A downdraft simulation device and a three-dimensional flow display method

By combining an atmospheric boundary layer wind tunnel and a grid-patterned optical component, the problem of simulating and displaying wind profiles in downburst simulation devices was solved, enabling visualization of three-dimensional flow and research on flow characteristics, and providing experimental evidence for wind load effects on structures.

CN116519260BActive Publication Date: 2026-07-21KUNMING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Filing Date
2023-05-25
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing downburst simulation devices are difficult to implement large-scale and moving studies, and traditional flow display technologies cannot meet the complex three-dimensional flow display requirements of downbursts, resulting in discrepancies between simulated wind profiles and actual wind profiles, making it impossible to effectively study the flow characteristics around structures.

Method used

An atmospheric boundary layer wind tunnel is used in conjunction with a downburst generator, a particle generator, a grid light assembly, and an industrial camera. The optimal wind profile position is determined by fitting an empirical model, and three-dimensional flow display is achieved using the grid light assembly and particle display technology.

Benefits of technology

The simulation of wind profiles that are consistent with empirical models and measured data has been achieved, and the problem of complex three-dimensional flow display of downbursts has been solved, providing experimental basis for the study of flow characteristics around structures.

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Abstract

The present application relates to a kind of downburst simulation device and three-dimensional flow display method, belong to experimental fluid mechanics technical field.The present application includes atmospheric boundary layer wind tunnel, downburst generator, support frame, grid sheet light component, particle generator, industrial camera.First, the wind profile model of any position is obtained by atmospheric boundary layer wind tunnel and downburst generator test, the best wind profile position is determined, then the grid sheet light component is arranged on the support frame guide rail of the best wind profile position, the grid sheet light component is shaped into cross sheet light by single cross power prism, and a plurality of power prisms are arranged in diagonal line to obtain grid sheet light, and grid sheet light is provided for experimental area, finally, the tracer particle emitted by upstream particle generator moves to grid sheet light area along airflow, and the complex three-dimensional flow display of downburst is recorded by industrial camera.The present application solves the wind profile simulation of any position of downburst and the difficult problem of such complex three-dimensional flow display.
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