Modelling of turbulent transport in arc welding pools

Chakraborty, Nilanjan and Chakraborty, Suman and Dutta, Pradip (2003) Modelling of turbulent transport in arc welding pools. In: International Journal of Numerical Methods for Heat and Fluid Flow, 13 (1). 07-30.

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Abstract

In this paper, we present a modified k-epsilon model capable of addressing turbulent weld-pool convection in the presence of a continuously evolving phase-change interface during a gas tungsten arc welding (GTAW) process. The phase change aspects of the present problem are addressed using a modified enthalpy-porosity technique. The k-epsilon model is suitably modified to account for the morphology of the solid-liquid interface. The two-dimensional mathematical model is subsequently utilised to simulate a typical GTAW process with high power, where effects of turbulent transport can actually be realised Finally, we compare the results from turbulence modelling with the corresponding results from a laminar model, keeping all processing parameters unaltered The above comparison enables us to analyse the effects of turbulent transport during the arc welding process.

Item Type:	Journal Article
Publication:	International Journal of Numerical Methods for Heat and Fluid Flow
Publisher:	Emerald Insight
Additional Information:	Copyright of this article belongs to Emerald Insight.
Keywords:	welding;turbulence.
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	24 Nov 2009 07:16
Last Modified:	19 Sep 2010 04:55
URI:	http://eprints.iisc.ac.in/id/eprint/17134

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