Enthalpy Porosity Method for CFD Simulation of Natural Convection Phenomenon for Phase Change Problems in the Molten Pool and its Importance during Melting of Solids
Shielded transportation casks are commonly used for transportation and storage of radioactive waste materials. Design approval of such casks by regulatory authority is subject to its compliance with a thermal test (among other tests) Due to exposure of cask to fire , there is a possibility of melting of the shielding material (lead) used for the cask and need to evaluate extent of melting. Conduction based codes have been used extensively for modeling the melting process in such casks. . But in actual case there will be natural convection in molten region . This paper intends to bring out effect of neglecting natural convection phenomena for thermal analysis of such casks by considering a validation problem reported in open literature.
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