Spanwise length effects on three-dimensional modelling of flow over a circular cylinder

Lei, Chengwang, Cheng, Liang, and Kavanagh, Ken (2001) Spanwise length effects on three-dimensional modelling of flow over a circular cylinder. Computer Methods in Applied Mechanics and Engineering, 190 (22-23). pp. 2909-2923.

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Abstract

In this study, both the two-dimensional (2-D) and three-dimensional (3-D) vortex shedding flows around a circular cylinder are solved using a finite difference method. Numerical experiments are carried out to investigate the spanwise length effects on the prediction of global parameters and the near-wake flow field. The calculated Reynolds number is 1000. The results indicate clearly that the 2-D simulation gives inaccurate predictions at the present Reynolds number. The predictions are significantly improved in 3-D simulations, but inaccuracies may also occur if the spanwise length is set too small. Good agreement with experimental data can be achieved with spanwise lengths above twice the cylinder diameters.

Item ID: 660
Item Type: Article (UNSPECIFIED)
Keywords: Circular cylinder, Vortex shedding, Spanwise length, Three-dimensional modelling, Finite difference method
Additional Information:

© 2001 Elsevier. : This journal is available online - use hypertext links above.

ISSN: 0045-7825
Date Deposited: 23 Oct 2006
FoR Codes: 09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 0%
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