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首页> 外文期刊>Journal of Heat Transfer >Thermally Developing Heat Transfer With Nonlinear Viscoelastic and Newtonian Fluids With Pressure-Dependent Viscosity
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Thermally Developing Heat Transfer With Nonlinear Viscoelastic and Newtonian Fluids With Pressure-Dependent Viscosity

机译：非线性粘弹性和牛顿流体的热发展传热，其压力依赖于粘度

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摘要

A semi-analytical solution of the thermal entrance problem with constant wall temperature for channel flow of Maxwell type viscoelastic fluids and Newtonian fluids, both with pressure dependent viscosity, is derived. A Fourier–Gauss pseudo-spectral scheme is developed and used to solve the variable coefficient parabolic partial differential energy equation. The dependence of the Nusselt number and the bulk temperature on the pressure coefficient is investigated for the Newtonian case including viscous dissipation. These effects are found to be closely interactive. The effect of the Weissenberg number on the local Nusselt number is explored for the Maxwell fluid with pressure-dependent viscosity. Local Nusselt number decreases with increasing pressure coefficient for both fluids. The local Nusselt number Nu for Newtonian fluid with pressure-dependent viscosity is always greater than Nu related to the viscoelastic Maxwell fluid with pressure-dependent viscosity.
机译：推导了具有恒定压力的粘度的麦克斯韦型粘弹性流体和牛顿流体通道流动的壁温恒定的热入口问题的半解析解。提出了傅里叶-高斯拟谱方案，并用于求解变系数抛物线偏微分能量方程。对于包括粘性耗散的牛顿情况，研究了努塞尔数和体温对压力系数的依赖性。发现这些效果是紧密交互的。对于具有压力依赖性粘度的麦克斯韦流体，探索了魏森伯格数对局部努塞尔特数的影响。两种流体的局部努塞尔数均随压力系数的增加而减小。与压力有关的粘度的牛顿流体的局部努塞尔数Nu总是大于与压力有关的黏弹性麦克斯韦流体的Nu值。

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  • 来源
    《Journal of Heat Transfer》 |2018年第10期|101701.1-101701.7|共7页
  • 作者

    Dennis A. Siginer; F. Talay Akyildiz; Mhamed Boutaous;

  • 作者单位

    Fellow ASMEDepartamento de Ingeniería Mecánica,Centro de Investigación en Creatividad yEducación Superior,Universidad de Santiago de Chile,Santiago, Chile,Department of Mathematics andStatistical Sciences,Department of Mechanical,Energy and Industrial Engineering,Botswana International University ofScience and Technology,Palapye, Botswana;

    Department of Mathematics and Statistics,Al-Imam University,Riyadh, Saudi Arabia;

    Université de Lyon,CNRS, INSA-Lyon;

  • 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
  • 关键词

    Pressure; Fluids; Viscosity; Energy dissipation; Temperature;

    机译：压力;流体;粘度;能量耗散;温度;

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