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首页> 外文期刊>Journal of Heat Transfer >Effect of Magnetic Field on Heat Transfer in Non-Newtonian Nanofluids Over a Nonisothermal Stretching Wall
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Effect of Magnetic Field on Heat Transfer in Non-Newtonian Nanofluids Over a Nonisothermal Stretching Wall

机译：磁场对非等温拉伸壁上非牛顿纳米流体传热的影响

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摘要

In this study, the effects of magnetic field on combined heat and mass transfer in non-Newtonian nanofluids over a stretching surface with prescribed wall temperature and uniform surface nanoparticle concentration are investigated numerically. A power-law model is used for non-Newtonian fluids, whereas Brownian motion and ther-mophoresis effects are incorporated in the nanofluid model. A set of similarity transformation is used to reduce mass, momentum, thermal energy, and nanoparticles concentration equations into nonlinear ordinary differential equations, which are solved numerically by using a fourth-fifth order Runge-Kutta-Fehlberg method. Effects of nanofluid parameters, suction/injection and temperature parameters, and generalized Pr and he numbers on dimensionless functions, skin friction, local Nusselt, and Sherwood numbers are investigated in the presence of magnetic field and are shown graphically. The quantitative comparison of skin friction and heat transfer rates with the published results for special cases is shown in tabular form and is found in good agreement.
机译：在这项研究中，在规定的壁温和均匀的表面纳米粒子浓度下，研究了磁场对拉伸表面上非牛顿纳米流体中传热和传质的综合影响。幂律模型用于非牛顿流体，而布朗运动和热导效应被纳入纳米流体模型。使用一组相似变换将质量，动量，热能和纳米颗粒浓度方程式简化为非线性常微分方程式，使用四阶五阶Runge-Kutta-Fehlberg方法对其进行数值求解。在存在磁场的情况下，研究了纳米流体参数，吸气/进样和温度参数以及广义Pr和he数对无量纲函数，皮肤摩擦，局部Nusselt和Sherwood数的影响，并以图形方式显示。表格中显示了特殊情况下皮肤摩擦和传热速率与已发表结果的定量比较，发现吻合良好。

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