Title: A comprehensive performance comparison for segregated algorithms of flow and heat transfer in complicated geometries

Authors: Z.G. Wu, Z.G. Qu, Ya-Ling He, W.Q. Tao

Addresses: Stat Key Laboratory of Multiphase Flow and Heat Transfer, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China. ' Stat Key Laboratory of Multiphase Flow and Heat Transfer, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China. ' Stat Key Laboratory of Multiphase Flow and Heat Transfer, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China. ' Stat Key Laboratory of Multiphase Flow and Heat Transfer, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China

Abstract: In this paper, a comprehensive performance comparison among CLEAR, SIMPLER and SIMPLEC algorithms at staggered grid system is performed for four incompressible fluid flow and heat transfer problems in complicated geometries. It is found that for most of the relaxation factor variation range CLEAR can appreciably enhance the convergence rate though it is slightly less robust than the other two algorithms. For the four problems tested, the ratio of iteration numbers of CLEAR over that of SIMPLER and SIMPLEC can reach as low as 0.18, 0.09 and the ratio of the CPU time as low as 0.23, 0.18, respectively.

Keywords: CLEAR; SIMPLER; SIMPLEC; incompressible fluid flow; heat transfer; numerical simulation; complex geometry; CFD; computational fluid dynamics.

DOI: 10.1504/PCFD.2008.019477

Progress in Computational Fluid Dynamics, An International Journal, 2008 Vol.8 No.5, pp.233 - 247

Published online: 14 Jul 2008 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article