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Comparison of a grid-based CFD method and vortex dynamics predictions of low Reynolds number cylinder flows

Published online by Cambridge University Press:  03 February 2016

L. Baranyi  and
R. I. Lewis
L. Baranyi
Affiliation:
Department of Fluid and Heat Engineering, University of Miskolc, Hungary
R. I. Lewis
Affiliation:
University of Newcastle upon Tyne, UK
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Abstract

Computational fluid dynamics models range from the finite difference type grid-based method to the Lagrangian style vortex cloud simulation technique for solving the Navier-Stokes equations. This paper undertakes a comparison of these two methods for the classical datum bluff body case of flow past a stationary circular cylinder at low Reynolds numbers in the range 10 to 220. Comparisons include time-history, time-mean and root-mean-square values of oscillating drag and lift coefficients, frequency of vortex shedding and related vortex street wake flow patterns. Particularly close agreement was obtained for Strouhal number versus Reynolds number, and good agreement for time-mean value of drag coefficients; comparison was also made with experimental results. Attempts are also made to calculate the skin friction and surface pressure components of the cylinder drag, revealing the significance of skin friction drag within this range and its relative insignificance above a Reynolds number of 220.

Type
Research Article
Information
The Aeronautical Journal , Volume 110 , Issue 1103 , January 2006 , pp. 63 - 71
Copyright
Copyright © Royal Aeronautical Society 2006 

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