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Computer modeling of convection in the liquid metal during solidificationNumerical methods are used to study thermally/gravitationally induced convection during solidification. The primary object is aimed at understanding the flow field in the liquid metal pool due to convection. An Al-0.5Fe weight percent alloy is assumed to fill a small scale vertical rectangular enclosure model for this study. The Alternating Direction Implicit method and Successive Overrelaxation method are employed to solve these equations, which include the energy balance equation coupled with the mass and momentum equations. Both transient and steady state conditions under 1 g and low gravity (0.001 g) are investigated. The solutions for the two-dimensional isotherms and streamlines under 1 g conditions are graphically presented. The quantitative results show that the convection which occurs in the liquid metal pool is very small and is likely to have a negligible effect on the solute redistribution ahead of the solid-liquid interface.
Document ID
19880035253
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lott, R. L., Jr.
(Vanderbilt University Nashville, TN, United States)
Cheng, T. S.
(Vanderbilt Univ. Nashville, TN, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1988
Subject Category
Materials Processing
Report/Patent Number
AIAA PAPER 88-0643
Accession Number
88A22480
Funding Number(s)
CONTRACT_GRANT: NAGW-810
Distribution Limits
Public
Copyright
Other

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