A cell boundary element method applied to laminar vortex shedding from circular cylinders
A cell boundary element method applied to laminar vortex shedding from circular cylinders
The two-dimensional unsteady incompressible Navier–Stokes equations are solved for flows around arrangements of circular cylinders at Reynolds number 100 and 200. A hybrid boundary element/finite element method is used to discretise the spatial domain together with a second order implicit finite difference approximation in time. The numerical scheme of study is validated for a uniform stream past an isolated circular cylinder by comparing findings with experimental and numerical studies. Both steady state and time dependent solutions were predicted with good agreement. The numerical approach, known here as the cell boundary element method (cell BEM), was also used to solve flows around two cylinders of equal diameter side by side and in tandem. It was found that no modifications to the method were needed to compute the flow field for these connected domains. In-phase and anti-phase vortex shedding modes were found to exist in the flow simulation. These simulations were in excellent agreement with phenomena observed in experiments. Particle simulations, generated from the cell BEM velocity fields, were found to have great similarity with smoke visualisations from experiment.
211-236
Farrant, T.
d8952df5-06c2-46e8-9613-1fd327ae660b
Tan, M.
4d02e6ad-7915-491c-99cc-a1c85348267c
Price, W.G.
b7888f47-e3fc-46f4-9fb9-7839052ff17c
2001
Farrant, T.
d8952df5-06c2-46e8-9613-1fd327ae660b
Tan, M.
4d02e6ad-7915-491c-99cc-a1c85348267c
Price, W.G.
b7888f47-e3fc-46f4-9fb9-7839052ff17c
Farrant, T., Tan, M. and Price, W.G.
(2001)
A cell boundary element method applied to laminar vortex shedding from circular cylinders.
Computers & Fluids, 30 (2), .
(doi:10.1016/S0045-7930(00)00009-8).
Abstract
The two-dimensional unsteady incompressible Navier–Stokes equations are solved for flows around arrangements of circular cylinders at Reynolds number 100 and 200. A hybrid boundary element/finite element method is used to discretise the spatial domain together with a second order implicit finite difference approximation in time. The numerical scheme of study is validated for a uniform stream past an isolated circular cylinder by comparing findings with experimental and numerical studies. Both steady state and time dependent solutions were predicted with good agreement. The numerical approach, known here as the cell boundary element method (cell BEM), was also used to solve flows around two cylinders of equal diameter side by side and in tandem. It was found that no modifications to the method were needed to compute the flow field for these connected domains. In-phase and anti-phase vortex shedding modes were found to exist in the flow simulation. These simulations were in excellent agreement with phenomena observed in experiments. Particle simulations, generated from the cell BEM velocity fields, were found to have great similarity with smoke visualisations from experiment.
Text
farr_01.pdf
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Published date: 2001
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Local EPrints ID: 21849
URI: http://eprints.soton.ac.uk/id/eprint/21849
ISSN: 0045-7930
PURE UUID: 98dd3af1-ca0a-414f-83ee-10af1d487416
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Date deposited: 16 Mar 2006
Last modified: 15 Mar 2024 06:33
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T. Farrant
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