effect of heat flux models on temperature distribution and fluid flow during gas tungsten arc welding

a three dimensional model is developed to predict temperature distribution and fluid flow during gas tungsten arc welding in order to analyze the influence of heat flux model on the geometrical appearance of weld pools and temperature distribution two types of heat sources with different natures based on gaussian surface heat flux and volumetrica goldak's double ellipsoid heat flux distributions are employed then these heat flux schemes are implemented into the model for simulation of GTA welding of AA1050 using FLUENT -CFD software the transient temperature distribution and temperature variations during welding for each heat flux model are predicted.

Keywords:

gas tungsten are welding , fluid flow , heat transfer , volumetric heat flux , surface heat flux , aluminium