Wind-tunnel modelling device for sandstorm entironment and engineering

A simulation device and wind tunnel technology, which is applied in the field of large-scale opening direct-flow blowing sandstorm environment and engineering wind tunnel simulation device, and can solve the problem that the wind and sand environment research cannot be satisfied.

Inactive Publication Date: 2009-04-01
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking a comprehensive look at the functions and main research directions of domestic and foreign laboratories dedicated to wind and sand environment research, there is currently no laboratory specializing in wind and sand environment engineering technology, especially the combination of wind tunnel for wind and sand environment engineering and field wind and sand comprehensive observation test field for effective technology development and integration
At the same time, the existing small and medium-sized wind tunnels dedicated to the study of wind-sand environment have a maximum boundary layer thickness of no more than 18 cm, which cannot meet the needs of the current study of wind-sand environment, especially large-scale wind-sand engineering.

Method used

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  • Wind-tunnel modelling device for sandstorm entironment and engineering
  • Wind-tunnel modelling device for sandstorm entironment and engineering
  • Wind-tunnel modelling device for sandstorm entironment and engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] For the basic research on sandstorm physics, it can involve the law of sand or dust transport, the formation mechanism of wind and sand landforms, etc. Here, the following measures can be taken for the transport of sand or sand dust:

[0056] 1. At the 10m downwind direction of the entrance of the test section 10, lay a sand layer 8m long and about 5cm thick;

[0057] 2. Fix the wind-sand flow wind field data acquisition system at the sand layer of the wind tunnel test section 10, and measure the average wind speed of the sand-carrying wind at different heights;

[0058] 3. Lay a fixed sand collection system at the end of the sand layer in the wind tunnel test section 10, and measure the sand transport volume of the sand-carrying wind;

[0059] 4. Set up a digital particle image velocimetry system (PIV) or high-speed stroboscopic photography and electronic pressure scanning valve necessary supporting equipment at a suitable position in the wind tunnel test section 10 to...

Embodiment 2

[0064] For soil wind erosion, the following measures can be taken:

[0065] 1. According to the size of the wind erosion test tank in the wind tunnel test section: 1.5m long x 0.5m wide, prepare the soil wind erosion model;

[0066] 2. Place the soil wind erosion model in the wind erosion test tank of the wind tunnel test section;

[0067] 3. Fix the wind and sand flow wind field data acquisition system at the sand layer of the wind tunnel test section to measure the average wind speed of the sand-carrying wind at different heights;

[0068] 4. Use the soil wind erosion balance to weigh the soil wind erosion model, and then start the wind tunnel motor and wind sand flow wind field data acquisition system;

[0069] 5. After a certain period of time, stop the wind tunnel motor, and weigh the soil wind erosion model after blowing erosion;

[0070] 6. Analyze the average wind speed data of sand-carrying wind at different heights obtained by the sand flow wind field data acquisit...

Embodiment 3

[0072] For wind and sand engineering research, the following measures can be taken:

[0073] 1. According to the actual situation, according to a certain proportion, make a similar model of the wind and sand project;

[0074] 2. Transfer the similar model of wind and sand engineering to the turntable on the wind tunnel test section through the three-dimensional moving measuring instrument and the sand supply system;

[0075] 3. Fix the sand flow wind field data acquisition system on the wind direction edge of the wind sand engineering similar model, and measure the axial wind speed profile of the test section;

[0076] 4. Set up the digital particle image velocimetry system (PIV, electronic pressure scanning valve) in the appropriate position of the wind tunnel test section, and measure the flow field of each part of the similar model of the wind and sand project;

[0077] 5. Start the wind tunnel motor, wind and sand flow wind field data acquisition system, PIV, electronic p...

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Abstract

The invention discloses a wind sand environment and engineering wind tunnel simulation device, in particular to a large opening direct-flow air blowing typed wind sand environment and engineering wind tunnel simulation device which is specially used for simulating wind sand movement and sand control engineering; the wind sand environment and engineering wind tunnel simulation device comprises a tunnel body which comprises an air inlet section (3), a transition section (4), a damp part with a damper (5), a first diffuser (6), a stabilization section (7), a contraction section (8), a speed vehicle (9), a testing section (10) and a second diffuser (11) which are sequentially connected one after another; and the power system is connected with the air inlet section (3) and is used for providing the power for the wind tunnel by a DC motor. The wind sand environment and engineering wind tunnel simulation device can truly simulate the wind sand control, thus pushing the wind sand control technique to go ahead; furthermore, the wind sand environment and engineering wind tunnel simulation device can carry out the test for preventing the diffusion of contamination and the test for the building dynamics characteristic and the like.

Description

technical field [0001] The invention relates to a large opening direct-flow blowing sand blowing environment and engineering wind tunnel simulation device specially used for simulating wind and sand movement and sand prevention and sand control projects. Background technique [0002] my country is one of the countries most seriously affected by wind and sand in the world, and the annual direct loss caused by wind and sand is as high as 54 billion yuan. Wind and sand disasters have seriously endangered people's lives, restricted the coordinated development of the social economy, and become a serious problem for the Chinese nation. According to incomplete statistics, about 10 million mu of arable land, 1.58 billion mu of grassland, 1.5 million mu of woodland and shrub grassland have been degraded due to wind and sand disasters. 47 large and medium-sized cities, 172 counties, more than 24,000 villages, and 1,400 kilometers of railway , 30,000 kilometers of roads and more than ...

Claims

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Application Information

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IPC IPC(8): G01M9/00G01M9/02G01M9/08
Inventor 张茂栓邹学勇张春来程宏
Owner BEIJING NORMAL UNIVERSITY
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