Three-Dimensional Analysis of Microwave Heating System with Square-Type Furnace

Several methods for disposal of radioactive and industrial waste have been proposed and in practical use. Among them it is known that the method by fusing and solidifying is very effective. At present, the application of microwave heating is under development as a means of fusing. For design of this heating system and choice of operating conditions, it is indispensable to know exactly the characteristics of the electromagnetic field. But the electromagnetic field inside such a system is very complicated because of its three-dimensional structure with various medium conditions. For analysis of complicated fields, numerical methods are generally known to be useful. The analysis by Bergeron's method has been shown to be effective for such problems involving complex boundary and medium conditions in three-dimensional space. In this paper, we show the Bergeron's formulation of the microwave heating furnace system with the heated material and show the fundamental characteristics of the electromagnetic field in the system.