Similar to Joule heating, induction heating provides one further important modification. The currents that heat the material are induced by means of electromagnetic induction. This means that no physical contact is required between work piece and induction coil, making this process suitable for processes where a high degree of cleanness is required, such as in semiconductor manufacturing. Induction heating can also improve efficiency by avoiding heat losses from the surfaces that would provide the electrical connection.
Modeling induction heating requires coupling two different fields of physics:
electromagnetism and heat transfer. Some material
properties can depend on heat, necessitating a two-way coupling of these physical phenomena.