CN107202676B - Turbulent flow field simulation device for structural wind engineering test - Google Patents
Turbulent flow field simulation device for structural wind engineering test Download PDFInfo
- Publication number
- CN107202676B CN107202676B CN201710542761.3A CN201710542761A CN107202676B CN 107202676 B CN107202676 B CN 107202676B CN 201710542761 A CN201710542761 A CN 201710542761A CN 107202676 B CN107202676 B CN 107202676B
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- air
- base
- flow field
- outlet pipe
- turbulent flow
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- 238000004088 simulation Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 title claims abstract description 11
- 230000010349 pulsation Effects 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000011160 research Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- 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
- G01M9/08—Aerodynamic models
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention provides a turbulence field simulation device for a structural wind engineering test, which comprises a base, an air outlet pipe, an air cavity, an air inlet and an air pump, wherein the air outlet pipe is connected with the base; the air cavity is arranged in the base; the air outlet pipe is connected with the air cavity and the outer side of the base; the air pump is connected with the air inlet, and the air inlet is connected with the air cavity; the test model is arranged on the base. The invention simulates the turbulent flow field by using a certain air flow which bulges out from the bottom surface under the incoming flow field, thereby realizing the effective simulation of the wind field where the actual engineering structure is positioned, being capable of simply and effectively simulating the bidirectional pulsating turbulent flow field, having flexible form and wide applicability and being capable of being effectively supplemented as the prior art scheme.
Description
Technical Field
The invention belongs to the field of structural engineering, and relates to turbulent flow field simulation for research of high-rise structures, large-span bridges and large-span space structures. In engineering structure wind engineering research, a turbulent wind field with random pulsation can be generated in the downwind direction and the crosswind direction simultaneously by expanding airflow with a certain inclination angle on the bottom surface under an incoming flow field and superposing the airflow with the incoming flow field above the airflow.
Background
Most of the flow in the nature is turbulent flow, so that a turbulent flow field is truly simulated in wind engineering research of an engineering structure. At present, a test model of a high-rise structure, a large-span bridge and a large-span space need to be placed in an artificial wind field for a force measurement test and a vibration measurement test in a design stage. In wind engineering research experiments, the wind tunnel turbulence field simulation method mainly comprises the following steps: a passive simulation method of arranging rough elements, pointed towers and the like at the upstream of an incoming flow field and an active simulation method of practical vibrating grid arrays and other devices are adopted; the former passive simulation method cannot simulate turbulence in nature accurately enough and has the defect of large occupied area; the latter active simulation method adopts a complex structure and is difficult to assemble and disassemble, and a new turbulence field simulation method is needed for overcoming the defects of the existing turbulence field simulation method.
Disclosure of Invention
The invention aims to provide a device for simulating a turbulent flow field by utilizing airflow with a bottom surface bulged at a certain angle under an incoming flow field. According to the invention, a required turbulent flow field can be simulated according to actual needs, so that the turbulent flow field is more similar to the wind field environment of an actual high-rise structure, a large-span bridge or a large-span space.
In order to achieve the above purpose, the invention adopts the following technical scheme: a turbulent flow field simulation device for a structural wind engineering test comprises a base, an air outlet pipe, an air cavity, an air inlet and an air pump; the air cavity is arranged in the base; the air outlet pipe is connected with the air cavity and the outer side of the base; the air pump is connected with the air inlet, and the air inlet is connected with the air cavity; the test model is arranged on the base.
Further, the air outlet pipe is provided with a plurality of rows, and the inclination angle of the air outlet pipe in the air cavity is adjustable.
Further, the air inlets are provided with a plurality of air inlets, and each air inlet is connected with an air pump.
The invention has the beneficial effects that: the invention simulates the turbulent flow field by using a certain air flow which bulges out from the bottom surface under the incoming flow field, thereby realizing the effective simulation of the wind field where the actual engineering structure is positioned, being capable of simply and effectively simulating the bidirectional pulsating turbulent flow field, having flexible form and wide applicability and being capable of being effectively supplemented as the prior art scheme.
Drawings
FIG. 1 illustrates a turbulence field simulation apparatus;
FIG. 2 is a front view of a turbulence field simulation apparatus;
FIG. 3 is a top view of a turbulence field simulation apparatus.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The invention relates to a turbulent flow field simulation device for a structural wind engineering test, which simulates a turbulent flow field by utilizing airflow with a bottom surface bulged to a certain angle under an incoming flow field.
