计算物理 ›› 2006, Vol. 23 ›› Issue (4): 451-456.

• 研究论文 • 上一篇    下一篇

时域自适应精细算法求解对流热传导问题

赵潇, 杨海天, 高强   

  1. 大连理工大学工程力学系, 辽宁 大连 116023
  • 收稿日期:2005-01-28 修回日期:2005-08-10 出版日期:2006-07-25 发布日期:2006-07-25
  • 作者简介:赵潇(198l-),男,辽宁,硕士生,从事固体力学方面的研究.
  • 基金资助:
    国家自然科学基金(10172024);教育部骨干教师资助计划(2000-65);教育部重点基金(99149);973项目NKBRSF(G1999032805),重点基金(100320300);辽宁省中青年学术带头人基金资助项目

Solving Convective Heat Transferwith a Self-adaptive Precise Algorithm in the Time Domain

ZHAO Xiao, YANG Hai-tian, GAO Qiang   

  1. Department of Engineering Mechanics, State Key Lab of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 110023, China
  • Received:2005-01-28 Revised:2005-08-10 Online:2006-07-25 Published:2006-07-25

摘要: 应用时域自适应精细算法求解对流传热问题.通过展开技术,可更准确地描述变量随时间的变化,同时将时空耦合的初边值问题转化为一系列的空间边值问题,并采用有限元方法递推求解.自适应技术可弥补时间步长不同时可能造成的计算精度损失.并进行了数值检验.

关键词: 时域自适应精细算法, 对流, 热传导

Abstract: A self-adaptive precise algorithm in the time domain is presented for convective heat transfer problems.By expanding variables at a discretized time interval,a time and space coupled problem is converted into a series of boundary value problems.Based on a finite element method,a recursive and self-adaptive computation is conducted without the requirement of additional assumption and iteration for non-linear analysis.A couple of examples with high accuracy are shown.

Key words: self-adaptive precise algorithm, convection, heat transfer

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