Numerical Simulation of Induction Through-Heater in Dynamic Operation Mode

The numeric model used in this paper is based on the finite element method and is aiming an inductive heating in volume of a cylindrical structure in a dynamic operation mode. Nowadays the induction through-heaters are usually designed to provide the required characteristics in "quasi" steady-state operation mode mainly. However, in industrial practice the heaters can operate under various disturbances more than ha$ of time, so the transient process play significant role in effectiveness and quality of the heating. Investigation of dynamic characteristics of the heaters in dynamic modes can be only done by numerical modeling based on special algorithms providing a time loop additionally to coupling between electromagnetic and thermal analysis. Such numerical models have been developed and used for investigation of dynamic modes for heating billets. The results of numerical simulation can be used for design of induction through-heaters and improvement of their characteristics in dynamic operation modes. [PUBLICATION ABSTRACT]