CN101377447B - Rough element apparatus with variable rotary-out type wind tunnel - Google Patents
Rough element apparatus with variable rotary-out type wind tunnel Download PDFInfo
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- CN101377447B CN101377447B CN2008101199515A CN200810119951A CN101377447B CN 101377447 B CN101377447 B CN 101377447B CN 2008101199515 A CN2008101199515 A CN 2008101199515A CN 200810119951 A CN200810119951 A CN 200810119951A CN 101377447 B CN101377447 B CN 101377447B
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Abstract
The invention provides a back-out type wind tunnel changeable rough element device, comprising four main units of a plurality of rough elements, a hole opening flat plate, a lower flat plate (or a frame) and a hinge. The device is characterized in that the shape of the rough element is a quarter cylindrical section. One straight edge of the rough element is hinged on the hole opening flat plate, and the other straight edge is hinged on the lower flat plate (or the frame) which is arranged under the hole opening flat plate and is parallel with the hole opening flat plate. The hole opening flat plate and the bottom plate of the wind tunnel are trimly fixedly installed, ensuring that the rough element can back out from the upper surface of the hole opening plate through moving the lower flat plate (or the frame) to one direction. The back-out amount of the rough element can be controlled through changing the moving amount of the lower flat plate, with the result that the roughness of the whole hole opening plate can be changed, and varieties of near surface air currents which simulate atmospheric boundary layer are formed in the wind tunnel. The device can realize the stepless regulation to the height of the rough element simply and quickly.
Description
Technical field
The present invention relates to a kind of rough element apparatus with variable rotary-out type wind tunnel, belong to the experimental aerodynamics field.
Background technology
When carrying out the wind tunnel experimental research of subjects such as Wind Engineering and environmental fluid mechanics, need form the simulation of atmospheric boundary layer air-flow of certain type in wind-tunnel, usual way is wedge (tower) and the roughness element that suitable type is placed in a certain position in wind-tunnel.Roughness element is the block that is distributed on the plane, mostly be rectangular parallelepiped, type according to the simulation of atmospheric boundary layer that will form, the size of roughness element and distribution density will be done corresponding adjustment, roughness element for rectangular parallelepiped, usually regulate its height and distribution density, perhaps only regulate its height and just can reach requirement.In existing wind tunnel experimental research, in order to form suitable simulation of atmospheric boundary layer, need carry out height to dissimilar roughness element and distribution density is regulated or changed according to actual conditions, implement to take time and effort.The invention provides a kind of rough element apparatus with variable rotary-out type wind tunnel, it can realize the step-less adjustment of roughness element height quickly and easily.
Summary of the invention
In order to overcome the deficiency of prior art said structure, the invention provides a kind of rough element apparatus with variable rotary-out type wind tunnel, this device is realized the step-less adjustment of roughness element height quickly and easily.The technical solution adopted for the present invention to solve the technical problems is:
A kind of rough element apparatus with variable rotary-out type wind tunnel, it comprises: a plurality of roughness element, plate with opening, down dull and stereotyped (or framework) and four critical pieces of hinge.Described roughness element is shaped as the quadrant shell of column, this cylindrical section uses multiple materials such as timber, aluminium, stainless steel to make, in order to alleviate the weight of described roughness element, it can be made quadrant shell of column housing, the spacing of its size (radius R and width B) and roughness element is determined according to tunnel size, wind speed and testing requirements by the wind tunnel test expert; Described plate with opening is made with plank, plastic plate, aluminium sheet or steel plate materials, and perforate is a rectangular opening, and its width is for being slightly larger than the cylindrical section width B, and length is for being slightly larger than the cylindrical section radius R, so that roughness element precession and back-out neatly.The connected mode of described rough element apparatus with variable rotary-out type wind tunnel is as follows:
Described plate with opening and the concordant fixed installation of wind-tunnel base plate; A straight flange of described roughness element is hinged on the described plate with opening, and another straight flange is hinged on and places under the plate with opening and on the following flat board (or framework) parallel with this plate with opening; The Connection Element of two straight flanges of described roughness element is the hinge of metal hinge or special processing, and its connected mode is an articulated manner; Described plate with opening and the concordant fixed installation of wind-tunnel base plate; Described down dull and stereotyped (or framework) can move to a direction, thereby roughness element is screwed out from the perforate plane, and the back-out amount of described roughness element has determined the roughness of whole plate with opening.
