Solidification of a semitransparent planar layer subjected to radiative and convective cooling

摘要

This work deals with the analysis of solidification of a semi-transparent planar layer subjected to radiative and convective cooling. Isothermal mushy-zone model is considered. Enthalpy formulation of the energy equation is solved using the lattice Boltzmann method. To compare the results, the same equation is also solved using the fully implicit finite volume method. Discrete ordinate method is used to compute the radiative information in both the approaches. Effects of radiative properties such as the extinction coefficient, the scattering albedo and refractive index on the solid fraction and temperature are analyzed. Results are validated with those available in the literature. Lattice Boltzmann method and the discrete ordinate method were found to work satisfactorily. (c) 2007 Elsevier Ltd. All rights reserved.