the flow area of the bypass section by adjusting the opening and closing degree of the movable blades, so that the flow of the air flow outside the bypass section is controlled, and the air flow of the power section are converged in the test section to form gusts;
the bypass section comprises two groups and is symmetrically arranged at two sides of the power section;
the bypass segment includes: a corner section for communicating with the power section and a bypass main section which communicates with the corner section and is coaxially arranged with the power section; the shutoff valve and the bypass fan are arranged in the bypass main section, and the pressure relief slot or the opening and closing door is arranged on the peripheral wall of the bypass main section and corresponds to the space between the fan and the shutoff valve;
the control mode of the shutoff valve comprises the following steps: regulating and controlling the oil pressure in a hydraulic system so as to drive the mechanical movement of a mechanical connecting rod connected with the shutoff valve, thereby realizing the control of the opening and closing of the shutoff valve; the control mode of the confluence door comprises the following steps: regulating and controlling the oil pressure in the hydraulic system so as to drive the mechanical movement of a mechanical connecting rod connected with the confluence door, thereby realizing control of opening and closing of the confluence door; the bypass fan is controlled to operate through the variable frequency controller.
2. The blowing-type active flow-increasing wind tunnel according to claim 1, wherein one or more bypass fans of the bypass section are provided; when a plurality of fans are arranged in the same section of the bypass section.
3. A blowing-type active flow-increasing wind tunnel according to claim 2, wherein when a plurality of bypass fans are provided in the bypass section, the side-by-side arrangement of the fans is equivalent to the cross-sectional dimension of the bypass section.
4. A blowing active flow increasing gust wind tunnel according to claim 1, wherein the shut-off valve comprises: the fixed fairings are provided with movable blades which can be opened and closed at the end parts of the fixed fairings.
5. A blowing active flow increasing wind tunnel according to claim 4 wherein the end of each fixed pod is provided with a pair of openable and closable movable blades.
6. A blowing active flow increasing wind tunnel according to claim 4, wherein said shut-off valve comprises 5 fixed fairings.
7. A blowing-type active flow-increasing wind tunnel according to claim 1, wherein the merging section, the power section, the diffusing section, the stable contracting section, the testing section, the outlet diffusing section and the bypass section are all steel structures.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105381.2A CN109632248B (en) | 2019-02-01 | 2019-02-01 | Blowing type active flow-increasing gust wind tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910105381.2A CN109632248B (en) | 2019-02-01 | 2019-02-01 | Blowing type active flow-increasing gust wind tunnel |
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| CN109632248B true CN109632248B (en) | 2024-02-06 |
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| GB1559327A (en) * | 1975-04-30 | 1980-01-16 | Honda Motor Co Ltd | Heater unit for air-conditioner in automobile vehicles |
| JP2000266635A (en) * | 1999-03-19 | 2000-09-29 | Hitachi Zosen Corp | Boundary layer turbulence-generating device |
| CN101398343A (en) * | 2007-09-26 | 2009-04-01 | 北京师范大学 | Wind-tunnel modelling device for sandstorm entironment and engineering |
| CN202092853U (en) * | 2011-05-19 | 2011-12-28 | 中国科学院寒区旱区环境与工程研究所 | Portable wind tunnel |
| CN107436220A (en) * | 2017-07-19 | 2017-12-05 | 国网福建省电力有限公司 | A kind of reverse-flow type frequency control multi-fan array wind-tunnel and its test method |
| CN209372356U (en) * | 2019-02-01 | 2019-09-10 | 国电环境保护研究院有限公司 | One kind blowing formula active flow increasing gust wind tunnel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6820477B2 (en) * | 2001-11-14 | 2004-11-23 | Freightliner Llc | Vehicle wind tunnel method and apparatus |
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2019
- 2019-02-01 CN CN201910105381.2A patent/CN109632248B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1559327A (en) * | 1975-04-30 | 1980-01-16 | Honda Motor Co Ltd | Heater unit for air-conditioner in automobile vehicles |
| JP2000266635A (en) * | 1999-03-19 | 2000-09-29 | Hitachi Zosen Corp | Boundary layer turbulence-generating device |
| CN101398343A (en) * | 2007-09-26 | 2009-04-01 | 北京师范大学 | Wind-tunnel modelling device for sandstorm entironment and engineering |
| CN202092853U (en) * | 2011-05-19 | 2011-12-28 | 中国科学院寒区旱区环境与工程研究所 | Portable wind tunnel |
| CN107436220A (en) * | 2017-07-19 | 2017-12-05 | 国网福建省电力有限公司 | A kind of reverse-flow type frequency control multi-fan array wind-tunnel and its test method |
| CN209372356U (en) * | 2019-02-01 | 2019-09-10 | 国电环境保护研究院有限公司 | One kind blowing formula active flow increasing gust wind tunnel |
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| CN109632248A (en) | 2019-04-16 |
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