CN112945505B - Turntable structure for wind tunnel test and application method thereof - Google Patents
Turntable structure for wind tunnel test and application method thereof Download PDFInfo
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- CN112945505B CN112945505B CN202110125502.7A CN202110125502A CN112945505B CN 112945505 B CN112945505 B CN 112945505B CN 202110125502 A CN202110125502 A CN 202110125502A CN 112945505 B CN112945505 B CN 112945505B
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- 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
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Abstract
The invention relates to a turntable structure for wind tunnel test and a use method thereof, wherein the turntable structure is arranged in an experimental cabin of a wind tunnel and comprises the following components: the test bed is rotatably arranged at the bottom of the test cabin; and a plurality of adjusting parts which are arranged at the top of the test bed in a height-adjustable manner, wherein the building model is arranged at the top of the adjusting parts, the heights of the adjusting parts are adjusted, so that the building model stretches into the experimental cabin, and the adjusting parts shield part of the building model to simulate the subsidence topography of the building model, and then the test bed is rotated to drive the building model to rotate, so that wind tunnel test is carried out on the building model. The invention effectively solves the problem that the traditional turntable is not suitable for buildings in the subsidence topography, and can simulate the actual subsidence topography, thereby effectively testing the whole building, having small deviation between the experimental result and the actual situation and high precision.
Description
Technical Field
The invention relates to the field of wind tunnel tests, in particular to a turntable structure for a wind tunnel test and a using method thereof.
Background
The test section of the wind tunnel is provided with a circular turntable capable of rotating by 360 degrees, the three-dimensional building model is fixed at the top of the turntable, the circular turntable is driven by a motor to rotate, and the building model is driven to synchronously rotate through the rotation of the circular turntable, so that the purpose of changing the wind direction is achieved.
However, the conventional turntable is a simple rotating surface, the building model is directly installed at the top of the turntable, the building model cannot be suitable for buildings with sunken terrains, the sunken terrains are difficult to simulate, the buildings in the sunken terrains are difficult to effectively test, and the test results have limitations and have larger deviation from actual conditions.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a turntable structure for wind tunnel test and a use method thereof, solves the problem that the traditional turntable cannot be suitable for buildings in sunken terrains, and can simulate actual sunken terrains so as to effectively test the whole building, and has small deviation between experimental results and actual conditions and high precision.
The technical scheme for achieving the purpose is as follows:
the invention provides a turntable structure for wind tunnel test, which is arranged in an experimental cabin of a wind tunnel and comprises:
the test bed is rotatably arranged at the bottom of the test cabin; and
the height-adjustable installs in a plurality of regulating parts at the top of test bench, through installing building model in the top of regulating part and adjust the height of a plurality of regulating parts for building model stretches into in the experimental cabin, and a plurality of regulating parts shelter from partial building model, with the subsidence topography of simulation building model, and then rotate the test bench, in order to drive building model rotation, thereby carry out wind tunnel test to building model.
The invention provides a turntable structure for wind tunnel test, which is characterized in that a building model is arranged at the top of an adjusting part, the heights of a plurality of adjusting parts are adjusted, the building model stretches into an experimental cabin, the rest of the adjusting parts cover part of the building model to simulate the subsidence terrain of the building model, the rest of the adjusting parts are matched with the actual terrain of the building model, and a test bed is rotated to drive the building model to rotate, so that wind tunnel test is carried out on the building model, the problem that the traditional turntable cannot be suitable for a building in the subsidence terrain is solved, the actual subsidence terrain can be simulated, the effective test is carried out on the whole building, the deviation between an experimental result and the actual situation is small, and the precision is high.
The invention further improves a turntable structure for wind tunnel test, which comprises a plurality of through holes corresponding to the adjusting piece and arranged on the test bed, a nut corresponding to the through holes and fixed on the test bed, and a screw rod screwed with the nut and penetrating through the through holes, wherein the adjusting piece is sleeved on the screw rod;
the height of the adjusting member is adjusted by screwing the screw to change the length of the portion of the screw above the test stand.
