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Impingement of filler dropelts and weld pool dynamics during gas metal arc welding process. (English) Zbl 1064.76624
Summary: A mathematical model and the associated numerical technique have been developed to simulate, for the first time, the dynamic impinging process of filler droplets onto the weld pool in spot gas metal arc welding (GMAW). Filler droplets driven by gravity, electromagnetic force, and plasma arc drag force, carrying mass, momentum, and thermal energy periodically impinge onto the base metal, leading to a liquid weld puddle. Transient weld pool shape and the complicated fluid flow in the weld pool caused mainly by the combined effect of droplet impinging momentum and surface tension are calculated.

76T10 Liquid-gas two-phase flows, bubbly flows
76X05 Ionized gas flow in electromagnetic fields; plasmic flow
76M12 Finite volume methods applied to problems in fluid mechanics
80A20 Heat and mass transfer, heat flow (MSC2010)
80A22 Stefan problems, phase changes, etc.
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