CN205175659U - A wind -tunnel turbulent flow analogue means - Google Patents
A wind -tunnel turbulent flow analogue means Download PDFInfo
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- CN205175659U CN205175659U CN201520989570.8U CN201520989570U CN205175659U CN 205175659 U CN205175659 U CN 205175659U CN 201520989570 U CN201520989570 U CN 201520989570U CN 205175659 U CN205175659 U CN 205175659U
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Abstract
The utility model provides a wind -tunnel turbulent flow analogue means, includes air inlet, variable frequency speed governing(VFSG) fan array and shakes movable vane bars device, variable frequency speed governing(VFSG) fan array sets up in the wind -tunnel air inlet, and the movable vane bars device that shakes sets up in wind -tunnel feng chang upper reaches department. Through the variable frequency speed governing(VFSG) fan array of arranging array alignment at the wind -tunnel air inlet, arrange the movable vane bars device that shakes in wind -tunnel feng chang upper reaches department, through variable frequency speed governing(VFSG) fan array form with the wind to or the level to the wind speed of pulsation at random field, through the movable vane bars device that shakes form the beam wind to or the vertical wind speed of pulsation at random field, form simultaneously with the wind to with the beam wind to or the level to the pulsatory turbulent flow at random with vertical two -way combination, realize effective simulation of the wind environment that actual structure is located. The utility model discloses turbulent flow the environment of simulation can reach the turbulent similarity higher with the wind environment that actual structure locate, solves in the past the not enough of single -vane bars or the one -way turbulent field of single fan array simulation to simply effective, economic nature is good.
Description
Technical field
The utility model belongs to building and bridge structure Wind Engineering studying technological domain, relate to the wind-tunnel field of turbulent flow simulation of tall and slender structure, Loads of Long-span Bridges and large span spatial structure, in physics wind-tunnel simulation simultaneously down wind and beam wind to or level to the vertical turbulent performance producing random pulse.
Background technology
At present, tall and slender structure, greatly need dynamometry under physics wind-tunnel condition of tall and slender structure model, large span spatial structure model or Loads of Long-span Bridges Segment Model and full bridge aeroelastic model and vibration measuring test across flexible bridge structure and large span spatial structure in the design phase, be used to guide structural wind resistance design.In research process, more the simulation of wind-tunnel wind field adopts and utilizes roughness element, steeple etc. form the passive simulation method of required field of turbulent flow or use the active analogy method of device such as vibration latticed wing, frequency control array fan etc.But the former does not reach the turbulent similarity of experiment wind field and atmospheric boundary layer wind field to the simulation of turbulent flow; Though the latter can produce the higher turbulence level needed for experiment, but only can simulate the field of turbulent flow producing random pulse in one direction, simplify the multidirectional field of turbulent flow feature residing for practical structures, cause field of turbulent flow residing for experiment wind field and actual tall and slender structure, Longspan Bridge and space structure to differ greatly, according to such test findings, structural design is instructed to structure relatively danger or the waste economically that will cause designing.For the above-mentioned problems in the prior art, objectively need to research and develop new solution.
Utility model content
The purpose of this utility model is to provide a kind of latticed wing and array fan to combine the method and device initiatively carrying out flow field simulation, vibration latticed wing and frequency control array fan are combined, frequency control array fan is utilized to produce down wind or horizontal direction field of turbulent flow, utilize horizontally or the oscillating airfoil grid array of vertically arrangement produce corresponding experimental status under required beam wind to or vertical field of turbulent flow, solve single-blade grid or single array fan in the past and only can simulate the deficiency of unidirectional field of turbulent flow, make the wind field of laboratory wind tunnel simulation closer to actual tall and slender structure, Longspan Bridge or the wind field environment residing for large span spatial structure.
For achieving the above object, the technical solution of the utility model is:
A kind of wind-tunnel field of turbulent flow analogue means, comprises frequency control array fan and horizontal horizontal direction vibration latticed wing or vertically disposed vertical direction and vibrates latticed wing.Described frequency control array fan is arranged at wind-tunnel air intake opening, arranges oscillating airfoil grid array at wind-tunnel wind field upstream end.
Described active incoming flow analogue means comprises frequency control array fan and horizontal horizontal direction vibration latticed wing or vertically disposed vertical direction and vibrates latticed wing.