The invention is a further improvement of a turntable structure for wind tunnel test, which is characterized in that the bottom of the experimental cabin is provided with a mounting hole;
the test bed is correspondingly arranged below the mounting hole, and the adjusting piece stretches into the experiment cabin through the mounting hole.
The invention further improves a turntable structure for wind tunnel test, which comprises a fence fixed at the bottom of the test cabin and surrounding the mounting hole, wherein the surface of the test bed is attached to the bottom of the fence, and a plurality of adjusting pieces are positioned in the fence.
The turntable structure for wind tunnel test is further improved in that the mounting hole is circular;
the adjusting pieces are round corresponding to the mounting Kong Pinge.
The invention further improves a turntable structure for wind tunnel test, which is characterized in that nine adjusting pieces are arranged, one adjusting piece is arranged at the center of a test bed, and eight adjusting pieces are arranged around the adjusting piece at the center of the test bed.
The turntable structure for wind tunnel test is further improved in that the adjusting piece positioned at the center of the test bed is octagonal.
The turntable structure for wind tunnel test is further improved by further comprising clamping grooves which are formed on the side parts of the adjusting pieces and are vertically arranged, and raised strips which are formed on the corresponding side parts of the adjacent adjusting pieces and are matched with the clamping grooves;
the convex strips are inserted into the clamping grooves, so that two adjacent adjusting pieces are connected with each other, and the two adjacent adjusting pieces can move relatively along the vertical direction.
The invention is a further improvement of a turntable structure for wind tunnel test, which is characterized in that the side part of the building model is provided with a pressure measuring hole, and the pressure measuring hole is connected with a pressure measuring module through a pressure measuring hose;
the interior cavity of regulating part is formed with the accommodation space that supplies to place the pressure measurement module, and the hole is seted up at the top of regulating part to supply the pressure measurement hose to pass.
The invention provides a use method of a turntable structure for wind tunnel tests, which comprises the following steps:
providing a turntable structure, and installing the turntable structure at the bottom of the experiment cabin;
providing a building model, mounting the building model on the top of the adjusting parts, adjusting the heights of the adjusting parts so that the building model stretches into the experimental cabin, and covering part of the building model by the adjusting parts to simulate the subsidence terrain of the building model;
and rotating the test bed to drive the building model to rotate, so as to perform wind tunnel test on the building model.
Drawings
FIG. 1 is a perspective view showing the state of use of the turntable structure for wind tunnel test according to the present invention.
Fig. 2 is a perspective view of a turntable structure for wind tunnel test according to the present invention.
FIG. 3 is a top view of a turntable structure for wind tunnel test according to the present invention.
Fig. 4 is an enlarged schematic view of a portion a in fig. 3.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, the invention provides a turntable structure for wind tunnel test and a use method thereof, wherein a building model is arranged at the top of an adjusting part, so that the heights of a plurality of adjusting parts are adjusted, the building model stretches into an experimental cabin, and the rest of the adjusting parts cover part of the building model so as to simulate the subsidence topography of the building model, and the rest of the adjusting parts are matched with the actual topography of the building model, so that a test bed is rotated to drive the building model to rotate, thereby wind tunnel test is carried out on the building model, the problem that the traditional turntable cannot be suitable for a building in the subsidence topography is solved, the actual subsidence topography can be simulated, the effective test is carried out on the whole building, the deviation between an experimental result and the actual situation is small, and the precision is high. The turntable structure for wind tunnel test according to the present invention will be described with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a perspective view showing a use state of a turntable structure for wind tunnel test according to the present invention. The turntable structure for wind tunnel test according to the present invention will be described with reference to fig. 1.
As shown in fig. 1 and 2, the turntable structure for wind tunnel test of the present invention is mounted to an experimental cabin 21 of a wind tunnel, and comprises:
a test stand 11 rotatably mounted to the bottom of the test chamber 21; and
the height-adjustable installs in a plurality of regulating parts 12 at the top of test bench 11, through installing building model in the top of regulating part 12 and adjust the height of a plurality of regulating parts 12 for building model stretches into in the experimental cabin 21, and a plurality of regulating parts 12 shelter from partial building model, with the subsidence topography of simulation building model, and then rotate test bench 11, in order to drive the building model rotation, thereby carry out wind tunnel test to the building model.
