纺织学报 ›› 2011, Vol. 32 ›› Issue (10): 57-0.

• 纺织工程 • 上一篇    下一篇

考虑辐射衰减特征的隔热防护织物有效导热系数简化模型

朱方龙   

  1. 中原工学院
  • 收稿日期:2010-10-12 修回日期:2011-07-12 出版日期:2011-10-15 发布日期:2011-10-24
  • 通讯作者: 朱方龙 E-mail:zhufanglong_168@163.com
  • 基金资助:

    国家级

A simple model for effective thermal conductivity of thermal protection fabrics considering radiation attenuation characteristics

  • Received:2010-10-12 Revised:2011-07-12 Online:2011-10-15 Published:2011-10-24

摘要: 高温下辐射传热对织物热传递过程贡献显著。针对火灾等高温环境下的耐高温防护织物内部热辐射渗透衰减问题进行了分析,应用有限差分法建立了隔热防护织物的数值分析型。通过数值求解传热方程,计算了织物的稳态有效导热系数。本文的计算结果与实验结果吻合较好,可以为高温火灾环境下防护织物及热防护系统的优化设计提供理论参考。

Abstract: Thermal radiation makes a great contribution to heat transfer within protective fabrics under high temperature conditions. The thermal attenuation within the high-temperature fabric is investigated under high flux conditions in the present study. A numerical model analysis of thermal protective fabric is given by using one-dimensional finite differential technique. The governing heat transfer equations are solved numerically and effective thermal conductivity is calculated from the steady-state results. Predicted results are in good agreement with experimental data and the results are helpful to the optimum design of thermal protective fabrics and thermal protection system (TPS).

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