摘要
介绍了车用电涡流缓速器的结构与工作原理,详细推导了由于电涡流集肤效应的影响导致转子盘上集中分布的内热源强度公式.对转子盘热传导对流散热模型进行了必要的简化,确定了适当的边界条件.利用传热学原理和虚拟边界法得出了电涡流缓速器温度分布的近似解析表达式,并与缓速器台架试验温度时域特性进行比较,结果表明,该表达式能够作为缓速器初始设计温度分布预估式,为电涡流缓速器设计提供依据.
The construction and working principle of a retarder used in automobiles is introduced. The formula of heat generation due to skin effect is deduced and conduction-convection model for the rotor plate is simplified. The boundary condition is set up. The formula of thermal field for eddy current retarder is deduced using principle of heat transfer and virtual boundary method and the result is compared with temperature-time characteristic of retarder on bed test. It shows that the formula can be used as pre-estimated temperature distribution in rotor and can provide design criterion.
出处
《江苏大学学报（自然科学版）》
EI
CAS
北大核心
2005年第2期117-120,共4页
Journal of Jiangsu University：Natural Science Edition
基金
江苏省科技攻关项目(BE2003-042)
镇江市科技计划项目(GY2002041)
关键词
缓速器
温度场
虚拟边界
计算方法
Boundary conditions
Calculations
Mathematical models
Skin effect
Temperature distribution
