摘要
研究了两点时间差分格式的瞬态导热温度场有限元法数值解的稳定性和振荡现象，推导出消除振荡的方法：将时间差分格式的加权系数σ与时间步长△ｔ分别和温度振荡联系起来，得出变σ和变△ｔ的函数关系式。实践证明该方法简便易行，精度高。
The stability and oscillation of numerical finite element solution of transient conduction temperature field with two-point time deference scheme have been investigated.The weighted factor of the time diference scheme σ and the time step △ t are correlated to the temperature oscillation respectively.Thus the functions of variable σ and △ t are obtained.Its application demonstrates the simplicity in programming,high aecuracy and econmy of running time.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
1997年第1期95-97,共3页
Journal of Aerospace Power
关键词
瞬态状况
导热性
有限元法
Transient behaviour Heat conduction Finite element methods
