Title: Computational modelling of transport phenomena in high energy materials processing application: large eddy simulation and parallelisation

Authors: Dipankar Chatterjee

Addresses: Simulation and Modeling Laboratory, Central Mechanical Engineering Research Institute, Council of Scientific and Industrial Research (CSIR), Durgapur-713209, India

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.

Keywords: large eddy simulation; LES; turbulence; laser surface alloying; parallel processing; modelling; transport phenomena; high energy materials; materials processing; molten metal pool convection; solid-liquid interface.

DOI: 10.1504/IJCMSSE.2011.037349

International Journal of Computational Materials Science and Surface Engineering, 2011 Vol.4 No.1, pp.1 - 22

Published online: 11 Jan 2015 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article