Author(s)

G.F. Naterer

Abstract

A PHASES (PHysical Algorithm for Species - Energy Simulation) model is applied to solid - liquid phase transition problems with thermosolutal convection in the melt. The control-volume-based finite element method employs a mixture continuum formulation of the momentum, species and energy equations in the solid, melt and liquid regions. An implicit enthalpy-based procedure solves the species and energy conservation equations in conjunction with a phase itera- tion procedure and the binary phase diagram. The coupled mass - momentum equation set is solved with a simultaneous co-located variable technique for the multiphase pressure - velocity solution. Non-equilibrium and anisotropic in- terdendritic conditions are simulated in the numerical model. Thermosolutal convection a

Keywords