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Radiative swirl motion of hydromagnetic Casson nanofluid flow over rotary cylinder using Joule dissipation impact
Physica Scripta ( IF 2.6 ) Pub Date : 2021-02-04 , DOI: 10.1088/1402-4896/abdf83
Arshad Khan 1 , Anwar Saeed 2 , Taza Gul 3 , Safyan Mukhtar 4 , Ishtiaq Ali 5 , Muhammad Jawad 2
Affiliation  

In this article, the heat transfer is examined in spinning flow of the Casson nanofluid. The spinning motion is produced with the help of stretching and rotating cylinder. In current work two cases, both for constant and variant axial temperature over the exterior of the spinning cylinder are studied. For controlling the rate of heat transfer, some heat effects such as heat generation/absorption, Joule heating and thermal radiations have been considered for flow system. For investigation the influence of thermophoretic force and Brownian motion exerted by Casson nanofluid, the famous Buongiorno model has been employed. The modeled equations have converted to dimensionless form using a set of similar variables. To improve the solution convergence of flow equations a compressed variable is also employed. As the main outcome of this work, it has observed that, with growing values of Reynolds number and magnetic parameter the flow characteristics reduce in all directions. A growth in temperature profile is also observed for constant wall temperature (CWT), while a reduction is noticed in temperature profile for prescribed surface temperature (PST). Moreover, the concentration of fluid reduces with growing values of Prandtl and Lewis numbers.



中文翻译:

焦耳耗散冲击作用下水磁Casson纳米流体在旋转圆柱体上的辐射旋流运动

在本文中,在卡森纳米流体的纺丝流中研究了热传递。旋转运动是借助拉伸和旋转圆柱体产生的。在当前的工作中,研究了两种情况,即旋转筒外部的轴向温度恒定和变化。为了控制传热速率,流动系统已考虑了一些热效应,例如热量的产生/吸收,焦耳热和热辐射。为了研究Casson纳米流体对热泳力和布朗运动的影响,采用了著名的Buongiorno模型。使用一组相似的变量,已建模的方程式已转换为无量纲形式。为了改善流动方程的解收敛性,还使用压缩变量。作为这项工作的主要成果,已经观察到,随着雷诺数和磁参数值的增大,流动特性在所有方向上都减小。对于恒定的壁温(CWT),也观察到温度曲线的增长,而对于规定的表面温度(PST),温度曲线则下降。此外,随着Prandtl和Lewis值的增加,流体的浓度降低。

更新日期:2021-02-04
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