This device is by changing the back-out amount that dull and stereotyped down amount of movement changes roughness element, thereby change the roughness of whole perforated panel, will form the air-flow of all kinds of simulation of atmospheric boundary layer in wind-tunnel, this air-flow has suitable turbulivity, mean wind speed section and other turbulence characteristic.
The invention has the beneficial effects as follows: the present invention controls the back-out amount of roughness element by changing dull and stereotyped down amount of movement, thereby changes the roughness of whole perforated panel, has greatly reduced the workload that the ground roughness element is installed in wind-tunnel usually.
Description of drawings
Fig. 1 is that wherein, R is the roughness element radius according to variable rotary-out type wind tunnel roughness element monomer structure synoptic diagram of the present invention, and B is the roughness element width;
Fig. 2 is that wherein, 2a is a front view according to variable rotary-out type wind tunnel roughness element monomer structure three-view drawing of the present invention, and 2b is a vertical view, and 2c is a side view;
Fig. 3 is according to variable rotary-out type wind tunnel roughness element assembling synoptic diagram of the present invention, wherein, 1 is the roughness element monomer roughness element of quadrant shell of column, 2 is perforated panel, 3 times flat boards, 4 hinges, the moving direction that the arrow indication is dull and stereotyped down, this direction also is airflow direction usually in wind-tunnel, but also can be contrary airflow direction;
Fig. 4 is each roughness element distribution schematic diagram in the rough element apparatus with variable rotary-out type wind tunnel (four rows only draws), and wherein, R is the roughness element radius, and B is the roughness element width; L is a line-spacing, and S is the row distance; When roughness element is installed in the wind-tunnel, column direction and wind-tunnel parallel axes.
Embodiment
The present invention is further described below in conjunction with the drawings and specific embodiments:
Embodiment 1: the size of roughness element such as Fig. 1, Fig. 2 and shown in Figure 4, and wherein, radius is R, width is B, design the distribution plan of roughness element by requirement of experiment, and processing and fabricating goes out satisfactory a plurality of roughness element; Processing perforated panel and following dull and stereotyped (or framework) they are processing and easy for installation, whole rotary-out type rough element apparatus with variable sectional processing, and butt joint is got up then.Fig. 4 is roughness element distribution schematic diagram (four rows only draw) in the rough element apparatus with variable rotary-out type wind tunnel, and wherein, R is the roughness element radius, and B is the roughness element width; L is a line-spacing, and S is the row distance; When roughness element is installed in the wind-tunnel, its column direction and wind-tunnel parallel axes.
Embodiment 2: Fig. 3 is according to variable rotary-out type wind tunnel roughness element assembling synoptic diagram of the present invention, wherein, 1 is the monomer roughness element, 2 is perforated panel, 3 times flat boards, 4 is hinge, the moving direction that the arrow indication is dull and stereotyped down, this direction also is airflow direction usually in wind-tunnel, but also can be contrary airflow direction.As shown in Figure 3, this device is made up of a plurality of roughness element, plate with opening, following dull and stereotyped (or framework) and four critical pieces of hinge.Roughness element is shaped as the quadrant shell of column, and this cylindrical section is made with multiple materials such as timber, aluminium, stainless steels.Roughness element is made quadrant shell of column housing, purpose is in order to alleviate the weight of each roughness element, wherein, size of each roughness element (radius R, width B) and spacing are determined according to factors such as this tunnel size, wind speed range and experimental subjectss by each wind tunnel experiment expert.Roughness element is connected roughness element on perforated panel and following dull and stereotyped (or framework) in hinged way by hinge, wherein, a straight flange of roughness element is hinged on the plate with opening, another straight flange is hinged on one and places on the following flat board (or framework) parallel with it under the plate with opening, and Connection Element is the hinge of metal hinge or special processing; Plate with opening and the concordant fixed installation of wind-tunnel base plate, and the wind-tunnel base plate is the intrinsic parts of wind-tunnel, is the component part of test chamber bottom, following dull and stereotyped (or framework) can move to a direction, thereby roughness element is screwed out from the perforate plane; By changing dull and stereotyped down amount of movement, just can control the back-out amount of roughness element, thereby change the roughness of whole perforated panel, in wind-tunnel, just can form the air-flow of all kinds of simulation of atmospheric boundary layer.
