| 2003 №06 (11) | 2003 №06 (02) |
The Paton Welding Journal, 2003, #6, 2-5 pages
Mathematical modelling of absorption of gases by electrode metal drop
I.K. Pokhodnya, O.M. Portnov
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
The mathematical model is composed from a combined solution of the system of equations of gas mass transfer in metal, in the near-surface Knudsen layer, adjacent to metal, and in the atmosphere of arc discharge. Modelling of metal evaporation and gas absorption is based on a combined solution of Boltzmann kinetic equation for Knudsen layer and system of equations of continuum for the ambient atmosphere using numerical methods. The effect of gas content in atmosphere and drop temperature on the kinetics of the absorption process has been investigated.
Keywords: arc welding, gas absorption, mathematical modelling, mass transfer equation, kinetics of absoption of gases, Knudsen layer
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