过滤单元形状对其微波再生特性的影响  

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

作　　者：王曙辉[1,2] 徐孟[1] 彭庆国 余明果[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,湖南长沙410082 [2]湖南大学机械与运载工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2015年第4期27-33,共7页Journal of Hunan University:Natural Sciences

基　　金：湖南省自然科学基金资助项目(12JJB008)

摘　　要：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.Based ticulate filter, the fi filter unit on the inf on ter a new regeneration model with microwave heating for rotary unit-block diesel par- body wall temperature along the radial distribution and structure parameters of the uence of microwave heating during the regeneration process were obtained by humeri cal 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.

关 键 词：微粒捕集器 过滤单元 再生时间 再生效率 数值模拟 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]