CFD numerical simulation-based optimization method for a double-sub-building wind environment

Abstract

The invention discloses a CFD numerical simulation-based optimization method for a double-sub-building wind environment, which comprises the following steps of obtaining the local winter and summer monsoon wind direction and average wind speed data according to the outdoor meteorological parameters and the local meteorological data in civil building heating ventilation and air conditioning designspecifications; establishing a double-sub-building initial model in CFD software, setting the simulation working conditions by data, and establishing a comparison model by adjusting the plane shape, the height, the spacing, the included angle, the relative position and the like of a main building; performing wind environment simulation in CFD software to obtain a distribution condition of a wind environment and a wind speed ratio at a pedestrian height around the double-sub-building; and comparing the simulation results, and selecting an optimal double-sub-building plane layout form under thecondition that the wind environment evaluation standard in the green building evaluation standard is met. According to the invention, the creation of a proper and comfortable wind environment around the double-sub-building is facilitated, and the wind environment around the double-sub-building is optimized by adjusting the planar layout and the planning of the double-sub-building.

Description

technical field [0001] The invention belongs to the technical field of buildings, and relates to a method for optimizing the building wind environment of twin towers based on CFD numerical simulation. Background technique [0002] With the development of society and the acceleration of urbanization, under the current limited land resource conditions, subject to the realistic constraints of land area and plot ratio, twin towers have become the new darling of the city and the mainstream trend of high-rise office buildings. But there are also many problems in the twin towers that are constantly emerging. The twin towers have a huge architectural volume and often appear in a symmetrical form. Today, when the sunshine distance and fire protection requirements have become the main content of the code, the influence of the plane layout of the twin buildings on the wind environment around the building has not been fully paid attention to, and the resulting bad wind environment abou...

AI Technical Summary

Problems solved by technology

Today, when the sunshine distance and fire protection requirements have become the main content of the code, the influence of the plane layout of the twin buildings on the wind environment around the building has not been fully paid attention to, and the resulting bad wind environment abounds: the central passage of the twin buildings The outer surface of the building is partially damaged due to the "narrow channel effect"; the wind speed at the corner of the building is too high, causing danger in windy seasons; the strong cold air in winter makes pedestrians feel uncomfortable, and the outdoor quiet wind area in summer is stuffy, which is not conducive to the collection of pollutants and exhaust gas. dissipate

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