Spectral simulation to investigate the effects of nanoparticle diameter and nanolayer on the ferrofluid flow over a slippery rotating disk in the presence of low oscillating magnetic field

This article explores the impacts of the solid-liquid interfacial layer and nanoparticle diameter on the unsteady ferrous-water nanoliquid flow over a spinning disk. The existence of velocity slip is presumed on the disk. Additionally, the low oscillating magnetic field effect is included to extract the hydrothermal consequences of the problem. Shliomis theory has been presented to verbalize the foremost equations of the mentioned flow problem. The similarity transformation renders the dimensionless equations. Spectral quasilinearization technique along with the residual error profile is presented to resolve the converted equations. An adequate number of pictures and tables are portrayed to improve the parametric study of the problem. Several streamlines, isotherms, contour plots, and three-dimensional figures are presented to disclose the hydrothermal integrity of the nanofluidic transport. Effective magnetization parameter produces 4.67% skin frictional increment. Heat transport declines for nanoparticle diameter but is enhanced for nanolayer conductivity ratio. The presence of an oscillating magnetic field always promotes heat transference as compared with the absence of the oscillating field. The nanolayer conductivity ratio conveys the highest 8.69% heat transport rate, whereas the magnetization factor provides the lowest, 1.79%. It has novel applications in magnetic drug targeting, hard disk scaling, magnetic resonance imaging, spin coating, lubrication, and so forth.

Automated summary

This article investigates the effects of the solid-liquid interfacial layer and nanoparticle diameter on the unsteady ferrous-water nanoliquid flow over a spinning disk, along with the presence of velocity slip and low oscillating magnetic field. The study utilizes Shliomis theory to explain the primary equations, presenting dimensionless equations through similarity transformations and solving them with spectral quasilinearization technique. The results reveal the impact of magnetization parameter and nanolayer conductivity ratio on heat transport.