NUMERICAL-SIMULATION OF DYNAMIC LAYER SOLIDIFICATION FOR A EUTECTIC BINARY-SYSTEM

Direct numerical simulations of layer solidification for unsteady cond ition have been carried out for a eutectic binary fluid of lauric acid and myristic acid, which exhibits a laminar flow between two parallel walls of different temperatures, Two-dimensional differential equatio ns for momentum, heat and mass transfer are solved simultaneously usin g non-orthogonal coordinate systems. The boundary-fit grid is generate d according to the time-changed shape of the solid-liquid interface. T he predictions are discussed with reference to the time-changes of the shape of the solid-liquid (S-L) interface, the growth rate, the conce ntration at the S-L interface, the super-cooled layer adjacent to the S-L interface, and the concentration in the solid.