Das Sanatan, Ali Akram
Department of Mathematics, University of Gour Banga, Malda 732 103, India.
Heliyon. 2023 Jul 20;9(8):e18376. doi: 10.1016/j.heliyon.2023.e18376. eCollection 2023 Aug.
Nanofluid research has sparked widespread attention due to its immense implementations in various courses, including chemical engineering, microelectronics, solar energy, cooling systems, electronics, power-saving, etc. This research offers modelling and numerical simulation for the magnetized Casson-based spinel ferrite (MnFeO) nanofluid stream owing to a spiralling stretchable sheet placed in a Darcy permeable medium. Diverse impacts like nonlinear heat radiation, viscous and Joule warms, and heat generation/absorption are considered in stimulating heat exchange. Under the imposed physical assumptions, equations governing the flow and heat flow are modelled. The partial derivative model is transferred to the ordinary derivative model by utilising compatible similarity variables. The resulting nonlinear linked ordinary derivative model is tackled computationally by the 4th-order Runge-Kutta integration procedure, accomplishing the best strategy shooting algorithm based on the built-in function of the bvp4c solver in MATLAB. Different attributes of the considered flow phenomenon corresponding to the pertinent model parameters are disclosed effectively via graphs and tables. Some leading outcomes are that amplification is examined in the thermal field and allied zone thickness responding to the radiation parameter and Biot number. With the upgraded rotation parameter, an augmentation is developed in the absolute value of the local skin friction coefficients. Moreover, amplifying the rotation parameter enfeebles the local Nassault number. This modelling could be effective in manufacturing and technological processes like polymeric material extrusion, stretchable/shrinkable packaging, and designing magnetic storage devices.
纳米流体研究因其在包括化学工程、微电子、太阳能、冷却系统、电子学、节能等各种领域的广泛应用而引发了广泛关注。本研究针对置于达西渗透介质中的螺旋可拉伸薄片，对基于磁化卡森的尖晶石铁氧体（MnFeO）纳米流体流进行了建模和数值模拟。在刺激热交换时考虑了多种影响，如非线性热辐射、粘性和焦耳热以及热生成/吸收。在施加的物理假设下，对控制流动和热流的方程进行了建模。通过使用兼容的相似变量，将偏导数模型转换为常导数模型。所得的非线性关联常导数模型通过四阶龙格 - 库塔积分程序进行计算求解，基于MATLAB中bvp4c求解器的内置函数实现了最佳策略射击算法。通过图表有效地揭示了与相关模型参数对应的所考虑流动现象的不同属性。一些主要结果是，在热场和与辐射参数及毕奥数相关的关联区域厚度中检测到放大现象。随着旋转参数的提升，局部表面摩擦系数绝对值增大。此外，增大旋转参数会削弱局部努塞尔数。这种建模在聚合物材料挤出、可拉伸/可收缩包装以及磁存储设备设计等制造和工艺过程中可能是有效的。