Specifically, the side part of the building model is provided with a pressure measuring hole, and the pressure measuring hole is connected with a pressure measuring module through a pressure measuring hose so as to detect the wind pressure born by the building model;
the interior of the adjusting member 12 is hollow to form a receiving space for placing the pressure measuring module, and the top of the adjusting member 12 is provided with a hole 121 for the pressure measuring hose to pass through.
Preferably, the building in the subsidence topography may be such as a Shanghai Shewanese world trade hotel, i.e. a building built in a pit or according to mountains, the building part being covered or surrounded by mountain or surrounding soil.
Specifically, the position of the ground corresponding to the test cabin 21 is vertically provided with a rotating shaft 111, the rotating shaft 111 correspondingly penetrates through the center of the test stand 11, the test stand 11 is rotatably connected with the rotating shaft 111 through a bearing, a motor 112 is fixedly arranged on the bottom surface near the test stand 11, and an output shaft of the motor 112 is in driving connection with the test stand 11, so that the motor 112 can drive the test stand 11 to rotate.
As a preferred embodiment of the present invention, as shown in fig. 2, the present invention further includes a plurality of through holes corresponding to the adjusting member 12 and opened on the test stand 11, a nut 131 corresponding to the through holes and fixed on the test stand 11, and a screw 13 screwed to the nut 131 and penetrating the through holes, wherein the adjusting member 12 is sleeved on the screw 13;
the height of the adjusting member 12 is adjusted by screwing the screw 13 to change the length of the portion of the screw 13 located above the test stand 11.
Specifically, the adjusting member 12 is provided with a connecting hole corresponding to the screw 13, and the screw 13 is inserted into the connecting hole, so that the adjusting member 12 is sleeved on the screw 13.
Further, a mounting hole is formed in the bottom of the experimental cabin 21;
the test stand 11 is correspondingly arranged below the mounting hole, and the adjusting piece 12 extends into the test chamber 21 through the mounting hole.
Specifically, still include to be fixed in the bottom of experimental cabin 21 and enclose the fender 15 of mounting hole, the face laminating of test bench 11 is in the bottom of enclosing fender 15, and a plurality of regulating parts 12 are located and enclose fender 15 to prevent that the wind in the experimental cabin 21 from revealing from the mounting hole.
Preferably, the mounting hole is circular;
the adjusting members 12 are circular in shape corresponding to the mounting members Kong Pinge.
Specifically, as shown in fig. 3, the number of the adjusting members 12 is nine, one adjusting member 12 is provided at the center of the test stand 11, and eight adjusting members 12 are provided around the adjusting member 12 at the center of the test stand 11.
Preferably, the adjusting member 12 located at the center of the test stand 11 is in an octagonal shape, and the building model can be installed on top of the adjusting member at the center, and the actual topography around the building model can be simulated by adjusting the eight adjusting members around, that is, the heights of the eight adjusting members around can be adjusted to simulate the topography of mountain bodies and the like around the actual building, so that the surrounding adjusting members partially shield the building model and match with the actual subsidence topography.
Further, as shown in fig. 4, the device further comprises a clamping groove formed on the side part of the adjusting piece 12 and arranged vertically, and a convex strip 14 formed on the corresponding side part of the adjacent adjusting piece 12 and matched with the clamping groove;
the convex strips 14 are inserted into the clamping grooves, so that two adjacent adjusting pieces 12 are connected with each other, and the two adjacent adjusting pieces 12 can move relatively along the vertical direction.
Specifically, the cross section of the slot is trapezoidal, and the width of the slot near the opening is smaller than the width of the slot far away from the opening, and the cross section of the raised strip 14 is correspondingly trapezoidal.
Preferably, the eight sides of the adjusting piece located at the center are provided with clamping grooves, the side parts corresponding to the other eight adjusting pieces are provided with raised strips 14, so that the surrounding eight adjusting pieces are in plug-in connection with the adjusting piece located at the center through the clamping grooves and the raised strips 14, at the moment, the adjusting pieces 12 cannot realize transverse movement, so that the adjusting pieces 12 are connected into a whole, but the adjusting pieces 12 can be in opposite directions along the vertical direction, namely, the height of each adjusting piece 12 can be adjusted respectively, and the adjusting pieces cannot influence each other.
