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Large eddy simulation of flow past a square cylinder: Comparison of different subgrid scale models

Sohankar, Ahmad ; Davidson, Lars and Norberg, Christoffer LU (2000) In Journal of Fluids Engineering 122(1). p.39-47
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... (More)
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. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Fluids Engineering
volume
122
issue
1
pages
39 - 47
publisher
American Society Of Mechanical Engineers (ASME)
external identifiers
  • scopus:0002313908
ISSN
0098-2202
DOI
10.1115/1.483224
language
English
LU publication?
yes
id
31008707-f44c-4e33-ad0d-cb4224f28775
date added to LUP
2022-10-13 17:18:07
date last changed
2022-11-28 04:04:06
@article{31008707-f44c-4e33-ad0d-cb4224f28775,
  abstract     = {{Large eddy simulation of flow past a rigid prism of a square cross section with one side facing the oncoming flow at Re=2.2×10<sup>4</sup> 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.}},
  author       = {{Sohankar, Ahmad and Davidson, Lars and Norberg, Christoffer}},
  issn         = {{0098-2202}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{39--47}},
  publisher    = {{American Society Of Mechanical Engineers (ASME)}},
  series       = {{Journal of Fluids Engineering}},
  title        = {{Large eddy simulation of flow past a square cylinder: Comparison of different subgrid scale models}},
  url          = {{http://dx.doi.org/10.1115/1.483224}},
  doi          = {{10.1115/1.483224}},
  volume       = {{122}},
  year         = {{2000}},
}