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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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|
|Additional Information:||Copyright of this article belongs to Emerald Insight.|
|Department/Centre:||Division of Mechanical Sciences > Mechanical Engineering|
|Date Deposited:||24 Nov 2009 07:16|
|Last Modified:||19 Sep 2010 04:55|
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