Crystal Research and Technology
Cryst. Res. Technol. 36 (2001) 695 - Abstract -

J. L. Plaza, E. Diéguez

Departamento de Física de Materiales, Facultad de Ciencias, Universidad Autónoma de Madrid, Spain

Heat and Momentum Transfer Numerical Analysis in a Vertical Bridgman Growth System

In this work the momentum and heat transfer on a Bridgman system for the growth of GaSb has been studied. The main objective was to obtain some information about the role of the different processes like conduction, radiation and convective effects both in the melted material and the surrounding environment. These simulations are based on a 2D axi-symmetrical model using a finite element method based code. The simulations have been carried out both in steady and transient states. It has been demonstrated that the consideration of a moving environment is important in the distribution of temperatures. The effects of the variations of thermal conductivities and emisivities on the thermal and velocity fields have been investigated. The results show that the key parameters are the thermal conductivities of the different materials present in the system, which produce significant changes in the convective flows inside the melt.

Keywords: heat transfer, numerical analysis, vertical Bridgman growth



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