摘要
在推导出轴对称势问题的基本解及边界积分方程的基础上,本文采用二次等参插值函数进行离散,形成轴对称热传导问题的边界元方程,编制了包含三类边界条件在内的轴对称边界元分析程序,最后对195柴油机活塞温度场进行了计算。结果表明,边界元法分析活塞温度场,不仅计算准备工作量比有限元大为减少,而且精度高、计算时间短,尤其采用二次等参元后,其优点更加突出。
On the basis of derived boundary integral equation and the fundamental solution of axisymmetric potential problem, the boundary element equations of heat conduction problem with isoparametric quadratic element were deduced. The corresponding computer program with three kinds of boundary conditions was developed, and with which the temperature field of 195-type diesel engine piston was calculated. It was shown that Compared with finite element method, boundary element method is more accurate, needs less cpu time and data preparation, especially with isoparametric quadratic element.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
1991年第1期77-82,共6页
Transactions of Csice
关键词
内燃机
活塞
温度场
边界元
分析
Internal combustion engine
Piston
Temperature field
Boundary element method
Isoparametric quadratic element
