The solid phase motion has an important effect on macrosegregation. We have in the present paper extended the already existing two-dimensional rigid solid model benchmark case for solid phase motion. Incompressible laminar flow is assumed, and a standard mixture formulation is used for the mass, momentum, energy and solute transport equations. The lever rule is used to describe the local solidification process. A coherency solid motion model accounts for the free-floating grains, assuming that solid velocity is proportional to the mixture velocity and the solid fraction. The two-dimensional benchmark case is simulated using a meshless diffuse approximate method. The results of the meshless method are compared to the finite volume method results of the benchmark case with and without movement of the solid phase. The new benchmark case results show that the solid motion causes an observable effect on the macrosegregation pattern.

Moderated by: Daan Maijer / Michel Billet