NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Simulation of solidification in a Bridgman cellThe Hg/Cd/Te solidification in a Bridgman cell was thermally analyzed by Continuum's VAST code. The energy equation is solved in an axisymmetric, quasi steady domain for both the molten and solid alloy regions. Alloys composition is calculated by a simplified one dimensional model to estimate its effect on melt thermal conductivity and, consequently, on the temperature field within the cell. Solidification is assumed to occur at a fixed temperature of 979 K. Simplified boundary conditions are included to model both the radiant and conductive heat exchange between the furnace walls and the alloy. Calculations are performed to show how the steady state isotherms are affected by: (1) the hot and cold furnace temperatures; (2) boundary condition parameters; and (3) the growth rate which affects the calculated alloy's composition.
Document ID
19850003006
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Dakhoul, Y. M. (Continuum, Inc. Huntsville, AL, United States)
Farmer, R. C. (Continuum, Inc. Huntsville, AL, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1984
Publication Information
Publisher: NASA
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.26:3843
NASA-CR-3843
Accession Number
85N11314
Funding Number(s)
CONTRACT_GRANT: NAS8-35331
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available