In RF Heating or Microwave Heating, the material is subjected to an electromagnetic wave that causes the molecules in the material to oscillate, thereby generating heat. This phenomenon has applications ranging from microwave ovens, through therapeutic medical treatment, to material processing in the manufacturing industry.
One of the most important advantages with microwave heating is that it provides a fast and uniform heating process, in contrast to traditional conduction heating. Modeling such phenomena includes the coupling of electromagnetic waves with heat transfer.
The animation shows the temperature field in a potato during the heating process in a microwave oven. The slice and boundary plots show how the electric field propagate, while the plot on the potato shows its temperature. The time scale of the oscillating waves has been adjusted,