In this article, a thermal analysis is conducted for the axisymmetric flow of viscous nanofluid induced by torsional motion of cylinder. Here the rotation of the cylinder is axially dependent. The impression of heat source/sink with chemical reaction is perceived on the thermal and concentration boundary layer, while the consequence of magnetic field is observed on the fluid flow. In addition, we utilized a two-phased model for nanofluids, namely Buongiorno's model to compute the outcomes of the Soret effect and Brownian diffusion. The non-dimensional ordinary differential equations (ODEs) are obtained by employing the similarity transformation into governing partial differential equations (PDEs). We employed a built-in function, viz. bvp5c, a finite difference method in Matlab^®, to solve the BVPs. The acquired results showed that the axial component of the velocity field occurred as a wall jet phenomenon, which is due to an axial pressure gradient. The axial flow and energy of the system are lessened; however, the peak of the wall jet is amplified for higher values of Reynolds number, but the converse trend is observed in the case of the magnetic parameter. The influence of pertinent parameters is also scrutinized for the wall-shear stress, local Nusselt, and Sherwood number for a selected range of Reynolds number, i.e., $0.01\le \mathrm{Re}\le {10}^4.$ Furthermore, the consequences of the magnetic field have been succinctly observed on the flow, temperature, and concentration profiles. It is concluded that the magnetic field creates a resisting force that causes a reduction in the velocity fields, while temperature profile is enhanced because of the thermal conductivity of nanofluid. The impression of heat source/sink elevated the energy of system, whereas chemical reaction reduced the concentration field.

本文对圆柱扭转运动引起的粘性纳米流体的轴对称流动进行了热分析。这里圆柱体的旋转是轴向相关的。热源/汇与化学反应的印象在热和浓度边界层上被感知，而磁场对流体流动的影响被观察到。此外，我们利用纳米流体的两相模型，即 Buongiorno 模型来计算 Soret 效应和布朗扩散的结果。无量纲常微分方程 (ODE) 是通过将相似变换转化为控制偏微分方程 (PDE) 获得的。我们采用了一个内置函数，即。bvp5c，一种 Matlab ^{® 中}的有限差分方法, 求解 BVP。获得的结果表明，速度场的轴向分量作为壁喷射现象发生，这是由于轴向压力梯度。减少了系统的轴流和能量；然而，对于较高的雷诺数值，壁射流的峰值被放大，但在磁参数的情况下观察到相反的趋势。相关参数的影响也仔细察看的壁剪切应力，局部努塞尔和舍伍德数的雷诺数，所选择的范围，即，$0.01\le \mathrm{关于}\le {10}^4.$此外，磁场对流动、温度和浓度分布的影响已经得到了简明的观察。得出的结论是，磁场产生了一种阻力，导致速度场降低，而温度分布由于纳米流体的导热性而增强。热源/汇的印象提高了系统的能量，而化学反应降低了浓度场。