铁道科学与工程学报Issue(6)：116-121,6.
列车车顶绝缘子气流场分布及其对积污的影响
The air flow field distribution of electric loco motive roof insu lator and its i mpact on the conta mination
摘要
Abstract
The air flow field distribution of electric locomotive roof insulator has a great impact on its contamination characteristic at high speed.A 3D flow model of roof insulator was established in this paper,to simulate the situa-tion of air flow field distribution and contamination particles collision with the surface of the insulator at different speeds by finite element simulation.Combined with field research,the results show that the main factor of the con-tamination characteristics is pressure distribution of the insulator on the leeward side.Negative pressure on the lee-ward side of sheds,contamination particle collision rate and the actual amount of the contamination exhibit a law that large in the two terminals but small in the middle.Meanwhile,as the speed increases,the negative pressure value on the leeward side of sheds and contamination particle collision rate present an increasing trend.关键词
车顶绝缘子/气流场/积污特性/SST模型Key words
electric locomotive roof insulator/air flow field/contamination characteristic/SST model分类
信息技术与安全科学引用本文复制引用
谭黎维,李玉平,徐小燕,唐文韬..列车车顶绝缘子气流场分布及其对积污的影响[J].铁道科学与工程学报,2014,(6):116-121,6.基金项目
湖南省自然科学基金委员会与株洲市政府自然科学联合基金资助项目 （）
