DOI: 10.1615/ICHMT.2004.IntThermSciSemin
ISBN Print: 978-9-61913-930-1
Momentum Transport Modeling Including Solid Phase Movement and Nucleation for Direct Chill Casting Processes
SINOPSIS
This paper develops a simple one-phase mixture continuum model for predicting the momentum transfer in multicomponent solidification systems. The model takes into account the pure liquid, nucleation and movement of the globulitic solid phase, formation of the rigid porous solid matrix, and complete solid. The model copes with columnar and equiaxed solidification within one equation and properly describes the Newtonian fluid with variable viscosity and density in the pure liquid limit, which was not the case in previous models. The model for the first time incorporates the nucleation phenomena into one-phase model of solidification. The model has been developed for use in direct-chill (DC) and thin strip casting of aluminum alloys.