空间轴对称非稳定温度场有限单元法计算
来源期刊:中南大学学报(自然科学版)1980年第3期
论文作者:李克敌
文章页码:101 - 109
关键词:子域; 空间轴对称; 精确解; 有限差分; 计算公式; 结点温度; 面积坐标; 常微分方程组; 非稳定温度场; 有限单元法
摘 要:根据有限子域热量平衡原理及时段上向后差抛物线差分公式,本文推出了空间轴对称非稳定温度场有限单元—有限差分计算公式。利用BCY语言编写了程序,并在TQ—6机(655机)上计算了例题,结果与精确解很接近。公式和程序可供生产实际参考。
Abstract: On the basis of heat balance principle of finite subfields and parabolicformula of backwards finite difference between time intervals,the finiteelement finite difference computing formulas for three dimensional axisymmetrical unsteady temperature fields have been derived in this article.Byusing the BCY language,the computing program has been compiled and the exa-mples have been counted by TQ—6(655)computer.The results approach ve-ry nearly to the exact solutions.The formulas and program could be offeredas a reference to production practice.