一维微波高温加热模型及其仿真

One-dimensional High Temperature Microwave Heating Model and Simulation

建立了一维微波高温加热模型,并利用Galerkin有限元方法求解了有源能量平衡方程。仿真结果表明,在绝热条件下被处理材料内部的最高温度比非绝热条件下大,而最大温差比非绝热条件下小;在绝热条件下,当微波双向入射加热时,材料内部温度分布比单向入射加热时均匀;微波加热的均匀性与待处理材料的介电损耗和热传导系数有关。

In this paper, a one-dimensional microwave high temperature heating model is presented, and the energy balance equation for a microwave assisted heating source is solved using Galerkin finite element method. Results from the simulation show that the maximum temperature of insulated dielectric materials is larger than non-insulated materials, while the temperature difference follows the reverse trend. In the insulated condition and when the microwaves approach from multiple directions, the temperature distribution within the dielectric materials is more uniform than when from one direction. The uniformity of microwave heating is relative to the dielectric loss and thermal conductivity of the irradiated material.