A Modeling Method Suitable for Numerical Wind Tunnel Simulation of Mountain Buildings

A modeling method and numerical wind tunnel technology, applied in 3D modeling, image data processing, electrical digital data processing, etc., can solve problems such as wind field influence, narrow application range, complex modeling, etc., to achieve simple modeling, Improved accuracy and wide application range

Active Publication Date: 2018-06-26
BEIJING INST OF ARCHITECTURAL DESIGN
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Problems solved by technology

[0003] The purpose of the present invention is to provide a modeling method suitable for numerical wind tunnel simulation of mountain buildings, to solve the problem of terrain truncation affecting the wind field and the low accuracy of CFD numerical simulation of mountain buildings in previous mountain building numerical wind tunnel simulation methods , technical issues with complex modeling and narrow scope of application

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  • A Modeling Method Suitable for Numerical Wind Tunnel Simulation of Mountain Buildings
  • A Modeling Method Suitable for Numerical Wind Tunnel Simulation of Mountain Buildings
  • A Modeling Method Suitable for Numerical Wind Tunnel Simulation of Mountain Buildings

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Embodiment Construction

[0041] Examples see Figure 1-5 , a modeling method suitable for numerical wind tunnel simulation of mountainous buildings, the steps are as follows:

[0042] Step 1: If image 3 As shown, according to the building size and coordinate data in the actual construction plan, the CAD software is used to draw a picture, and the test building model is established, that is, the FAST reflective panel 3. The size of the FAST reflective panel 3 is equal to the size of the FAST reflective panel in the actual construction plan;

[0043] Step 2: If Figure 4 As shown, according to the measured terrain coordinate data, a mountain model 2 is established in the CAD drawing, wherein the mountain model 2 is obtained by fitting according to the measured terrain coordinate data;

[0044] Step 3: Determine the vertical distance L from the FAST reflection panel 3 to the entrance 5 of the wind field calculation domain 1 And the vertical distance L between the FAST reflection panel 3 and the outle...

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Abstract

A modeling method applicable to numerical wind tunnel simulation of a mountainous building comprises steps as follows: Step 1, using CAD (computer aided design) software for drawing a graph and establishing a test building model; Step 2, establishing a mountain model in the CAD graph; Step 3, determining the vertical distance L1 between the test building model and a wind field computational domain entrance as well as the vertical distance L2 between the test building model and a wind field computational domain outlet; Step 4, determining the distance between the wind field side boundary c and the test building model, the distance between the wind field side boundary d and the test building model as well as the distance between the ground and the wind field upper boundary; Step 5, obtaining a mountain side boundary extension line from the CAD graph; Step 6, filling the CAD graph to obtain four flat ground areas; Step 7, establishing a wind field space model; Step 8, importing the mountain model, the test building model, the flat ground models and the wind field space model into fluid analysis software, and setting boundary conditions for analysis. The effect of steps at the boundary on the wind field is reduced, and the accuracy of CFD numerical simulation of the mountainous building is improved.

Description

technical field [0001] The invention relates to a modeling method for mountain building wind environment simulation. Background technique [0002] The numerical wind tunnel simulation method is a method of applying computational fluid dynamics (Computational Fluid Dynamic, CFD) technology to numerically solve the fluid dynamic equations followed by the wind flow around the building on the computer, and visualize the simulation results with the help of computer graphics technology. It is a research method for simulating the wind field around buildings. In the past ten years, the numerical wind tunnel simulation method has developed into a structural wind engineering research method, and gradually formed a new branch of structural wind engineering - Computational Wind Engineering (CWE). Compared with the tunnel test method, the numerical wind tunnel simulation method has the following advantages: 1) low cost; 2) short cycle; 3) complete data, can obtain the distribution of va...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05
CPCG06F30/367G06T17/05
Inventor 朱忠义李华峰赵妍崔建华徐金蓓甘明王哲葛昕
Owner BEIJING INST OF ARCHITECTURAL DESIGN
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