The specific implementation method of the invention is as follows:
installing the building model on the top of the adjusting piece at the center, and adjusting the height of the adjusting piece by screwing the screw 13 so that the bottom of the adjusting piece is level with the bottom surface of the experiment compartment 21, and the building model is completely positioned in the experiment compartment 21;
according to the actual surrounding terrain of the building, the rest adjusting pieces are partially surrounded by the building model by screwing the screw 13 to adjust the heights of the rest adjusting pieces so as to simulate the actual surrounding terrain of the building, and the building model is trapped in the surrounding adjusting pieces;
the motor 112 is utilized to rotate the test bed 11 so as to drive the building model to rotate, thereby wind tunnel test is carried out on the building model, the test result of the building is more fit with the actual situation in the mode, the deviation between the test result and the actual situation is small, and the accuracy is high.
The invention also provides a using method of the turntable structure for the wind tunnel test, which comprises the following steps:
providing a turntable structure, and mounting the turntable structure at the bottom of the experiment compartment 21;
providing a building model, mounting the building model on the top of the adjusting parts 12, adjusting the heights of the adjusting parts 12 so that the building model stretches into the experimental cabin, and covering part of the building model by the adjusting parts 12 to simulate the sinking topography of the building model;
the test stand 11 is rotated to drive the building model to rotate, thereby performing wind tunnel test on the building model.
The specific operation mode of the practical implementation of the using method provided by the invention is as follows:
installing the building model on the top of the adjusting piece at the center, and adjusting the height of the adjusting piece by screwing the screw 13 so that the bottom of the adjusting piece is level with the bottom surface of the experiment compartment 21, and the building model is completely positioned in the experiment compartment 21;
according to the actual surrounding terrain of the building, the rest adjusting pieces are partially surrounded by the building model by screwing the screw 13 to adjust the heights of the rest adjusting pieces so as to simulate the actual surrounding terrain of the building, and the building model is trapped in the surrounding adjusting pieces;
the test bed 11 is rotated by the motor 112 to drive the building model to rotate, so that wind tunnel test is performed on the building model.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (7)
1. A turntable structure for wind tunnel tests, the turntable structure being mounted in an experimental cabin of a wind tunnel, the turntable structure comprising:
the test bed is rotatably arranged at the bottom of the test cabin, the bottom of the test cabin is provided with a mounting hole, the mounting hole is circular, and the test bed is correspondingly arranged below the mounting hole; and
the height-adjustable test bench comprises a test bench, a plurality of adjusting pieces and a plurality of wind tunnel test bench, wherein the adjusting pieces are arranged at the top of the test bench in an adjustable mode, the adjusting pieces correspond to the mounting Kong Pinge and are round, the adjusting pieces are nine in number, one adjusting piece is arranged at the center of the test bench, eight adjusting pieces are arranged around the adjusting pieces at the center of the test bench, the adjusting pieces extend into the test cabin through mounting holes, the building model is arranged at the top of the adjusting pieces and the heights of the adjusting pieces are adjusted, so that the building model extends into the test cabin, the adjusting pieces cover part of the building model to simulate the sinking topography of the building model, and then the test bench is rotated to drive the building model to rotate, and accordingly wind tunnel test is conducted on the building model.
2. The turntable structure for wind tunnel test according to claim 1, further comprising a plurality of through holes corresponding to the adjusting piece and arranged on the test stand, a nut corresponding to the through holes and fixed on the test stand, and a screw threaded to the nut and penetrating through the through holes, wherein the adjusting piece is sleeved on the screw;
the height of the adjusting member is adjusted by screwing the screw to change the length of the portion of the screw above the test stand.
3. The turntable structure for wind tunnel test according to claim 1, further comprising a fence fixed to the bottom of the test chamber and enclosing the mounting hole, wherein the top surface of the test stand is attached to the bottom of the fence, and the plurality of adjusting members are located in the fence.
