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首页> 外文期刊>International Journal of Heat and Mass Transfer >Non-orthogonal stagnation point flow of a nano non-Newtonian fluid towards a stretching surface with heat transfer
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Non-orthogonal stagnation point flow of a nano non-Newtonian fluid towards a stretching surface with heat transfer

机译：纳米非牛顿流体通过传热向拉伸表面的非正交停滞点流

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This article investigates the theoretical study of steady stagnation point flow with heat transfer of a second grade nano fluid towards a stretching surface. It is assumed that the fluid impinges on the wall obliquely. The model used for the nano fluid incorporates the effects of Brownian motion and thermophoresis. The governing equations of second grade nano fluid are presented. The governing nonlinear partial differential equations are converted into nonlinear ordinary differential equations by using similar and non similar variables. The resulting ordinary differential equations are successfully solved analytically with the help of homotopy analysis method (HAM). Graphically results are shown for non-dimensional velocities, temperature and nanoparticle concentration. Numerical values of skin friction coefficients, diffusion mass flux and heat flux are computed. It is shown that a boundary layer is formed when the stretching velocity of the surface is less than the inviscid free-stream velocity and velocity at a point increases with the increase in the elasticity of the fluid. Comparison with previously published work is performed and excellent agreement is observed for the limited case of existing literature.
机译：本文研究了稳态二级点流与二级纳米流体向拉伸表面传热的理论研究。假定流体倾斜地撞击在壁上。用于纳米流体的模型结合了布朗运动和热泳的影响。给出了二级纳米流体的控制方程。通过使用相似和不相似的变量，将控制的非线性偏微分方程转换为非线性常微分方程。借助同伦分析方法（HAM），成功地解析了所得的常微分方程。图形结果显示了无量纲速度，温度和纳米粒子浓度。计算皮肤摩擦系数，扩散质量通量和热通量的数值。结果表明，当表面的拉伸速度小于无粘性的自由流速度时，就会形成边界层，并且随着流体弹性的增加，一点处的速度也会增加。与以前发表的作品进行了比较，并且在现有文献的有限情况下，观察到了极好的一致性。

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