Turbulent flow field simulation device for structural wind engineering test

Abstract

The invention provides a turbulent flow field simulation device for a structural wind engineering test. The turbulent flow field simulation device for the structural wind engineering test comprises a base, a gas outlet pipe, a gas cavity, a gas inlet and a gas pump; the gas cavity is arranged in the base; the gas outlet pipe is connected with the gas cavity and the outer side of the base; the gas pump is connected with the gas inlet; the gas inlet is connected with the gas cavity; and a test model is arranged on the base. A turbulent flow field is simulated by blasting gas flow on the lower surface of an incoming flow field, so that effective simulation of the wind field of the actual engineering structure is realized, a double-way pulsating turbulent flow field can be simulated simply and effectively, and the device is flexible in form and high in applicability and can serve as effective supplementation of the existing technical scheme.

Description

technical field [0001] The invention belongs to the field of structural engineering and relates to turbulent flow field simulation for the research of towering structures, long-span bridges and long-span space structures. In the wind engineering research of engineering structures, by blowing out the airflow with a certain oblique angle on the bottom surface of the incoming flow field, and superimposing it with the incoming flow field above it, a randomly fluctuating turbulent wind field can be generated simultaneously in the downwind direction and across the wind direction. Background technique [0002] Most of the flow in nature is turbulent flow, so the turbulent flow field must be truly simulated in the wind engineering research of engineering structures. At present, in the design stage of high-rise structures, long-span bridges and large-span spaces, the test models of the corresponding structures need to be placed in the artificial wind field for force test and vibratio...

AI Technical Summary

Problems solved by technology

In wind engineering research experiments, the simulation methods of wind tunnel turbulent flow field mainly include: the passive simulation method of arranging rough elements and spires in the upstream of the incoming flow field, and the active simulation method of practical vibration grid array and other devices; the former's The passive simulation method cannot simulate the turbulent flow in nature accurately enough, and has the disadvantage of occupying a large area; the device used in the latter active simulation method has a complex structure and is difficult to disassemble. Insufficient method, a new turbulent field simulation method is needed

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