determinat ion of temperature distribution around a moving heat source

in this paper, the temperature distribution around a moving heat source had been investigated including the phase change and non phase change . in non-phase change state, the governing equation was converted to finite difference equation by finite volume method and the equation was solved by alternating direction implicit method. this method was unconditionally stable . in phase change state, the problem was formulated by enthalpy function and finite difference equation was solved with the explicit method because of the stability criteria. the effect of source heat, source velocity, preheat temperature, variable physical properties, on temperature distribution were examined, also their effect on melting pool width and heat affected zone were investigated. the application of these concepts in industry was explained