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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer in a liquid film over an unsteady stretching sheet
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Heat transfer in a liquid film over an unsteady stretching sheet

机译：液膜在不稳定拉伸片上的热传递

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摘要

The effects of viscous dissipation, non-uniform heat source/sink, magnetic field, and thermal radiation on heat transfer characteristics of a thin liquid film flow over an unsteady stretching sheet are analyzed. A similarity transformation is used to reduce the governing time dependent momentum and energy equations into non-linear ordinary differential equations. The resulting differential equations with the appropriate boundary conditions are solved by an efficient shooting algorithm with fourth order Runge-Kutta technique. The effects of the physical parameters on the flow and heat transfer characteristics are presented through graphs and analyzed. The numerical results for the wall temperature gradient (Nusselt number) are calculated and presented through tables. Also, the effects of the physical parameters on the heat transfer characteristics are brought out: suggestions are made for efficient cooling. Furthermore, the limiting cases are obtained and are found to be in good agreement with the previously published results.
机译：分析了粘性耗散，不均匀的热源/散热片，磁场和热辐射对在不稳定拉伸片上流动的液体薄膜的传热特性的影响。使用相似变换将与控制时间有关的动量和能量方程式简化为非线性常微分方程式。通过使用四阶Runge-Kutta技术的有效射击算法，可以求解具有适当边界条件的所得微分方程。通过图表显示并分析了物理参数对流动和传热特性的影响。计算壁温梯度（努塞尔数）的数值结果，并通过表格显示。此外，还提出了物理参数对传热特性的影响：提出了有效冷却的建议。此外，获得了极限情况，并发现其与先前公布的结果非常吻合。

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