Current Challenges in Modeling Solidification Processes
Igor Vušanovic
Mechanical Engineering, University of Montenegro
ABSTRACT: Modeling solidification phenomena, processes, and operations is challenging due to the vast range of length scales, from sub-micron crystal morphology to meter sized equipment. Typical modeling scenarios involve a numerical solution of coupled heat, mass, and solute transport on both macro and micro scales, supported by appropriate constitutive closure relationships. Some simple solidification models can be robust in practice and give reasonable, acceptable results. Increasing the level of complexity of these models does not necessarily lead to a higher level of precision or insight. Often the numerical ‘noise’ in such calculations masks the predicted physically realistic behaviors. Vušanović presents an overview of various levels of solidification models, his experience with the models, and some of the obtained results. He also presents some very early experience with models that allow for solid movement—adopting approaches that have been previously used in modeling flow on porous media and sediment transport.
