Determination of Radiative Properties for Water-Wall Plasma Arc Lamp Modeling

Vortex-stabilized water-wall arc lamps are used in rapid thermal processing applications. A key issue is to develop more accurate models so that better control is achieved of the temporal radiation exiting the lamp. The current problem is the lack of a practical means of incorporating radiative transfer. This paper shows that it is possible to obtain a good qualitative understanding of the arc and reasonable quantitative agreement with experiments using the net emission coefficient method to model the isothermal core region of the plasma and a modified version of the mean absorption method to model the surrounding colder regions of the plasma.