Numerical Simumulation Of Temperature Field Of Plate In Mediate Thickness Under Transverse Magnetic Flux Induction Heating

With the development of technology, the requirement for manufacturing is higher , heat treatment is emphasized for its important role to qualify the products. The induction heating generates heat by means of Joule heating effect resulting from an eddy current. It is widely used in industrial operations due to its high efficiency, precise control, low pollution properties and good security. However, the design of an induction heating system based on experiments can be tedious, time-consuming an expensive. The numerical simulation of the induction heating is of great value because the required technics and precision are higher.In this thesis, mathematical model is offered for solving laminal workpiece in transverse flux heating process on the basis of the characteristics of induction heating . To improve the efficiency of eddy field calculation with magnetic vector potential, necessary simplification is applied. And the eddy current field and temperature field mathematical model are established in induction heating process. The finite element model of 3-D and non-liner coupling field is applied.The analysis of the sequential coupling of electromagnetic and thermal field is carried out using'physics environment'of ANSYS software. Through observing the distribution of electromagnetic field, eddy current field and temperature field, the result which is contrast with theory value proves the validity of the model and method.The numerical simulation of electromagnetic-thermal coupling field of laminal workpiece in static induction heating process is studied and realized. Three heating processes are simulated, including magnetic workpiece in different frequency, different current density and air-gaps, respectively .The calculation results have been simulated by analyzed many aspects such as the heating speed and the distribution of temperature. The results show that the computer simulation by finite element method could be applied to static workpiece induction heating process and has the instruction significance to the actual project.