Title: An efficient numerical solution scheme for the computation of the particle velocity in two-phase flows

Authors: Hai-Wen Ge, Eva Gutheil

Addresses: Engine Research Center, University of Wisconsin, Madison, 1500 Engineering Drive, Madison, WI 53706, USA. ' Interdisziplinares Zentrum fur Wissenschaftliches Rechnen, Universitat Heidelberg, Im Neuenheimer Feld 368, 69120 Heidelberg, Germany

Abstract: A novel efficient numerical solution scheme for the computation of the particle velocity in two-phase flows is proposed. A numerical test shows that the new solution procedure is very robust, accurate, and efficient, and the errors induced by the time discretisation are minimised. The accuracy of the new scheme is independent of the size of the time step. A new time scale is introduced to investigate the drag force. It characterises the relaxation time of the particle to the gas-phase velocity. Numerical test and theoretical analysis show that this new time scale is more appropriate to characterise the particle|s motion.

Keywords: two-phase flow; dispersed particles; particle relaxation time; particle velocity; CFD; computational fluid dynamics; drag force.

DOI: 10.1504/PCFD.2007.015779

Progress in Computational Fluid Dynamics, An International Journal, 2007 Vol.7 No.8, pp.467 - 472

Published online: 14 Nov 2007 *

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