Computational modelling of transport phenomena in high energy materials processing application: large eddy simulation and parallelisation. (6th December 2010)

• Record Type: Journal Article
• Authors: Chatterjee, Dipankar
• Is Part Of: International journal of computational materials science and surface engineering. Volume 4:Number 1(2011)
• Page Start: 1
• Page End: 22
• Publication Date: 2010-12-06
• Subjects: large eddy simulation -- LES -- turbulence -- laser surface alloying -- parallel processing; Surfaces (Technology) -- Periodicals; Materials -- Computer simulation -- Periodicals; Materials -- Mathematical models -- Periodicals; 620.110151
• Languages: English
• ISSNs: 1753-3465

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.