Hg. Fan et R. Kovacevic, DYNAMIC ANALYSIS OF GLOBULAR METAL TRANSFER IN GAS METAL ARC-WELDING - A COMPARISON OF NUMERICAL AND EXPERIMENTAL RESULTS, Journal of physics. D, Applied physics (Print), 31(20), 1998, pp. 2929-2941
A mathematical model to describe the globular transfer in gas metal ar
e welding is developed. This work is both theoretical and experimental
. Using the volume-of-fluid (VOF) method, the fluid-flow and heat-tran
sfer phenomena during the impingement of a droplet on a solid substrat
e, are striking, the impingement of multiple droplets on the molten po
ol and finally the solidification after the are extinguishes are dynam
ically studied. A He-Ne laser in conjunction with the shadow-graphing
technique is used to observe the metal-transfer processes. Theoretical
predictions and experimental results are shown to be in good agreemen
t, suggesting that the theoretical treatment of the model is sound.