Adopt above-mentioned wind-tunnel field of turbulent flow analogue means, by arranging the frequency control fan group of arrayed at wind-tunnel air intake opening, arrange oscillating airfoil grid array at wind-tunnel wind field upstream end.Form down wind or horizontal direction random pulse wind speed field by frequency control array fan, down wind or level to the random pulse of wind speed by each variable-frequency fan ACTIVE CONTROL of array fan group.
By vibration latticed wing device formed beam wind to or vertical random pulse wind speed field.The latticed wing of incoming flow wind in vibration, additionally will produce the random pulse in the dull and stereotyped face, place of vertical latticed wing, namely beam wind to or vertical wind velocity fluctuation.Wherein, horizontal oscillating airfoil grid array vibrates in the horizontal direction, makes wind speed produce pulsation in the horizontal direction; Vertically disposed oscillating airfoil grid array in the vertical direction vibrates, wind speed in the vertical direction is made to produce pulsation, the direction of test required simulation field of turbulent flow is depended in the selection of level or vertically disposed oscillating airfoil grid array, and the fluctuating wind that oscillating airfoil grid array produces is all perpendicular to down wind or the horizontal direction fluctuating wind of array fan generation.
By frequency control array fan and vibration latticed wing device be combined to form simultaneously down wind and beam wind to or level to the field of turbulent flow with vertical pulsation, thus realize effective simulation of wind environment residing for practical structures.
Owing to adopting technique scheme, the beneficial effects of the utility model be by oscillating airfoil grid array and frequency control array fan formed simultaneously down wind and beam wind to or level to the field of turbulent flow with vertical pulsation, thus realize effective simulation of wind environment residing for practical structures, solve the deficiency of the unidirectional pulsed analog of wind field in the past.The utility model is simply effective, can reach the two-way pulsation effect of field of turbulent flow, have stronger practicality.
Accompanying drawing explanation
Fig. 1 is the utility model wind-tunnel field of turbulent flow analogue means embodiment 3 d effect graph (adopting vertically disposed vertical direction to vibrate latticed wing device).
Fig. 2 is the schematic diagram that vibration latticed wing forms pulsation.
In figure: 1 air intake opening; 2 frequency control array fans; 3 vertically disposed oscillating airfoil grid arrays; u
1upstream oscillating flow wind; u
2wake flow fluctuating wind; u
3the fluctuating wind in the dull and stereotyped face, place of the vertical latticed wing that vibration latticed wing produces; R (t) fan vibration angle.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
A kind of wind-tunnel field of turbulent flow analogue means, comprising: air intake opening 1, frequency control array fan 2, vertically disposed vertical direction vibration latticed wing 3.
Arrange the frequency control fan group 2 of arrayed at wind-tunnel air intake opening 1, arrange vertically disposed vibration latticed wing device 3 at wind-tunnel wind field upstream end; Particular location according to wind-tunnel size and and required simulation field of turbulent flow and determine.
By described vibration latticed wing device and frequency control array fan formed simultaneously in level to the field of turbulent flow with vertical pulsation, thus realize effective simulation of wind environment residing for practical structures.
Concrete, described vibration latticed wing device comprises horizontal or vertically disposed oscillating airfoil grid array.
In effect, horizontal vertical vibrating latticed wing array is identical with horizontal horizontal direction oscillating airfoil grid array.Itself being vertical when this latticed wing is laid, but vibrating in the horizontal direction, is also horizontal during formation array.
Adopt the utility model, a kind of wind-tunnel field of turbulent flow analogy method can be provided, arrange the frequency control fan group of arrayed at wind-tunnel air intake opening, arrange vibration latticed wing device at wind-tunnel wind field upstream end.Form down wind or horizontal direction random pulse wind speed field by frequency control array fan, down wind or level to the random pulse of wind speed by each variable-frequency fan ACTIVE CONTROL of array fan group.
