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Numerical simulation of unsteady low-Reynolds number flow around rectangular cylinders

Sohankar, Ahmad ; Norberg, Christoffer LU and Davidson, Lars (1997) In Journal of Wind Engineering and Industrial Aerodynamics 69-71. p.189-201
Abstract
Calculations of unsteady two-dimensional-flow around rectangular cylinders at incidence are presented. The Reynolds numbers are low ( ⩽ 200), so that the flow presumably is laminar. The results are in reasonable agreement with the indeed scarce experimental data available at these low Reynolds numbers. An incompressible SIMPLEC code is used employing non-staggered grid arrangement. A third-order QUICK scheme is used for the convective terms. The time discretization is implicit and a second-order Crank-Nicolson scheme is employed. The influence of the cylinder side ratio ( = 1−4) at various angles of incidence (α = 0°−90°) is investigated. A number of quantities such as Strouhal number, drag, lift, and moment coefficients are calculated.... (More)
Calculations of unsteady two-dimensional-flow around rectangular cylinders at incidence are presented. The Reynolds numbers are low ( ⩽ 200), so that the flow presumably is laminar. The results are in reasonable agreement with the indeed scarce experimental data available at these low Reynolds numbers. An incompressible SIMPLEC code is used employing non-staggered grid arrangement. A third-order QUICK scheme is used for the convective terms. The time discretization is implicit and a second-order Crank-Nicolson scheme is employed. The influence of the cylinder side ratio ( = 1−4) at various angles of incidence (α = 0°−90°) is investigated. A number of quantities such as Strouhal number, drag, lift, and moment coefficients are calculated. Time sequences of fully saturated flow are also provided. (Less)
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publishing date
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Contribution to journal
publication status
published
subject
in
Journal of Wind Engineering and Industrial Aerodynamics
volume
69-71
pages
189 - 201
publisher
Elsevier
external identifiers
  • scopus:0031177903
DOI
10.1016/S0167-6105(97)00154-2
language
English
LU publication?
yes
id
11eb686f-ece4-471f-b5bb-0802600f30ab
date added to LUP
2022-10-13 17:08:56
date last changed
2025-04-04 14:20:01
@article{11eb686f-ece4-471f-b5bb-0802600f30ab,
  abstract     = {{Calculations of unsteady two-dimensional-flow around rectangular cylinders at incidence are presented. The Reynolds numbers are low ( ⩽ 200), so that the flow presumably is laminar. The results are in reasonable agreement with the indeed scarce experimental data available at these low Reynolds numbers. An incompressible SIMPLEC code is used employing non-staggered grid arrangement. A third-order QUICK scheme is used for the convective terms. The time discretization is implicit and a second-order Crank-Nicolson scheme is employed. The influence of the cylinder side ratio ( = 1−4) at various angles of incidence (α = 0°−90°) is investigated. A number of quantities such as Strouhal number, drag, lift, and moment coefficients are calculated. Time sequences of fully saturated flow are also provided.}},
  author       = {{Sohankar, Ahmad and Norberg, Christoffer and Davidson, Lars}},
  language     = {{eng}},
  pages        = {{189--201}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Wind Engineering and Industrial Aerodynamics}},
  title        = {{Numerical simulation of unsteady low-Reynolds number flow around rectangular cylinders}},
  url          = {{http://dx.doi.org/10.1016/S0167-6105(97)00154-2}},
  doi          = {{10.1016/S0167-6105(97)00154-2}},
  volume       = {{69-71}},
  year         = {{1997}},
}