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首页> 外文期刊>Journal of Heat Transfer >Heat Transfer Analysis for Three-Dimensional Stagnation-Point Flow of Water-Based Nanofluid Over an Exponentially Stretching Surface
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Heat Transfer Analysis for Three-Dimensional Stagnation-Point Flow of Water-Based Nanofluid Over an Exponentially Stretching Surface

机译：水基纳米流体在指数拉伸表面上三维滞流的传热分析

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摘要

The basic theme of this investigation is to analyze heat and mass transport for three-dimensional (3D) stagnation-point flow of nanofluid caused by an exponentially stretched surface when water is treated as base fluid. In this study, we invoked the boundary layer phenomena and suitable similarity transformation of exponential character; as a result, our 3D nonlinear equations of momentum and energy are transmuted into nonlinear and nonhomogeneous differential equations involving ordinary derivatives. Final equations are then puzzled out by applying homotopy analysis technique. Interesting outcomes of aggressing parameters involved in this study, and effecting profiles of temperature field and velocity are explained in detail. Graphical results of involved parameters appearing in considered nanofluid are presented separately. Different aspects of skin friction coefficient as well as Nusselt number are calculated. It is worth mentioning that skin friction (as we go) along x and y-direction is maximal for Cu-water nanofluid and minimal for AL 2 O 3 - water nanofluid. Also, the resulting quantity of local Nusselt number came out maximum for Cu-water nanofluid whereas minimum for TiO 2 - water nanofluid.
机译：这项研究的基本主题是分析当水被当作基础流体处理时，由指数拉伸表面引起的纳米流体的三维（3D）停滞点流的传热和传质。在这项研究中，我们调用了边界层现象和指数特征的适当相似性转换。结果，我们的动量和能量的3D非线性方程被转换为涉及普通导数的非线性和非齐次微分方程。然后通过应用同伦分析技术将最终方程式弄糊涂。详细解释了本研究涉及的攻击性参数的有趣结果，以及温度场和速度的影响曲线。涉及的参数出现在考虑的纳米流体中的图形结果分开显示。计算皮肤摩擦系数以及努塞尔数的不同方面。值得一提的是，沿x和y方向的皮肤摩擦（沿我们方向）对于Cu-水纳米流体最大，而对于AL 2 O 3-水纳米流体最小。同样，Cu-水纳米流体的局部Nusselt数量的结果最大，而TiO 2-水纳米流体的最小数量。

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