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Numerical Heat Transfer, Part A: Applications
An International Journal of Computation and Methodology
Volume 54, 2008 - Issue 9
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Original Articles

A Numerical Study of Fluid Flow and Heat Transfer around a Square Cylinder at Incidence using Unstructured Grids

, &
Pages 890-913 | Received 15 Jan 2008, Accepted 07 Aug 2008, Published online: 27 Oct 2008
 

Abstract

A numerical investigation of flow and heat transfer around a square cylinder at incidence (α = 0° − 45°) is presented for a range of Reynolds numbers ( Re = 60 − 150). A finite-volume code suitable for unstructured grids has been developed to simulate the flow. The unstructured grid has been generated using the Delaunay triangulation algorithm. A modified pressure-velocity correction scheme with semi-explicit time-stepping is implemented to solve the Navier-Stokes equations. Collocated grid arrangement has been used for the dependent variables. Convective terms have been discretized using a second order upwind least squares scheme. The formation of Karman vortex street has been captured and the Strouhal number associated with the wake has been determined. The dependence of Strouhal number, force coefficients (drag and lift), moment coefficient and average Nusselt number on Reynolds number, and angle of incidence for a fixed blockage ratio has been reported and analyzed.

This investigation has been sponsored by Fluent-ANSYS India (formerly Fluent India).

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