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首页> 外文期刊>Journal of Heat Transfer >Coupling Effects of Viscous Sheet and Ambient Fluid on Boundary Layer Flow and Heat Transfer in Power-Law Fluids
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Coupling Effects of Viscous Sheet and Ambient Fluid on Boundary Layer Flow and Heat Transfer in Power-Law Fluids

机译：粘性薄板与环境流体的耦合作用对幂律流体的边界层流动和传热的影响

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摘要

This paper investigates the flow and heat transfer of power-law fluids over a stretching sheet where the coupling dynamics influence of viscous sheet and ambient fluid is taken into account via the stress balance. A modified Fourier's law is introduced in which the effects of viscous dissipation are taken into account by assuming that the thermal conductivity is to be shear-dependent on the velocity gradient. The conditions for both velocity and thermal boundary layers admitting similarity solutions are found, and numerical solutions are computed by a Bvp4c program. The results show that the viscous sheet and rheological properties of ambient fluids have significantly influences on both velocity and temperature fields characteristics. The formation of sheet varies with the viscosity of fluid and draw ratio, which then strongly affects the relations of the local skin friction coefficient, the local Nusselt number, and the generalized Reynolds number. Moreover, for specified parameters, the flow and heat transfer behaviors are discussed in detail.
机译：本文研究了幂律流体在拉伸片材上的流动和传热，其中通过应力平衡考虑了粘性片材与环境流体的耦合动力学影响。引入了修正的傅立叶定律，其中通过假设热导率与速度梯度有关，来考虑粘性耗散的影响。找到速度和热边界层都允许相似解的条件，并通过Bvp4c程序计算数值解。结果表明，环境流体的粘滞性和流变特性对速度场和温度场特性都有显着影响。薄片的形成随流体的粘度和拉伸比而变化，这随后强烈影响局部皮肤摩擦系数，局部Nusselt数和广义雷诺数的关系。此外，对于指定的参数，将详细讨论流动和传热行为。

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  • 来源
    《Journal of Heat Transfer》 |2019年第6期|061701.1-061701.7|共7页
  • 作者

    Liu Xiaochuan; Zheng Liancun; Chen Goong; Ma Lianxi;

  • 作者单位

    Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China;

    Univ Sci & Technol Beijing, Sch Math & Phys, Beijing 100083, Peoples R China;

    Texas A&M Univ, Dept Math, College Stn, TX 77843 USA|Texas A&M Univ, Inst Quantum Sci & Engn, College Stn, TX 77843 USA;

    Blinn Coll, Dept Phys, Bryan, TX 77805 USA;

  • 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

    coupling dynamics; viscous sheet; power-law fluids; flow and heat transfer;

    机译：耦合动力学;粘性板;幂律流体;流动与传热;

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