4. The turntable structure for wind tunnel test according to claim 1, wherein the adjusting member located at the center of the test stand has an octagonal shape.
5. The turntable structure for wind tunnel test according to claim 1, further comprising a clamping groove formed at a side portion of the adjusting member and vertically arranged, and a convex strip formed at a corresponding side portion of an adjacent adjusting member and matched with the clamping groove;
the convex strips are inserted into the clamping grooves, so that two adjacent adjusting pieces are connected with each other, and the two adjacent adjusting pieces can move relatively along the vertical direction.
6. The turntable structure for wind tunnel test according to claim 1, wherein the side of the building model is provided with a pressure measuring hole, and the pressure measuring hole is connected with a pressure measuring module through a pressure measuring hose;
the inside cavity of regulating part is formed with the accommodation space that supplies to place the pressure measurement module, the hole is seted up at the top of regulating part, supplies the pressure measurement hose passes.
7. A method of using the turntable structure for wind tunnel test as claimed in claim 1, comprising the steps of:
providing the turntable structure, and installing the turntable structure at the bottom of the experiment cabin;
providing a building model, mounting the building model on the top of the adjusting piece, and adjusting the heights of a plurality of adjusting pieces so that the building model stretches into the experimental cabin, and the plurality of adjusting pieces cover part of the building model to simulate the sinking topography of the building model;
and rotating the test bed to drive the building model to rotate, so as to perform wind tunnel test on the building model.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110125502.7A CN112945505B (en) | 2021-01-29 | 2021-01-29 | Turntable structure for wind tunnel test and application method thereof |
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| CN202110125502.7A CN112945505B (en) | 2021-01-29 | 2021-01-29 | Turntable structure for wind tunnel test and application method thereof |
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| CN112945505A CN112945505A (en) | 2021-06-11 |
| CN112945505B true CN112945505B (en) | 2023-06-09 |
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| CN113447233B (en) * | 2021-06-29 | 2023-04-07 | 哈尔滨工业大学 | Adjustable heat source test equipment for building heat supply and accumulated snow coupling experiment |
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| JP2018136129A (en) * | 2017-02-20 | 2018-08-30 | 大成建設株式会社 | Wind tunnel test equipment |
| CN109297669A (en) * | 2018-11-07 | 2019-02-01 | 中南大学 | Orographic winds field characteristic wind tunnel test test macro and test method |
| CN109307580A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | A kind of synchronization gas bullet-wind Tunnel Measuring Pressure Tests device considering aerodynamic interference effect |
| CN109459257A (en) * | 2018-11-13 | 2019-03-12 | 重庆大学 | Pilot system is influenced on building structure under a kind of wind fire coupling |
| CN208902376U (en) * | 2018-11-07 | 2019-05-24 | 中南大学 | Orographic winds field characteristic wind tunnel test test macro |
| CN110836760A (en) * | 2019-11-06 | 2020-02-25 | 南京航空航天大学 | Ship attitude dynamic simulation system for wind tunnel test and working method thereof |
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2021
- 2021-01-29 CN CN202110125502.7A patent/CN112945505B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018136129A (en) * | 2017-02-20 | 2018-08-30 | 大成建設株式会社 | Wind tunnel test equipment |
| CN109297669A (en) * | 2018-11-07 | 2019-02-01 | 中南大学 | Orographic winds field characteristic wind tunnel test test macro and test method |
| CN208902376U (en) * | 2018-11-07 | 2019-05-24 | 中南大学 | Orographic winds field characteristic wind tunnel test test macro |
| CN109459257A (en) * | 2018-11-13 | 2019-03-12 | 重庆大学 | Pilot system is influenced on building structure under a kind of wind fire coupling |
| CN109307580A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | A kind of synchronization gas bullet-wind Tunnel Measuring Pressure Tests device considering aerodynamic interference effect |
| CN110836760A (en) * | 2019-11-06 | 2020-02-25 | 南京航空航天大学 | Ship attitude dynamic simulation system for wind tunnel test and working method thereof |
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