Computational modelling of transport phenomena in high energy materials processing application: large eddy simulation and parallelisation Online publication date: Sun, 11-Jan-2015
by Dipankar Chatterjee
International Journal of Computational Materials Science and Surface Engineering (IJCMSSE), Vol. 4, No. 1, 2011
Abstract: A comprehensive three-dimensional numerical model is presented in order to address the coupled turbulent momentum, heat and species transport during molten metal-pool convection in association with continuous evolution of solid-liquid interface typically encountered in high energy materials processing applications. The turbulent aspect is handled by a large eddy simulation (LES) model and the phase changing phenomena is taken care of by a modified enthalpy-porosity technique. The proposed finite volume based LES model is subsequently parallelised for effective computational economy. To demonstrate the effectiveness of the present model, a systematic analysis is subsequently carried out to simulate a typical high power laser surface alloying process, where the effects of turbulent transport can actually be realised.
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