Department of Mathematics, Government College University Faisalabad, Faisalabad, 38000, Pakistan.
Department of Mathematics, University of Gujrat, Gujrat, 50700, Pakistan.
Sci Rep. 2023 Mar 22;13(1):4679. doi: 10.1038/s41598-023-31734-1.
In present times modern electronic devices often come across thermal difficulties as an outcome of excessive heat production or reduction in surface area for heat exclusion. The current study is aimed to inspect the role of iron (III) oxide in heat transfer enhancement over the rotating disk in an axisymmetric flow. Water is utilized as base fluid conveying nano-particle over the revolving axisymmetric flow mechanism. Additionally, the computational fluid dynamics (CFD) approach is taken into consideration to design and compute the present problem. For our convenience, two-dimensional axisymmetric flow configurations are considered to illustrate the different flow profiles. For radial, axial, and tangential velocity profiles, the magnitude of the velocity, streamlines, and surface graphs are evaluated with the similarity solution in the computational fluid dynamics module. The solution of dimensionless equations and the outcomes of direct simulations in the CFD module show a comparable solution of the velocity profile. It is observed that with an increment in nanoparticle volumetric concentration the radial velocity decline where a tangential motion of flow enhances. Streamlines stretch around the circular surface with the passage of time. The high magnetization force [Formula: see text] resist the free motion of the nanofluid around the rotating disk. Such research has never been done, to the best of the researchers' knowledge. The outcomes of this numerical analysis could be used for the design, control, and optimization of numerous thermal engineering systems, as described above, due to the intricate physics of nanofluid under the influences of magnetic field and the inclusion of complex geometry. Ferrofluids are metallic nanoparticle colloidal solutions. These kinds of fluids do not exist in nature. Depending on their purpose, ferrofluids are produced using a variety of processes. One of the most essential characteristics of ferrofluids is that they operate in a zero-gravity environment. Ferrofluids have a wide range of uses in engineering and medicine. Ferrofluids have several uses, including heat control loudspeakers and frictionless sealing. In the sphere of medicine, however, ferrofluid is employed in the treatment of cancer via magneto hyperthermia.
当今,现代电子设备经常遇到因过度发热或散热表面积减小而导致的热难题。本研究旨在研究氧化铁在轴对称旋转盘中的传热增强作用。水作为基液,在旋转轴对称流机制中输送纳米颗粒。此外,还采用计算流体动力学(CFD)方法来设计和计算本问题。为方便起见,考虑二维轴对称流配置来说明不同的流动轮廓。对于径向、轴向和切向速度轮廓,通过计算流体动力学模块中的相似性解来评估速度、流线和表面图的大小。无量纲方程的解和 CFD 模块中的直接模拟结果表明,速度轮廓具有相似的解。可以观察到,随着纳米颗粒体积浓度的增加,径向速度下降,而流动的切向运动增强。流线随着时间的推移围绕圆形表面伸展。高磁化力 [Formula: see text] 抵抗纳米流体在旋转盘周围的自由运动。据研究人员所知,这种研究从未进行过。由于磁场下纳米流体的复杂物理特性以及复杂几何形状的包含,这种数值分析的结果可用于设计、控制和优化许多热工系统,如上文所述。铁磁流体是金属纳米颗粒胶体溶液。这种流体在自然界中并不存在。根据其用途,铁磁流体采用多种工艺生产。铁磁流体最重要的特性之一是它们在零重力环境下运行。铁磁流体在工程和医学中有广泛的应用。铁磁流体具有多种用途,包括热控制扬声器和无摩擦密封。然而,在医学领域,铁磁流体通过磁热疗用于癌症治疗。