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Numerical simulation of unsteady flow around a square two-dimensional cylinder

Sohankar, Ahmad ; Davidson, Lars and Norberg, Christoffer LU (1995) p.517-520
Abstract
Calculations of two-dimensional unsteady flow around a quadratic two-dimensional cylinder at zero angle of attack are performed. The Reynolds numbers are low (Re = 45 - 250) so that the flow presumably is laminar. At Re > 50 a von Karman vortex street with a well-defined shedding frequency is predicted. An incompressible SIMPLEC finite volume code employing non-staggered grid arrangement is used. A third-order QUICK scheme and a second-order Van Leer scheme are used for the convective terms. The time discretization is implicit and a second-order Crank-Nicolson scheme is employed. At Re = 100, the influence of the location of the inflow, outflow and side walls (blockage), respectively, is investigated. A number of... (More)
Calculations of two-dimensional unsteady flow around a quadratic two-dimensional cylinder at zero angle of attack are performed. The Reynolds numbers are low (Re = 45 - 250) so that the flow presumably is laminar. At Re > 50 a von Karman vortex street with a well-defined shedding frequency is predicted. An incompressible SIMPLEC finite volume code employing non-staggered grid arrangement is used. A third-order QUICK scheme and a second-order Van Leer scheme are used for the convective terms. The time discretization is implicit and a second-order Crank-Nicolson scheme is employed. At Re = 100, the influence of the location of the inflow, outflow and side walls (blockage), respectively, is investigated. A number of quantities such as lift and drag coefficients and various surface pressure coefficients are presented. (Less)
Please use this url to cite or link to this publication:
author
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publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Twelfth Australasian Fluid Mechanics Conference : The University of Sydney, Australia 1995 - The University of Sydney, Australia 1995
editor
Bilger, R. W.
pages
517 - 520
publisher
University of Sydney
language
English
LU publication?
yes
id
7680c90a-ceb3-45dd-8784-65044a16836d
date added to LUP
2023-02-15 17:41:23
date last changed
2023-02-20 12:48:20
@inproceedings{7680c90a-ceb3-45dd-8784-65044a16836d,
  abstract     = {{Calculations of two-dimensional unsteady flow around a quadratic two-dimensional cylinder at zero angle of attack are performed. The Reynolds numbers are low (Re = 45 - 250) so that the flow presumably is laminar. At <i>Re</i> &gt; 50 a von Karman vortex street with a well-defined shedding frequency is predicted. An incompressible SIMPLEC finite volume code employing non-staggered grid arrangement is used. A third-order QUICK scheme and a second-order Van Leer scheme are used for the convective terms. The time discretization is implicit and a second-order Crank-Nicolson scheme is employed. At <i>Re</i> = 100, the influence of the location of the inflow, outflow and side walls (blockage), respectively, is investigated. A number of quantities such as lift and drag coefficients and various surface pressure coefficients are presented.}},
  author       = {{Sohankar, Ahmad and Davidson, Lars and Norberg, Christoffer}},
  booktitle    = {{Twelfth Australasian Fluid Mechanics Conference : The University of Sydney, Australia 1995}},
  editor       = {{Bilger, R. W.}},
  language     = {{eng}},
  pages        = {{517--520}},
  publisher    = {{University of Sydney}},
  title        = {{Numerical simulation of unsteady flow around a square two-dimensional cylinder}},
  url          = {{https://lup.lub.lu.se/search/files/137954081/Sohankar_al_Sydney_1995.pdf}},
  year         = {{1995}},
}