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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Flow and heat transfer along a permeable stretching/shrinking curved surface in a hybrid nanofluid
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Flow and heat transfer along a permeable stretching/shrinking curved surface in a hybrid nanofluid

机译：沿杂交纳米流体中的透水拉伸/收缩弯曲表面的流动和传热

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摘要

The problem of the unsteady hybrid nanofluid flow and heat transfer along a stretching/shrinking curved surface with mass suction is studied. By using the similarity transformation, the partial differential equations are transformed into a set of ordinary differential equations. The transformed equations are then solved numerically using the boundary value problem solver (bvp4c) in Matlab software. The effects of several parameters on the skin friction coefficient and the local Nusselt number as well as the velocity and temperature profiles are presented and discussed. It is found that dual solutions exist for a certain range of the stretching/shrinking, suction and curvature parameters. The critical values of these parameters decrease with the increasing of the copper (Cu) nanoparticle volume fractions. A temporal stability analysis is performed to determine the stability of the dual solutions over the long run, and it is reveals that only one of them is stable while the other is unstable.
机译：研究了沿着拉伸/收缩弯曲表面的非定常混合纳米流体流动和热传递的问题。通过使用相似性转换，将部分微分方程变换为一组常微分方程。然后在MATLAB软件中使用边值问题求解器（BVP4C）在数值上进行数字地解决变换的等式。介绍和讨论了若干参数对皮肤摩擦系数和局部营养数以及速度和温度曲线的影响。结果发现，存在于拉伸/收缩，抽吸和曲率参数的一定范围的双解决方案。随着铜（Cu）纳米颗粒体积级分的增加，这些参数的临界值降低。执行时间稳定性分析以确定长期次溶液的稳定性，并且揭示其中一个是稳定的，而另一个是不稳定的。

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