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A Downburst Simulation Method

A simulation method and airflow technology, applied in the field of downburst simulation, can solve the problem that the simulation device cannot achieve gust simulation, and achieve the effects of reducing the risk of swinging, enhancing safety, and expanding the test range.

Active Publication Date: 2020-01-31
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a downburst simulation method and its device, which achieves two purposes on the basis of the current technology: firstly, it solves the safety problem of the current simulation device; secondly, it solves the problem that the current simulation device cannot realize gust simulation

Method used

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Examples

Experimental program
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Embodiment 1

[0027] Such as image 3 As shown, it is a schematic diagram of an implementation structure of the present invention, which mainly includes: a downflow simulation section, a mobile platform, a support frame, a belt drive system, a test platform, and related electrical control systems.

[0028] The support frame is an all-steel structure, including: columns, beams, and track beams; the columns and beams are all 300 square steel, the roots of the columns are buried in reinforced concrete foundations, and the track beams are made of 300 I-beams; the belt drive system is installed on the support frame On, including: belt conveyor, belt. The mobile platform is connected with the support frame, including: I-beams and hub parts. The electric drum drives the wire belt to realize the X-direction movement of the platform, and the maximum speed is above 2m / s. The front end of the platform is equipped with a horizontal position adjustment electric ball screw pair, which can drive the dow...

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Abstract

The invention discloses a downburst simulation method. The airflow direction of horizontal incoming air is changed by a diversion piece, the diversion piece can be constantly switched between a vertical state and a horizontal state by control, the horizontal airflow is blown out from a lower end in a longitudinal direction when the diversion piece is in the vertical state, and the horizontal airflow is blown out from an opposite end of a horizontal air inlet. By the downburst simulation method, a large amount of contact surface of the whole simulation device can be fixedly connected with a moving platform, the risk that the simulation device swings during the moving process of the moving platform is reduced, simulation of the simulation device during the moving process can be achieved, andthe safety of equipment is improved.

Description

technical field [0001] The invention relates to the field of meteorological simulation wind tunnel tests, in particular to a downburst simulation method. Background technique [0002] Downburst is a common severe convective special weather. It is a strong low-level wind shear caused by the strong downdraft in thunderstorm clouds violently hitting the ground and diverging along the surface. Its flow field has some characteristics of wall jets. Downburst is a very sudden and destructive strong wind in thunderstorm weather; when a downburst occurs, it is accompanied by extremely strong downdraft and low-altitude wind shear, causing serious damage to buildings and transportation facilities. Lead to huge economic losses and casualties. In order to reduce the harm of downburst, it is necessary to conduct wind tunnel simulation tests to study the wind load characteristics of different physical models in the downburst environment. The currently used physical (or experimental) simu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/04
CPCG01M9/04
Inventor 黄汉杰李士伟严剑锋汪之松赵亮亮晏致涛朱本华沈志洪杨屹东
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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