Journal
JOURNAL OF COMPUTATIONAL PHYSICS
Volume 185, Issue 1, Pages 100-119Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S0021-9991(02)00049-9
Keywords
upwind discretization; time-derivative preconditioning; two-phase flow; fluidization
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The development of a class of low-diffusion upwinding methods for computing dense gas-solid flows is presented in this work. Am artificial compressibility/low-Mach preconditioning strategy is developed for a hyperbolic two-phase flow equation system consisting of separate solids and gas momentum and continuity equations. The eigenvalues of this system are used to devise extensions of the AUSM+ [1] and LDFSS [2] flux-splitting methods that provide high resolution capturing of bubble growth and collapse in gas-solid fluidized beds. Applications to several problems in fluidization are presented. (C) 2002 Elsevier Science B.V. All rights reserved.
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