THE EFFECT OF THERMAL CONTACT RESISTANCE ON THE SOLIDIFICATION PROCESS OF A PURE METAL

The role of thermal contact resistance between a casting and a metal m old, as well as the effect of natural convection in the melt during so lidification of a pure metal, is numerically studied. Numerical simula tion is performed for a two-dimensional rectangular cavity using the c oordinate transformation by boundary-fitted coordinate, and pure alumi num is used as the phase-change material. The influences of thermal co ntact resistance on the interface shape and position, solidified volum e fraction, streamlines, temperature field, and the local heat transfe r are investigated.