Modified Hazen-Dupuit-Darcy Model for Forced Convection Of a Fluid With Temperature- Dependent Viscosity

Arunn Narasimhan; Jose L. Lage

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Modified Hazen-Dupuit-Darcy Model for Forced Convection Of a Fluid With Temperature- Dependent Viscosity

机译：具有温度相关粘度的流体强迫对流的修正Hazen-Dupuit-Darcy模型

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摘要

We investigate numerically the global pressure-drop of fluids with temperature dependent viscosity, flowing through a pours medium channel bounded by two parallel isoflux surfaces. By reviewing the development of the Hazen-Dupuit-Dary (HDD) equation we bring to light the inappropriateness of the model in estimating the global pressure-drop of fluids with temperature dependent viscosity. Albeit this observation, we tested the accu- racy of the HDD model in comparison with numerical results by using three alternatives, namely (1) fluid viscosity determined at the average bulk temperature, (2) fluid viscosity determined at the log-mean bulk temperature and (3) fluid viscosity replaced by a channel-length averaged fluid viscosity.

机译：我们用数值方法研究了温度随粘度变化的流体的总体压降，流经由两个平行的等流量表面所界定的浇注介质通道。通过回顾Hazen-Dupuit-Dary（HDD）方程的发展，我们发现了模型在估计粘度随温度变化的流体的总体压降时的不适当性。尽管观察到了这一点，我们还是通过三种选择来测试HDD模型与数值结果的准确性，即（1）在平均体温下确定的流体粘度，（2）在对数均值体温下确定的流体粘度（3）用通道长度平均流体粘度代替流体粘度。

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来源
《Journal of Heat Transfer》 |2001年第1期|p.31-38|共8页
作者
Arunn Narasimhan; Jose L. Lage;
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作者单位

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类热力工程、热机;
关键词
Channel Flow; Forced Convection; Heat Transfer;

机译：渠道流;强制对流;传播热量;

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2. Heat transfer analysis for Falkner-Skan boundary layer nanofluid flow past a wedge with convective boundary condition considering temperature- dependent viscosity [J] . Waqar A Khan, Mohammed AA Hamad, Mohammed Ferdows Proceedings of the institution of mechanical engineers . 2013,第n1期

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3. Effect of temperature-dependent viscosity on forced convection heat transfer from a cylinder in crossflow of power-law fluids [J] . A.A. Soares, J.M. Ferreira, L. Caramelo, International Journal of Heat and Mass Transfer . 2010,第21a22期

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4. Forced convection of fluids with temperature-dependent viscosity through porous media [C] . Arunn Narasimhan, Jose L.Lage, Donald A.Nield National heat transfer conference;NHTC2000 . 2000

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8. Scaling of Temperature- and Stress-Dependent Viscosity Convection [R] . Solomatov, V. S. 1995

机译：温度和应力相关的粘度对流的缩放

Modified Hazen-Dupuit-Darcy Model for Forced Convection Of a Fluid With Temperature- Dependent Viscosity

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