Large Eddy Simulation of Flow Past a Square Cylinder: Comparison of Different Subgrid Scale Models-Reference-Cited by-同舟云学术

Large Eddy Simulation of Flow Past a Square Cylinder: Comparison of Different Subgrid Scale Models

Published:1999-11-15 Issue:1 Volume:122 Page:39-47
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Sohankar Ahmad¹,Davidson L.¹,Norberg C.²

Affiliation:

1. Thermo and Fluid Dynamics, Chalmers University of Technology, SE-412 96 Go¨teborg, Sweden

2. Heat and Power Engineering, Lund Institute of Technology, Box 118, SE-221 00 Lund, Sweden

Abstract

Large eddy simulation of flow past a rigid prism of a square cross section with one side facing the oncoming flow at Re=2.2×104 is performed. An incompressible code is used employing an implicit fractional step method finite volume with second-order accuracy in space and time. Three different subgrid scale models: the Smagorinsky, the standard dynamic, and a dynamic one-equation model, are applied. The influence of finer grid, shorter time step, and larger computational spanwise dimension is investigated. Some global quantities, such as the Strouhal number and the mean and rms values of lift and drag, are computed. A scheme for correcting the global results for blockage effects is presented. By comparison with experiments, the results produced by the dynamic one-equation one give better agreement with experiments than the other two subgrid models. [S0098-2202(00)01001-4]

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/122/1/39/5581269/39_1.pdf

Reference46 articles.

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3. Murakami, S., and Mochida, A., 1995, “On Turbulent Vortex Shedding Flow Past 2D Square Cylinder Predicted by CFD,” J. Wind Eng. Ind. Aerodyn., 54, p. 191191.

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