Asif Ali Shah Syed, Kanwal Shumaila, Idrees Muhammad, Mahmood Asif, Mahmood Irfan, Akgul Ali, Bariq Abdul
Department of Mathematics and Statistics, The University of Lahore, Lahore, Pakistan.
Chemical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia.
Sci Rep. 2023 Sep 19;13(1):15507. doi: 10.1038/s41598-023-42480-9.
Nanofluids are implementable in a variety of applications, such as heat exchangers, the healthcare sector, the cooling of various devices, hybrid-powered machines, microelectronics, power plants, chemical processes, astronomical technology, cancer treatment, etc. Nanofluids also have enhanced heat transmission and thermal efficiency. The heat radiation of nanoparticles and the natural-convective flow of electrically conducting nanofluids over the rotating disk using Darcy Forchheimer's porous media, thermal radiation is investigated in this paper. The nanoparticles titanium dioxide and single-walled carbon nanotubes are taken into account with base fluid water. The main goal of this investigation is to enhance heat transfer in nanofluids. The mathematical solution for the model has been obtained through the utilization of cylindrical coordinates. The flow model, which forms the basis of the investigation, is constructed around partial differential equations (PDEs). To address the inherent nonlinearity of these PDEs, physical similarities are employed to transform them into ordinary differential equations (ODEs). Subsequently, the fourth-order Runge-Kutta technique is employed via Matlab to solve these ODEs. The graphical examination of the velocities and temperature with various parameters is an exquisite display of scientific artistry. The magnetic field component is anticipated to exhibit an inverse correlation with velocities, while the temperature profile is expected to surge with the rise of the nonlinear mixed convection parameter. Additionally, the skin friction and Nusselt number are meticulously computed and presented in a tabular format, adding a touch of elegance to the already breathtaking analysis. By boosting the radiation parameter, the Nusselt value declined. Moreover, it is observed that the nanofluids having a laminar nanoparticle shape have a greater heat transfer rate.
纳米流体可应用于多种领域，如热交换器、医疗保健行业、各种设备的冷却、混合动力机器、微电子、发电厂、化学过程、天文技术、癌症治疗等。纳米流体还具有增强的热传递和热效率。本文研究了纳米颗粒的热辐射以及使用达西 - 福希海默多孔介质的导电纳米流体在旋转圆盘上的自然对流流动中的热辐射。考虑了纳米颗粒二氧化钛和单壁碳纳米管与基础流体水。本研究的主要目标是增强纳米流体中的热传递。通过使用柱坐标获得了该模型的数学解。围绕偏微分方程（PDEs）构建了作为研究基础的流动模型。为了解决这些PDEs固有的非线性，采用物理相似性将它们转化为常微分方程（ODEs）。随后，通过Matlab使用四阶龙格 - 库塔技术来求解这些ODEs。对具有各种参数的速度和温度进行图形检查是科学技艺的精美展示。预计磁场分量与速度呈反比关系，而温度分布预计会随着非线性混合对流参数的增加而激增。此外，还精心计算了表面摩擦力和努塞尔数，并以表格形式呈现，为已经令人惊叹的分析增添了一丝优雅。通过提高辐射参数，努塞尔值下降。此外，观察到具有层状纳米颗粒形状的纳米流体具有更高的热传递速率。
