轮胎微波硫化圆柱谐振腔设计及数值模拟研究

根据圆柱形谐振腔频率公式,选择模式数大于或等于9、简并比为0的10组谐振腔尺寸,运用COMSOL Multiphysics软件对选定尺寸谐振腔内轮胎微波硫化过程进行数值模拟,得到微波硫化过程中轮胎温度分布、轮胎体平均温度、微波利用率和最大温差。数据分析表明:轮胎体平均温度与微波利用率呈现良好的一次函数关系;半径为652mm、高度为470 mm的圆柱形谐振腔内的轮胎最大温差最小,温度分布最为均匀,加热效果最优。

The design of cylinder resonator and research on numerical simulation of tyre during microwave vulcanization process

According to the formula of cylinder resonator frequency, 10 different sizes of resonator with the mode number equal to or greater than 10 and degeneracy ratio as 0 were chosen. After numerical simulation of tyre during microwave vulcanization process in a given resonator by the COMSOL Multiphysics, some statistics were gained, including temperature distribution of tyre, average temperature of tyre, microwave utilization and the maximum difference of temperature. Analysis on these statistics contributed to the finding that the average temperature of tyre and microwave utilization present linearity; The resonator with 652-millimeter-long radius and 470-millimeter-long height enabled tyre to get the lowest maximum difference of temperature, the highest uniformity of temperature distribution and the best heating performance. As a result, the final radius was identified as 652mm, and the height as 470mm.