Numerical Simulation of Pressure Distribution around the Reticulated Shell Structure with Large Span

Abstract:

In order to investigate the pressure distribution around the reticulated shell structure with large span, a commercial Computational Fluid Dynamic software Fluent is employed to obtain the wind load and the coefficients of the time averaged pressure distribution around the reticulated shell structure in this paper. The numerical simulations of surface pressure are consistent with the experimental results. The characteristics of the wind pressure distribution are described through the flow analysis around the reticulated shell structure. All these discoveries can be used as a reference for the new version of the wind load criteria.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 710-712
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.710
• Online since: September 2013
• Authors: Zi Hou Yuan, Yi Chen Yuan, Wei Sun
• Keywords: Computational Fluid Dynamics (CFD), Criterion, K-ε Model in Form of Realizable, Reticulated Dome, Steady Incompressible Flow

References

[1] However such structures tend to be low buildings, which are located in the areas of big changes of wind speed and high turbulence within the atmosphere, and the wind field of the structure is very complicated for their irregular roof shapes. It is of great significance to further study wind lord and wind-induced response of Large-span reticulated dome structure. [2] The wind tunnel experiments of the load distribution on the surface of reticulated dome structure were studied by Maher [3] in the 1960s. With the development of computer technology, the numerical simulation on reticulated dome structure has preliminarily been carried out. Compared with the wind tunnel test, there are huge cost benefits for the numerical simulation, that the continuous distribution information of physical quantities can be obtained, such as wind and wind load, and visual complex details of the force, resulting in a deeper understanding on the distribution of the wind pressure. This article main does numerical simulation for round coal field, the typical of shell'top--cylindrical structure. Physical Models and Numerical Method The top-cylindrical structure of closed coal field in diameter 120m is shown in Figure 1. Fig.1. The diagram closed coal field in diameter 120m Calculation Results and Analysis The wind pressure positive direction is the wind pressure vector pointing to the coal field. The coal field model discussed in this paper is a typical flow around a bluff body near the wall. In aerodynamics, the pressure of the structure surface is usually expressed by a dimensionless pressure coefficient Cp, Cp= (p-p.0

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