By vibration latticed wing device formed beam wind to or vertical random pulse wind speed field.The latticed wing of incoming flow wind in vibration, additionally will produce the random pulse in the dull and stereotyped face, place of vertical latticed wing, namely beam wind to or vertical wind velocity fluctuation.Wherein, horizontal oscillating airfoil grid array makes wind speed produce pulsation in the horizontal direction, vertically disposed oscillating airfoil grid array makes wind speed in the vertical direction produce pulsation, the fluctuating wind that oscillating airfoil grid array produces is all perpendicular to down wind or the horizontal direction fluctuating wind of array fan generation, and the direction of test required simulation field of turbulent flow is depended in the selection of level or vertically disposed oscillating airfoil grid array.
By frequency control array fan and vibration latticed wing device be combined to form simultaneously down wind and beam wind to or level to the field of turbulent flow with vertical pulsation, thus realize effective simulation of wind environment residing for practical structures.
The latticed wing of incoming flow wind in vibration, will additionally produce the random pulse in the dull and stereotyped face, place of vertical latticed wing, and the direction of test required simulation field of turbulent flow is depended in the selection of horizontal oscillating airfoil grid array or vertically disposed oscillating airfoil grid array.
In other words, frequency control array fan and the combination of horizontal horizontal direction oscillating airfoil grid array produce down wind and beam wind to or level to the fluctuating wind field with vertical bi-directional combination, frequency control array fan and vertically disposed vertical direction oscillating airfoil grid array combination generation level are to the fluctuating wind field with vertical bi-directional combination.
As shown in Figure 2, incoming flow wind u
1through producing the wake flow u along incoming flow wind direction perpendicular to latticed wing vibration R (t) in incoming flow wind direction
2with the wake flow u in down-flowing incoming wind direction
3.
When studying the kind of wind, natural wind can be divided into good state wind and abnormal wind two class, abnormal bellows chamber draws together downburst, typhoon, wind spout etc., and the wind field realizing simulating in physics wind-tunnel belongs to the good state wind in nature wind.Along with the development of science and technology, researchist is no longer confined to good state wind to the simulation of wind, develops gradually to abnormal wind, expects by the fluctuating wind speed part to the especially abnormal wind of the simulation of abnormal wind, obtain the test findings of structural response under abnormal wind, the wind force proofing design for structure is instructed.Current physics wind-tunnel realizes the simulation of wind of good state wind and downburst by adjustment model and the relative angle of wind direction or the fixed position of adjustment model and direction, under both of these case, turbulent flow wind speed field stimulation is based on unidirectional, and existing physics wind-tunnel can meet the demands completely.And increase gradually along with structural flexibility, so that the increase to wind susceptibility, typhoon and the impact of wind spout on structure increasing, but in this case, fluctuating wind speed is based on multidirectional, unidirectional field of turbulent flow simulation is in the past obvious with field of turbulent flow difference residing for practical structures, the test findings adopting traditional analog method to obtain and practical structures response difference obvious, therefore the technical solution of the utility model proposes the method combinationally using frequency control array fan and oscillating airfoil grid array in wind-tunnel, carry out wind environment residing for practical structures, the i.e. simulation of two-way turbulent wind speed field.
Be fixed on the situation of wind-tunnel bottom base panel for test model in wind tunnel laboratory, frequency control array fan produces the unidirectional turbulent flow in direction, hole with the wind (usually correspond to the down wind of wind environment residing for practical structures or level to).The turbulent flow of other direction required when simulating actual wind environment is then provided by oscillating airfoil grid array.Specifically, for the side of tall and slender structure model and large-span space structure model, horizontal horizontal direction oscillating airfoil grid array can provide beam wind that turbulence level is higher to fluctuating wind; For the end face of bridge health test and diagnostics, full bridge aeroelastic model and large-span space structure, the vertical fluctuating wind that vertically disposed vertical direction vibration latticed wing can provide turbulence level higher.By the test simulation of simulated implementation structural model under special wind environment of two-way field of turbulent flow, thus for the contrast with actual conditions, and be further used for the guidance of flexible structure wind force proofing design.
The embodiment adopting vertically disposed vertical direction oscillating airfoil grid array is below only described, in the embodiment adopting horizontal horizontal direction vibration latticed wing device, only need oscillating airfoil grid array to be changed into vertically disposed vertical direction vibration latticed wing device, this does not repeat.
Above-mentioned is can understand for ease of those skilled in the art and apply the utility model to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the utility model is not limited to embodiment here, and those skilled in the art are according to announcement of the present utility model, and the improvement made for the utility model and amendment all should within protection domains of the present utility model.
