Modelling of turbulent transport in arc welding pools

Abstract

In this paper, we present a modified k‐ε 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‐ε 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.

Citation

Chakraborty, N., Chakraborty, S. and Dutta, P. (2003), "Modelling of turbulent transport in arc welding pools", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 13 No. 1, pp. 7-30. https://doi.org/10.1108/09615530310456741