Advanced Modeling of InP Crystal Growth by the MLEK Process

Abstract

Two and three dimensional flow of a low Prandtl number liquid metal is investigated including the effects of heating, crucible and crystal rotation, and axial magnetic fields. The crucible shape and aspect ratio are also varied to determine their effects. A specially designed spectral element method for axisymmetric geometries is used. Axisymmetric flows that are stabilized with the use of rotation may be unstable to three dimensional disturbances leading to chaotic behavior. Axial magnetic field may have a stabilizing effect on the flow, leading to axisymmetry; however, surprisingly, large magnetic field strengths leads to strengthening of the axial vorticity and consequently strong three dimensionality and new instabilities.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1998
Accession Number
ADA374639

Entities

People

  • A. Tomboulides
  • E. Barouch
  • I. Staroselsky
  • S. A. Orszag
  • Yinglong Zhang

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aspect Ratio
  • Axisymmetric Flow
  • Buoyancy
  • Convection
  • Crystal Growth
  • Energy
  • Equations
  • Geometry
  • Gray Scale
  • Magnetic Fields
  • Prandtl Number
  • Shape
  • Steady State
  • Temperature Gradients
  • Three Dimensional
  • Turbulent Mixing
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Plasma Physics / Magnetohydrodynamics
  • Semiconductor Device Technology