Assessment of Turbulence Models on Bridge-Pier Scour Using Flow-3D

Chandara Man; Genguang Zhang; Vouchleang Hong; Shuang Zhou; Yulin Feng

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Assessment of Turbulence Models on Bridge-Pier Scour Using Flow-3D

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The main purpose of this paper is to analyze the influence of different turbulence flow models on scouring pit of bridge-pier. Flow-3D software is applied in line with the purpose. The key motivation for this study is to contribute to the Flow-3D software by means of some modification and adjustment in the sediment scour model and shallow water model. An assessment of turbulence model adopted with the parameters of the Melville experiment to estimate the maximum scour-depth was performed. In the simulation results, the alternate eddy formation and shedding were repeated while the Karman vortex street formed behind the pier for the large eddy simulation LES turbulence model is more realistic in the flow phenomenon. The results of the scour development of large eddy simulation (LES) turbulence model were found to be more satisfied than the Renormalized group (RNG) turbulence model and close to the prior experiment results. The simulated scour results were significantly different with the observed data collected from previous literature in the reason of some unsuitability of meshing method in Flow-3D software.

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《世界工程和技术（英文）》 |2019年第2期|241-255|共15页
作者
Chandara Man; Genguang Zhang; Vouchleang Hong; Shuang Zhou; Yulin Feng;
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作者单位

College of Water Resources and Architectural Engineering;

Northwest A&F University;

Yangling;

China;

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原文格式 PDF
正文语种 chi
中图分类肿瘤学;
关键词
Flow-3D; Bridge-Piers; Scour; Computational; Fluid; Dynamics; (CFD); Turbulence; Model; Large; Eddy; Simulation; Model; (LES); Renormalized; Group; Model; (RNG);

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Assessment of Turbulence Models on Bridge-Pier Scour Using Flow-3D

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