Claims (4)
1. a rough element apparatus with variable rotary-out type wind tunnel is characterized in that: comprise a plurality of roughness element, plate with opening, following flat board or framework and four critical pieces of hinge; Described roughness element is shaped as the quadrant shell of column, a straight flange of described roughness element is hinged on the plate with opening, another straight flange is hinged on one and places under the plate with opening and on the following flat board or framework parallel with this plate with opening, two straight flanges of described roughness element are respectively with plate with opening, down the Connection Element of flat board or framework is the hinge of metal hinge or special processing, and its connected mode is an articulated manner; Described plate with opening moves to a direction with the concordant fixed installation of wind-tunnel base plate, following flat board or framework, thereby roughness element is screwed out from the perforate plane; Described perforate is a rectangular opening, and its width is for being slightly larger than the cylindrical section width B, and length is for being slightly larger than the cylindrical section radius R.
2. a kind of rough element apparatus with variable rotary-out type wind tunnel according to claim 1 is characterized in that: described cylindrical section uses timber, duroplasts, aluminium or stainless steel material to make; For weight reduction, described roughness element is made quadrant shell of column housing, the spacing of the radius R of described roughness element, width B and roughness element is all determined according to tunnel size, wind speed and testing requirements.
3. a kind of rough element apparatus with variable rotary-out type wind tunnel according to claim 1 is characterized in that: described plate with opening is made with plank, plastic plate, aluminium sheet or steel plate materials.
4. a kind of rough element apparatus with variable rotary-out type wind tunnel according to claim 1, it is characterized in that, described device is controlled the back-out amount of roughness element by changing described dull and stereotyped down amount of movement, thereby change the roughness of whole plate with opening, so that in wind-tunnel, form the subaerial turbulivity of all kinds of simulation of atmospheric boundary layer and the air-flow of mean velocity profile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101199515A CN101377447B (en) | 2008-09-12 | 2008-09-12 | Rough element apparatus with variable rotary-out type wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101199515A CN101377447B (en) | 2008-09-12 | 2008-09-12 | Rough element apparatus with variable rotary-out type wind tunnel |
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| Publication Number | Publication Date |
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| CN101377447A CN101377447A (en) | 2009-03-04 |
| CN101377447B true CN101377447B (en) | 2010-08-25 |
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| CN2008101199515A Expired - Fee Related CN101377447B (en) | 2008-09-12 | 2008-09-12 | Rough element apparatus with variable rotary-out type wind tunnel |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053003B (en) * | 2009-10-28 | 2012-07-18 | 北京航空航天大学 | Multifunctional sand dust environment simulation device with changeable test section |
| CN105675247B (en) * | 2016-01-29 | 2018-05-11 | 哈尔滨工业大学深圳研究生院 | A kind of passive-type rotation roughness element and application method for realizing turbulivity quantified controlling |
| CN105675248B (en) * | 2016-01-29 | 2018-05-11 | 哈尔滨工业大学深圳研究生院 | A kind of active rotation roughness element and application method for realizing turbulivity quantified controlling |
| CN105910790B (en) * | 2016-04-12 | 2018-05-15 | 哈尔滨工业大学深圳研究生院 | A kind of autoexcitation formula disturbance roughness element and the method for increasing turbulence intensity |
| CN105890865B (en) * | 2016-06-12 | 2018-08-07 | 哈尔滨工业大学深圳研究生院 | A kind of adjustable wedge roughness element combined system obtaining incoming wind needed for experiment |
| CN106840596A (en) * | 2016-11-24 | 2017-06-13 | 中国空气动力研究与发展中心高速空气动力研究所 | One kind is applied to Asia across supersonic Cavity Flow model in wind tunnel |
| CN109827744A (en) * | 2019-04-02 | 2019-05-31 | 重庆科技学院 | Wind tunnel test flow-disturbing wedge |
| CN112504621B (en) * | 2020-11-26 | 2023-03-10 | 哈尔滨工业大学（深圳） | Wedge device with continuously adjustable blocking ratio |
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2008
- 2008-09-12 CN CN2008101199515A patent/CN101377447B/en not_active Expired - Fee Related
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| CN101377447A (en) | 2009-03-04 |
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Granted publication date: 20100825 Termination date: 20130912 |