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对流换热边界条件下球体内固液相变过程移动热源法求解

  • 白凤武 ,
  • 卢文强
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  • 中国科学院研究生院物理系, 北京 100039

收稿日期: 2002-05-09

  修回日期: 2002-06-12

  网络出版日期: 2003-01-18

基金资助

国家自然科学基金资助项目(No.50176048);国家重点基础研究发展规划项目(No.G200026300)

Solving Solid-Liquid Phase Change Process in Sphere Under Convective Heat Transfer Boundary Conditions by Moving Heat Sources Method

  • Bai Fengwu ,
  • Lu Wenqiang
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  • Department of Physics, the Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received date: 2002-05-09

  Revised date: 2002-06-12

  Online published: 2003-01-18

摘要

应用移动热源法求解了对流换热条件下球体内具有明显相变界面的固液相变问题,分析了球体半径、相变材料潜热、外界对流换热条件对相变过程的影响,并进一步考虑实际相变过程存在的变对流边界条件,构造了一实用解法.为求解相变问题的数值方法提供了一校核其可靠性的新途径,还为实验结果提供了相互比较的数据.该方法及其结果对相变材料的分析与设计具有重要的实用价值.

本文引用格式

白凤武 , 卢文强 . 对流换热边界条件下球体内固液相变过程移动热源法求解[J]. 中国科学院大学学报, 2003 , 20(1) : 13 -21 . DOI: 10.7523/j.issn.2095-6134.2003.1.003

Abstract

The solid liquid phase change process in sphere with moving interface was solved using moving heat sources method in convective boundary conditions. The influences of the radius of sphere, the latent heat of material and the convective conditions on phase change process were analyzed. Considering the variational convective conditions in real solid liquid phase change process, a feasible solution is constructed. This solution can be used to validate numerical method and to present necessary comparable data for the experimental results. The method and the calculated results have important practical values for the design and applicationof phase change materials.

参考文献

[1] 张寅平,胡汉平,等.相变储能--理论和应用.合肥:中国科学技术大学出版社,1996

[2] 陈伟珂,郭新川,等,球体内混合有机材料相变传热特性分析.太阳能学报,2001,21(1)

[3] P Charunyakorn, S Sengupta, S K Roy. Forced convection heat transfer in microeneapsulated phase change material slurries: flow in circular ducts. Int J Heat Mass Transfer, 1991,34(3): 819~833

[4] Zhang Yu-Wen, Amir Faghri. Analysis of Forced Convection Heat Transfer in Microeneapsulated Phase Change Material Suspensions. Journal of Thermophysics and Heat Transfer, 1995, 9 (4): 727~732

[5] M N奥齐西克著.俞昌铭主译.热传导.北京:高等教育出版社,1982.175~176;453~457

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