Digital simulations of a stationary and a linear weld |
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Authors: | D. K. Aidun G. Ahmadi J. J. Domey |
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Affiliation: | (1) the Department of Mechanical and Aeronautical Engineering, Center for Advanced Materials Processing, Clarkson University, 13699-5727 Potsdam, NY;(2) Corning Inc., USA |
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Abstract: | A computational model was used to simulate stationary and linear gas-tungsten-arc (GTA) welds and to study the effect of surface-tension as well as arc position. The results show that the surface-tension gradient with respect to temperature is a dominating factor in determining the direction of the convective flow within the molten weld pool. Furthermore, a linear-arc movement leads to a convective pattern, which is different from that of a stationary weld. |
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