Two‐dimensional finite element analysis of microwave heating

Transient temperature profiles for long rods of lossy dielectric materials with thermally-dependent dielectric properties exposed to uniform plane waves are obtained. Maxwell's equations and the heal equation are simultaneously solved using the finite element method to predict the power absorbed and the resulting temperalure rise in samples of square and circular cross-section. Following the method introduced recently, we derive an exact radiation boundary condition which is independent of the rod cross-section