本文研究矩形、圆形平面内存在周期性变化的内热源时,温度场的计算问题。 研究的基本方法是:首先把问题线性化,求出平面内任意位置上存在一简谐变化的点热源和某局部区域内热源均匀分布时,平面温度场的解析表达式;然后利用叠加原理,计算热源任意周期变化和热源在平面内任意不均匀分布时的温度场;并用实验验证了计算方法的正确性。 This paper studies the calculation of the temperature field in the presence of periodically changing internal heat sources in a rectangular or circular plane. The basic method of the study is as follows: Firstly, the problem is linearized, and a point heat source with a simple harmonic change at any position in the plane and an analytical expression of the plane temperature field are obtained when the heat source is uniformly distributed in a certain area. Then by using the superposition principle, Calculate the temperature field when any periodic change of heat source and heat source are inhomogeneous distribution in the plane. The correctness of the calculation method is verified by experiments.