Comparison of performance of four commonly-used turbulence models in numerically simulating two-dimensional backward-facing step turbulent flows

Zhang, Lei, Liu, Tao, Gao, Wenfeng, and Lin, Wenxian (2012) Comparison of performance of four commonly-used turbulence models in numerically simulating two-dimensional backward-facing step turbulent flows. Journal of Yunnan Normal University, 32 (4). pp. 8-16.

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Abstract

In the paper, the performances of four commonly-used turbulence models (k-epsilon turbulence model, RNG k-epsilon turbulence model, Realizable k-epsilon turbulence model, and k-omega turbulence model) are compared by using Fluent to numerically simulate two-dimensional backward-facing step turbulent flows with the Reynolds number in the range of 200 to 6500. The numerical simulations give the instantaneous mean flow fields and time-averaged flow fields predicted by each turbulence model for various Reynolds and the relation between the length of the back flow region and the Reynolds number. All numerical results are also compared to the experimental results obtained by Qi et al.

Item ID: 24273
Item Type: Article (Refereed Research - C1)
Keywords: backward-facing step flow; turbulence model; numerical simulation; re-attachment point; vortex cente
Additional Information:

The paper is written in Chinese with English abstract.

ISSN: 1007-9793
Funders: National Natural Science Foundation of China, Natural Science Foundation of Yunnan Province, China, Program for Changjiang Scholars and Innovative Research Team in University of Ministry of Education of China
Date Deposited: 20 May 2013 01:23
FoR Codes: 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 30%
09 ENGINEERING > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics @ 70%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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