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An analysis on the solidification process of alloy casting with a contact resistance
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 Title & Authors
An analysis on the solidification process of alloy casting with a contact resistance
Kim, U-Seung; Lee, Gwan-Su; Kim, Gwang-Seon; Im, Ik-Tae;
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 Abstract
The solidification process of Al 4.5%Cu alloy is numerically studied in the presence of contact resistance between mold and cast. Natural convection is considered in the liquid and mushy regions. The porosity approach is applied to the mushy zone modeling and linear variation of the solid fraction on the temperature is assumed. Results show that the mushy region is wider in the case with a contact resistance compared to the perfect contact condition. The temperature of the cast with a temporal variation in the contact heat transfer coefficient changes very rapidly in the early stage of the casting process compared to that with constant contact heat transfer coefficient.
 Keywords
Casting;Solidification of Alloy;Natural Convection;Contact Heat Transfer Coefficient;
 Language
Korean
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