On physical mechanisms of mushy zone formation in solidification of pure semitransparent materials

摘要

Two different models, the isothermal mushy zone model and the non-equilibrium planar interface model, are employed to solve the solidification problem of a one-dimensional semitransparent slab subject to radiative and convective cooling at the surface. The mushy zone model is based on the assumption of local equilibrium and predicts the fromatin of a mushy zone as soon as the temperature of the slab surface reaches the equilibrium melting temperature.