Transient Simulation of a Three-Dimensional Moving Downburst

Bai Feng Ji; Wei Lian Qu

doi:10.4028/www.scientific.net/AMR.446-449.3875

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 446-449Transient Simulation of a Three-Dimensional Moving...

Transient Simulation of a Three-Dimensional Moving Downburst

Abstract:

Thunderstorm microbursts, which are sources of extreme wind loadings in nature, have caused numerous structural failures, especially collapses of transmission tower around the world. Numerical simulation using computational fluid dynamics (CFD) has recently made significant progress in simulating downbursts. In this paper, transient simulation of a three-dimensional moving downburst was studied using computational fluid dynamics simulation method. Transient simulation of a three-dimensional moving downburst was conducted using time-filtered Reynolds Averaged Navier-Stokes (RANS) numerical simulation method. The three-dimensional transient wind field characteristics in a moving downburst were studied in detail. The results indicate that transient wind field characteristics in a moving downburst present quite different characteristics compared with stationary downburst at different heights and radial positions.

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Periodical:

Advanced Materials Research (Volumes 446-449)

Pages:

3875-3878

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.446-449.3875

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Online since:

January 2012

Authors:

Bai Feng Ji, Wei Lian Qu

Keywords:

Computational Fluid Dynamics (CFD), Downbursts, Numerical Simulation, Wind Field Characteristics

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