The finite-difference time-domain method(FDTD)is a numerical technique for solving Maxwell's equation in a discrete space and time frame.It has been used extensively in the analysis of electrically large structures in the microware domain,and has recently been applied to optical problem.This method has a various advantages.For instance,it is easily understood and implemented;compared with other numerical methods,the memory elements of computer used by this method is much less.The paper is designed to introduce the principle of finite-difference time domain method and presents the Maxwell equations'numerical results in electromagnetic field.

本文从理论计算出发,对高频电流作了多方面的研究.结果表明,由于趋肤效应,感应加热的热量是从金属表层传递到内部的,并非金属内部同时加热,这对于感应加热的广泛应用有理论上的指导意义.