In this article, we consider the magnetohydrodynamic (MHD) nanofluid flow over a rotating stretchable disk through porous medium. For porous medium, Darcy’s relation is used. It also encompassed the impact of nanoparticles shape on MHD nanofluid flow and heat transfer. The effect of thermal radiation and Joule heating is also being considered.,Three categories of nanoparticles are taken into deliberation, i.e. copper, silver and titanium oxide. The nanofluid is made of pure water and various types of sphere- and lamina-shaped nanoparticles. By using appropriate similarity transformation, the governing partial differential equations are transformed to ordinary one. The coupled ordinary differential equations system is tackled numerically by bvp4c method.,The impact of various pertinent parameters, i.e. solid volume fraction, Hartman number, thermal radiations parameter, Reynolds number, Eckert number, porosity parameter and ratio parameter, on flow and Nusselt number with a fixed value of Prandtl number at 6.2 is discussed in details. The obtained results are presented in the concluding section. The lamina shape of nanoparticles in silver-water performed an excellent role on temperature distribution. The heat transfer rate of lamina shape in copper-water was found to be greater in the system of flow regime.,The authors have discussed the shape effect of nanoparticles on MHD nanofluid flow over a rotating stretchable disk through porous medium using three categories of nanoparticles, such as copper, silver and titanium oxide. To the best of the authors’ knowledge, this is the first study on mass and heat transfer nanofluid flow and no such study is yet published in literature. A detailed mathematical analysis has also to be carried out to prove the regularity of model. The authors believe that the numerical results are original and have not been copied from any other sources.

中文翻译：

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研究纳米颗粒形状对 MHD 纳米流体流动和通过多孔介质在旋转拉伸盘上的热传递的影响

在本文中，我们考虑了磁流体动力学 (MHD) 纳米流体通过多孔介质在旋转可拉伸圆盘上流动。对于多孔介质，使用达西关系。它还包括纳米颗粒形状对 MHD 纳米流体流动和传热的影响。还考虑了热辐射和焦耳热的影响。考虑了三类纳米粒子，即铜、银和氧化钛。纳米流体由纯水和各种类型的球状和层状纳米粒子制成。通过使用适当的相似变换，控制偏微分方程被转化为普通偏微分方程。耦合常微分方程系统通过bvp4c方法进行数值处理，各种相关参数的影响，即固体体积分数，哈特曼数，详细讨论了热辐射参数、雷诺数、埃克特数、孔隙度参数和比率参数、流量和努塞尔数，其中普朗特数固定值为 6.2。获得的结果在结论部分给出。银水中纳米颗粒的层状形状对温度分布有极好的作用。发现在流态系统中，层状形状在铜 - 水中的传热速率更大。 作者使用三类纳米粒子讨论了纳米粒子对 MHD 纳米流体在旋转可拉伸圆盘上通过多孔介质流动的形状影响，如铜、银和氧化钛。据作者所知，这是第一项关于传质和传热纳米流体流动的研究，尚未在文献中发表此类研究。为了证明模型的规律性，还需要进行详细的数学分析。作者认为数值结果是原创的，没有从任何其他来源复制。