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 v iscous gas mixture flows inside highly heated modem engineering device s 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 buoya ncy effects. Radiative heat exchange between different solid parts thr ough a non-participating gas, conjugated heat transfer inside solid bl ocks, and heterogeneous chemical transformations with solid film depos ition are also accounted for. The numerical algorithm has been constru cted on the basis of finite-volume approximations on unstructured grid s. After the detailed testing on a set of sample problems, the capabil ities of the present version of the computer code DRUG-2D (Digital Res earcher on Unstructured Grid) are illustrated by the first numerical r esults for the real complex flow inside the CVD Planetary Reactor(TM). (C) 1998 Elsevier Science B.V. All rights reserved.