Feßler, RobertRobertFeßlerLeithäuser, ChristianChristianLeithäuserSiedow, NorbertNorbertSiedow2022-10-042022-10-042022https://publica.fraunhofer.de/handle/publica/42721810.1007/978-3-030-99983-4_42-s2.0-85132311904We describe a model for a furnace process which consists of a coupled multiphysics problem for the three phases solid, gaseous and melt with regards to an energy equation, a radiative transfer equation and a Navier-Stokes equation of the flow. Vaporization and an exothermic reaction in the melt are modeled by an effective specific heat capacity which is derived a priori by solving a system of ODEs. We present numerical results for a demonstrational scenario.enconference paper