To interpret the hydrodynamics of deep penetration welding, an evaporative model is usually used, taking into account the melt flow resulting from the action of high-pressure steam. However, the actual evaporation parameters are several orders of magnitude less than the values ​​required for such a mechanism. Consequently, the evaporation model is a surrogate model, despite it is disguised as a physical one.

Why is the simulation avoided the real physics of the hydrodynamics of the welding process based on capillary mechanisms? Is it too complicated to model? Is this incomprehensible? Too hard interference with personal ambitions?

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