Claims (5)
1. a wind-tunnel field of turbulent flow analogue means, is characterized in that: comprise air intake opening, frequency control array fan and vibration latticed wing device; Described frequency control array fan is arranged at wind-tunnel air intake opening, and described vibration latticed wing device is arranged at wind-tunnel wind field upstream end.
2. wind-tunnel field of turbulent flow analogue means according to claim 1, is characterized in that: described vibration latticed wing device comprises horizontal horizontal direction oscillating airfoil grid array or vertically disposed vertical motion latticed wing array.
3. wind-tunnel field of turbulent flow analogue means according to claim 1, is characterized in that: by arranging the frequency control array fan of arrayed at wind-tunnel air intake opening, arranges vibration latticed wing device at wind-tunnel wind field upstream end; Form down wind or horizontal direction random pulse wind speed field by frequency control array fan, by vibration latticed wing device formed beam wind to or vertical random pulse wind speed field; By the combination of frequency control array fan and vibration latticed wing device, formed simultaneously down wind and beam wind to or level to the field of turbulent flow of the random pulse with vertical bi-directional combination, thus realize effective simulation of wind environment residing for practical structures.
4. wind-tunnel field of turbulent flow analogue means according to claim 1, is characterized in that: down wind or level to the random pulse of wind speed by each variable-frequency fan ACTIVE CONTROL of array fan group.
5. wind-tunnel field of turbulent flow analogue means according to claim 1, is characterized in that: the latticed wing of incoming flow wind in vibration, additionally will produce the random pulse in the dull and stereotyped face, place of vertical latticed wing, namely beam wind to or vertical wind velocity fluctuation.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387991A (en) * | 2015-12-02 | 2016-03-09 | 同济大学 | Wind-tunnel turbulent flow field simulation method and device |
| CN106645552A (en) * | 2016-12-22 | 2017-05-10 | 公安部四川消防研究所 | Device for testing fireproof performance of external facade of building |
| CN107655656A (en) * | 2017-11-01 | 2018-02-02 | 广东电网有限责任公司电力科学研究院 | A kind of downburst analogue means |
| CN110006622A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | The physical simulating method and device that wave is coupled with mobile cyclone |
| CN110907117A (en) * | 2019-12-05 | 2020-03-24 | 重庆大学 | Wind tunnel test model for simulating structural aeroelastic and aerodynamic characteristics under action of torsional wind field in mountainous area |
| CN113239462A (en) * | 2021-05-25 | 2021-08-10 | 江苏普旭科技股份有限公司 | Simulation method for aircraft turbulent environment simulation |
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2015
- 2015-12-02 CN CN201520989570.8U patent/CN205175659U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387991A (en) * | 2015-12-02 | 2016-03-09 | 同济大学 | Wind-tunnel turbulent flow field simulation method and device |
| CN106645552A (en) * | 2016-12-22 | 2017-05-10 | 公安部四川消防研究所 | Device for testing fireproof performance of external facade of building |
| CN106645552B (en) * | 2016-12-22 | 2023-05-26 | 应急管理部四川消防研究所 | Building outer facade fire behavior test device |
| CN107655656A (en) * | 2017-11-01 | 2018-02-02 | 广东电网有限责任公司电力科学研究院 | A kind of downburst analogue means |
| CN110006622A (en) * | 2019-05-23 | 2019-07-12 | 重庆大学 | The physical simulating method and device that wave is coupled with mobile cyclone |
| CN110006622B (en) * | 2019-05-23 | 2024-05-14 | 重庆大学 | Physical simulation method and device for coupling wave and mobile tornado |
| CN110907117A (en) * | 2019-12-05 | 2020-03-24 | 重庆大学 | Wind tunnel test model for simulating structural aeroelastic and aerodynamic characteristics under action of torsional wind field in mountainous area |
| CN110907117B (en) * | 2019-12-05 | 2020-10-09 | 重庆大学 | Wind tunnel test model for simulating structural aeroelastic and aerodynamic characteristics under action of torsional wind field in mountainous area |
| CN113239462A (en) * | 2021-05-25 | 2021-08-10 | 江苏普旭科技股份有限公司 | Simulation method for aircraft turbulent environment simulation |
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