ISSN:
0961-5539
Source:
Emerald Fulltext Archive Database 1994-2005
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this paper, we present a modified k-? 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-? 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1108/09615530310456741
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