Title: Performance of a pressure-based unstructured code and a multi-block structured code for heat transfer and fluid flow

Authors: Rongguang Jia, Bengt Sunden

Addresses: Division of Heat Transfer, Lund Institute of Technology, PO Box 118, Lund 22100, Sweden. ' Division of Heat Transfer, Lund Institute of Technology, PO Box 118, Lund 22100, Sweden

Abstract: This paper reports a multi-block unstructured method for incompressible flows and the performance comparison with a multi-block structured method. The unstructured collocated grid is composed of arbitrary cell shapes. Pressure and velocity are stored at cell centres; Rhie and Chow interpolation is used to prevent checker boarding. The SIMPLE algorithm is used for pressure–velocity coupling. The code is calibrated with benchmark cases using hexahedral and prism meshes, and is shown to perform very well for all cases considered. In addition, the performances of the structured and unstructured codes are compared.

Keywords: performance comparison; CGNS; unstructured code; multi-block structured code; heat transfer; fluid flow; incompressible flows; pressure; velocity; finite volume method.

DOI: 10.1504/PCFD.2005.006752

Progress in Computational Fluid Dynamics, An International Journal, 2005 Vol.5 No.3/4/5, pp.171 - 180

Published online: 05 Apr 2005 *

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