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Non-direct modeling urban wind environment CFD simulation method

A simulation method and wind environment technology, applied in the field of CFD simulation of urban wind environment with indirect modeling, can solve problems such as low efficiency, large workload, and large repetitive work, so as to reduce workload, improve efficiency, and efficiently simulate simulated effect

Active Publication Date: 2019-04-12
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

When simulating the urban wind environment, if the urban buildings are directly modeled and divided into grids, the geometric model of the urban buildings needs to be established first, and then the grid topology is carried out. And divide the grid, the repetitive work is large, and the efficiency is low

Method used

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  • Non-direct modeling urban wind environment CFD simulation method
  • Non-direct modeling urban wind environment CFD simulation method
  • Non-direct modeling urban wind environment CFD simulation method

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0025] A kind of non-direct modeling urban wind environment CFD simulation process of the present invention, such as figure 1 As shown, the specific implementation is as follows:

[0026] 1. Select the research city area, taking a hypothetical small regional city as an example, the distribution of urban buildings is as follows figure 2 As shown, determine the size of the urban area and obtain...

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Abstract

The invention belongs to the field of urban wind environments, and discloses a non-direct modeling urban wind environment CFD simulation method. The method comprises the following steps: (a) selectinga to-be-studied city and determining the size of the to-be-studied city, and obtaining building data in the to-be-studied city; constructing a computational domain of the city to be studied, and performing grid division on the computational domain; and (b) adding a resistance source to the grid at the position of the building in the computational domain, and performing computational fluid dynamics simulation on the computational domain added with the resistance source to obtain the wind field distribution condition of the city, thereby realizing the wind environment simulation of the city. Through the method, the workload is reduced, the method is particularly suitable for simulating urban wind environments in different regions, repeated work is reduced, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the field of urban wind environment, and more specifically relates to a non-direct modeling CFD simulation method for urban wind environment. Background technique [0002] In recent years, the density of urban buildings has been increasing, the building forms are different, and the spatial layout is changing, which has a great impact on the urban wind environment. As the most densely populated area in a city, its wind environment has a great impact on human comfort and structural safety, so CFD simulation of urban wind environment is very necessary. [0003] Taking Shenzhen as an example, Wu Zhenzhen et al. directly modeled urban buildings and meshed the model, and used the k-ε model to simulate the urban wind environment based on Fluent fluid calculation software; similar studies include: Liu Lijun et al., Qian Yi et al. conducted wind environment research and simulation by establishing an actual urban model. When simulating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/23Y02A90/10
Inventor 刘震卿张冲
Owner HUAZHONG UNIV OF SCI & TECH
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