过滤单元形状对其微波再生特性的影响

针对一种新型的柴油机微粒捕集器单元块旋转式的过滤体微波加热再生模型,采用数值模拟方法,对再生过程中过滤体壁面温度沿径向分布和过滤体单元的形状结构参数对微波加热再生过程的影响规律进行数值模拟研究.结果表明:过滤体壁面温度从外弧面向内弧面逐渐升高,且整个过滤体的峰值温度出现在内弧面;较小的过滤体圆心角将会缩短再生时间;较小的过滤体单元长度以及较小的过滤体单元厚度都可使再生时间缩短.

Effect of the Filter Unit Structure on Its Regenerative Properties with the Microwave

Based on a new regeneration model with microwave heating for rotary unit-block diesel particulate filter, the filter body wall temperature along the radial distribution and structure parameters of the filter unit on the influence of microwave heating during the regeneration process were obtained by numerical simulation. The results show that the wall temperature gradually increases from the outer surface to the inward surface and the peak temperature emerges in the inward surface; the smaller central angle will shorten the regeneration time; the smaller length and the smaller thickness can shorten the regeneration time. The results provide important theoretical guidance for the optimization of the regeneration process.