As shown in fig. 1-3, the device comprises an air outlet pipe 1, an air cavity 2, an air inlet 3, an air pump 4, a structural model 5 and a base 6, wherein the air cavity 2 is arranged in the base 6, and the air outlet pipe 1 arranged on the base 6 communicates the air cavity 2 with the outer space of the base 6. An air inlet 3 is connected to the air cavity 2 inside the base 6, the air inlet 3 is connected with an air pump 4, and the air pump 4 is arranged inside the base 6.
According to the requirement of the actual turbulent flow field, different numbers of air pumps 4, air inlets 3 and air outlet pipes 1 are arranged, and the inclination angle of the air outlet pipes 1 in the air cavity 2 can be adjusted. The adjustable air outlet pipe 1 enables the sprayed air flow and the incoming flow field to form a certain included angle, so that the sprayed air flow and the incoming flow are overlapped, and the required random pulsating turbulence wind field can be simulated in the downwind direction and the crosswind direction, thereby realizing effective simulation of the wind field where the actual engineering structure is located.
In order to better simulate an actual engineering structure, the invention adopts a structural model to replace the actual engineering structure for simulation. An alternative structural model 5 is provided on the outer surface of the base 6.
In the invention, the air pump 4 externally connected with the air inlet 3 can continuously work and also can work in a variable frequency mode, so that the air flow sprayed out of the air outlet pipe 1 has continuity or pulsation.
Claims (1)
1. A turbulent flow field simulation device for structural wind engineering test, which is characterized in that: the air inlet is arranged on the base, and the air outlet pipe is communicated with the outer space of the base; an air cavity in the base is connected with an air inlet, the air inlet is connected with an air pump, and the air pump is arranged in the base; according to the requirements of an actual turbulent flow field, different numbers of air pumps, air inlets and air outlet pipes are arranged, and the inclination angle of the air outlet pipes in the air cavity can be adjusted; the adjustable air outlet pipe enables the sprayed air flow and the incoming flow field to form a certain included angle, enables the sprayed air flow and the incoming flow to be overlapped, and simulates a required random pulsating turbulence wind field in the downwind direction and the crosswind direction; the structural model is arranged on the outer surface of the base; the air pumps externally connected with the air inlets can work continuously or in variable frequency, so that the air flow sprayed out of the air outlet pipe has continuity or pulsation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542761.3A CN107202676B (en) | 2017-07-05 | 2017-07-05 | Turbulent flow field simulation device for structural wind engineering test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710542761.3A CN107202676B (en) | 2017-07-05 | 2017-07-05 | Turbulent flow field simulation device for structural wind engineering test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107202676A CN107202676A (en) | 2017-09-26 |
| CN107202676B true CN107202676B (en) | 2024-02-20 |
Family
ID=59910587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710542761.3A Active CN107202676B (en) | 2017-07-05 | 2017-07-05 | Turbulent flow field simulation device for structural wind engineering test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107202676B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116337396B (en) * | 2023-05-30 | 2023-07-21 | 中国航空工业集团公司哈尔滨空气动力研究所 | Method for actively simulating wind tunnel test by using high-altitude atmospheric turbulence |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000162088A (en) * | 1998-11-30 | 2000-06-16 | Mitsubishi Heavy Ind Ltd | Wind tunnel apparatus |
| CN106568082A (en) * | 2016-11-02 | 2017-04-19 | 西安交通大学 | Turbulent air distribution combustor of heating furnace |
| CN206292029U (en) * | 2016-12-19 | 2017-06-30 | 成都伟特自动化工程有限公司 | For the wall jet device of wind tunnel test |
-
2017
- 2017-07-05 CN CN201710542761.3A patent/CN107202676B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000162088A (en) * | 1998-11-30 | 2000-06-16 | Mitsubishi Heavy Ind Ltd | Wind tunnel apparatus |
| CN106568082A (en) * | 2016-11-02 | 2017-04-19 | 西安交通大学 | Turbulent air distribution combustor of heating furnace |
| CN206292029U (en) * | 2016-12-19 | 2017-06-30 | 成都伟特自动化工程有限公司 | For the wall jet device of wind tunnel test |
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| Publication number | Publication date |
|---|---|
| CN107202676A (en) | 2017-09-26 |
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