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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

BUOYANCY AND INERTIA DRIVEN FLOWS IN THE SLIDING TECHNIQUE OF LPE CRYSTAL GROWTH

Get access (open in a dialog) DOI: 10.1615/IHTC10.140
pages 275-280

Sinopsis

Numerical predictions are presented for the problem of transient solutal mixed convection in a laminar flow in bottom driven cavities. The motivation for this study is the need to identify and understand the phenomena relevant to liquid phase epitaxial growth of GaAs crystals. The mass and momentum transfer problem is solved using the KAMELEON-II software package. The predictions in the form of stream function, species concentration and local Sherwood numbers show that mass transfer to the bottom plate is affected by interplay between buoyancy and inertial forces. Variations in crystalline morphology like compositional inhomogeneity and thickness non-uniformity, which the diffusion - based growth models fail to account for, may be attributed to mixed convection in the liquid phase.