周期性瞬态导热有限元计算网格剖分规则研究  

Research on gridding plot rule of finite element computation for periodic transient heat transfer

作　　者：白敏丽[1] 董卫军[1] 

机构地区：[1]大连理工大学动力系,辽宁大连116024

出　　处：《热科学与技术》2003年第1期38-41,共4页Journal of Thermal Science and Technology

基　　金：国家自然科学基金 ( 5 0 2 76 0 0 7) ;辽宁省自然科学基金 ( 2 0 0 110 10 5 8)

摘　　要：对周期性瞬态导热的半无限大物体的级数解进行了理论分析 ,结合有限元算法 ,证明了周期性瞬态导热的温度波动深度和有限元网格尺度都具有相似性 ,从而给出了保证周期性瞬态导热问题有限元求解精度的网格剖分规则 ,并应用该规则对发动机燃烧室壁进行了实例计算。This paper gives a theoretical analyse about half infinite series solution of periodic transient heat conduct. Combines with finite element arithmetic,it proves that temperature fluctuate depth and finite element gridding scale of periodic transient heat conduct both have comparability. Thus it gives out the gridding plot rule that guarrantees finite element solving precision of periodic transient heat conduct problems, and by applying this rule has done an instance calculation about engine firebox wall.

关 键 词：周期性瞬态导热 有限元 网格剖分规则 发动机 燃烧室 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]