Abstract
A method has been developed for the representation of the abstraction of heat from castings into bonded sand molds. The method consists of representing the local surface geometry of the part by a plane, cylinder, or sphere, based on the local heat flow environment. The characteristics of the heat flow into the mold for that surface shape are used to specify a set of boundary conditions to be applied to the surface of the casting. Specific examples are given for silica sand-bentonite-water bonded sand mixtures. Implementation of the method in ANSYS, a commercial finite element solver, is described.
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