摘要
本文在推导出平面瞬态温度场问题的边界积分方程的基础上,对时间域及空间域进行了离散数值处理,形成边界元方程,并对S195柴油机气缸盖鼻梁区在过渡工况下的非稳态温度场进行了分析计算。结果表明公式推导及编程是成功的,证明边界元用于工程中瞬态温度场问题的分析是十分有效的。
The boundary integral equation of two dimension transient heat conduction problem is derived. By processing the discrete data resulted from this equation, forms a boundary element equation. On this basis, develops a program to car-culate the unsteady temperature field in bridge zone between valve seats of the cylinder head of 195 type diesel engine. The results show that the formula and program developed in this paper are valid, so the boundary element method is powerful for analyzing the transient temperature field in engineering.
关键词
边界元法
汽缸盖
温度场
柴油机
boundary element method
transient heating
temperature field
diesel engines
cylinder heads
