Numerical simulation of low-Mach number gas mixture flows with heat and mass transfer using unstructured grids

A mathematical model and a numerical algorithm have been developed for the numerical prediction of 2-D plane and axisymmetrical rotational viscous gas mixture flows inside highly heated modem engineering devices like chemical vapor deposition (CVD) reactors. The model formulated is valid for arbitrary temperature and mixture composition differences, induced by an intensive heat and mass transfer, as well as for buoyancy effects. Radiative heat exchange between different solid parts through a non-participating gas, conjugated heat transfer inside solid blocks, and heterogeneous chemical transformations with solid film deposition are also accounted for. The numerical algorithm has been constructed on the basis of finite-volume approximations on unstructured grids. After the detailed testing on a set of sample problems, the capabilities of the present version of the computer code DRUG-2D (Digital Researcher on Unstructured Grid) are illustrated by the first numerical results for the real complex flow inside the CVD Planetary Reactor(TM). (C) 1998 Elsevier Science B.V. All rights reserved.