内燃机活塞不稳定传热数值分析方法  

Unsteady Heat Conduction Analytical Method for Internal-combustion Engine Piston

作　　者：彭智峰[1] 陈国华[1] 杨万里[1] 叶晓明[1] 

机构地区：[1]华中科技大学,武汉430074

出　　处：《柴油机设计与制造》2003年第2期27-30,共4页Design and Manufacture of Diesel Engine

摘　　要：在轴对称不稳定热传导有限元分析模型的基础上,着重分析了内燃机活塞与缸套耦合系统的不稳定传热的各种情形,划分了活塞的网格,考虑了燃气与边界的对流和热辐射非线性热交换条件下运动着的活塞、活塞环与缸套之间的相互作用和影响,可以预测上述系统各部分的温度波动分布,瞬态温度场以及瞬态热流分布。The main topic of this thesis is the analysis about all kinds of state of unsteady heat conduction of the piston and cyclinder-coincidence system in accord with the mode of the shaft -symetrical unsteady heat conduction FEM (finite element measure), and the grid-ding is divided. Then the interaction and influence of the piston, piston ring and the cylinder is taken into consideration in case of the interaction of the fuel and boundary. The distribution of temperature in combustion chamber and the evanescence stated thermal field can be estimated in advance.

关 键 词：内燃机 不稳定传热 燃烧室 有限元分析 活塞 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]