Accession Number : ADA325689

Title :   Modeling of InP Crystal Growth by the MLEK Process.

Descriptive Note : Final rept. 1 May 94-31 Aug 96,

Corporate Author : CAMBRIDGE HYDRODYNAMICS INC PRINCETON NJ

Personal Author(s) : Orszag, Steven A. ; Borue, Vadim ; Tomouboulides, Ananias ; Barouch, Eytan

PDF Url : ADA325689

Report Date : 31 OCT 1996

Pagination or Media Count : 47

Abstract : The goal of this work is to achieve prototype simulations of the MLEK process for growth of InP crystals. We have made several key advances in this work, including numerical simulations of three dimensional time dependent low Prandtl number melt convection, with differential rotation, and magnetic fields. To do this we have developed a 3D general geometry spectral element code. We have demonstrated how rotation and, especially, differential rotation can stabilize melt flows and how magnetic fields can also stabilize these flows. We have also shown that magnetic fields, in certain parameter regimes, can act, somewhat surprisingly, to destabilize the flow. We have also extended our renormalization group based turbulence models to describe stratified flows across the full range of low, moderate, and high stratification.

Descriptors :   *MAGNETIC FIELDS, *INDIUM PHOSPHIDES, *CRYSTAL GROWTH, MELTS, CRYSTALS, CRYSTAL DEFECTS, MILITARY APPLICATIONS, ENCAPSULATION, STRATIFICATION, ASPECT RATIO, TWINNING(CRYSTALLOGRAPHY), DIFFERENTIAL GEOMETRY, PRANDTL NUMBER.

Subject Categories : Crystallography
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE