期刊
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
卷 49, 期 10, 页码 1944-1953出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2010.05.022
关键词
Double diffusion; Double dispersion; Natural convection; Open end cavity; Lattice Boltzmann method
Double dispersion in an open end cavities are simulated using Lattice Boltzmann Method (LBM) The flow is driven by the buoyancy effect due to the heated vertical wall and species concentration at the heated wall of the cavity (closed end) The paper is intended to address the physics of flow, heat and mass transfers in open ended cavities and close end slots Prandtl number (Pr) is fixed to 0.71 (air) for the thermal Rayleigh number (Ra(T)) of 10(4), 10(5) and 10(6). The results are presented for moderate Lewis number of 2, 4 and 8 and for a range of buoyancy ratio, N, (species to thermal) The species concentration induced buoyancy force either aids or opposes the thermally driven flow, which is determined by the value of buoyancy ratio (positive or negative, respectively). Interesting flow patterns were predicted for opposing buoyancy forces. (C) 2010 Elsevier Masson SAS. All rights reserved
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