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中国科学院大学学报 ›› 2003, Vol. 20 ›› Issue (4): 419-424.DOI: 10.7523/j.issn.2095-6134.2003.4.004

• 论文 • 上一篇    下一篇

一类等温进口条件下的非傅立叶导热问题

范庆梅, 卢文强   

  1. 中国科学院研究生院物理系, 北京100039
  • 收稿日期:2002-11-19 发布日期:2003-07-10
  • 基金资助:

    国家自然科学基金 (59976043);国家重点基础研究发展规划项目(G20002630 0)资助

A Kind of Non-Fourier Heat Conduction Problem under Isothermal Inlet Condition

Fan Qingmei, Lu Wenqiang   

  1. Department of Physics, Graduate School of the Chinese Academy of Sciences, Beijing 100039,China
  • Received:2002-11-19 Published:2003-07-10

摘要:

用已发展的双倒易边界元和Laplace变换、反变换相结合的方法求解非傅立叶导热,对于一类等温进口条件下的问题,数值预示了热波导热、非傅立叶导热和傅立叶扩散的温度场随时间推进的不同特征,并且发现了温度变化前缘的推进速度存在着明显的差异.

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关键词: 非傅立叶导热, DPL模型, 温度场特征, 前缘推进速度

Abstract:

By using the developed numerical method, w hich combines the dual reciproci ty boundary element method (DRBEM)with Laplace transform and inverse transform, a kind of non-Fourier heat conduction problem under iso thermal inlet condi tion is numerically simulated.The dif ferent characters fo r thermal ware heat conduct ion, non-Fourier heat conduct ion and Fourier diffusion is presented, the obvious difference between their marching velocities of the temperature f ront is found.

Key words: non-Fourier heat conduction, Dual-Phase Lag model, characters of the temperature field, marching velocity of the temperature front

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