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多孔饱和矩形管中粘性随温度变化对熵产、热和流体流动的影响

K·霍曼 H·戈金西

K·霍曼, H·戈金西. 多孔饱和矩形管中粘性随温度变化对熵产、热和流体流动的影响[J]. 应用数学和力学, 2007, 28(1): 61-69.
引用本文: K·霍曼, H·戈金西. 多孔饱和矩形管中粘性随温度变化对熵产、热和流体流动的影响[J]. 应用数学和力学, 2007, 28(1): 61-69.
K. Hooman, H. Gurgenci. Effects of Temperature-Dependent Viscosity Variation on Entropy Generation,Heat,and Fluid Flow Through a Porous-Saturated Duct of Rectangular Cross-Section[J]. Applied Mathematics and Mechanics, 2007, 28(1): 61-69.
Citation: K. Hooman, H. Gurgenci. Effects of Temperature-Dependent Viscosity Variation on Entropy Generation,Heat,and Fluid Flow Through a Porous-Saturated Duct of Rectangular Cross-Section[J]. Applied Mathematics and Mechanics, 2007, 28(1): 61-69.

多孔饱和矩形管中粘性随温度变化对熵产、热和流体流动的影响

详细信息
    作者简介:

    K·霍曼(联系人.Tel/Fax:+61-402-206033;E-mail:k.hooman@uq.edu.au);H·戈金西,教授(Tel/Fax:+61-7-33653607;E-mail:h.gurgenci@uq.edu.au).

  • 中图分类号: O357.3

Effects of Temperature-Dependent Viscosity Variation on Entropy Generation,Heat,and Fluid Flow Through a Porous-Saturated Duct of Rectangular Cross-Section

  • 摘要: 研究了充填流体-饱和多孔介质的矩形管中,随温度变化的粘性对充分发展强迫对流的影响.采用Darcy流动模型并假设粘性-温度为倒线性关系.管壁视为均匀热通量,即Kays和Crawford称为的H边界条件.当流体粘性随温度升高而降低时,管壁的Nusselt数增大.求解速度和温度分布时,利用热力学第二定律求解了局部平均熵产率.根据Brinkman数、Péclet数、粘性变化数、无量纲管壁热通量和管道截面宽高比,给出了熵产率、Bejan数、传热不可逆性和流体流动不可逆性的表达式.这些表达式是该类问题参数研究的基础.可以看出,当管道截面宽高比的增大使熵产率减小时,方形管中流动产生的熵大于矩形管,这类似于Ratts和Raut研究的明流(clear flow)情况.
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出版历程
  • 收稿日期:  2006-03-15
  • 修回日期:  2006-09-07
  • 刊出日期:  2007-01-15

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