Improving the thermal performance of (ZnO-Ni /H₂O) hybrid nanofluid flow over a rotating system: the applications of Darcy Forchheimer theory

ABSTRACT

The present study focused on the effect of Lorentz force and Hall current on hybrid nanomaterial flow over a transient stretching and rotating disk. Darcy-Forchheimer law was utilized. A porous stretching disk accounted for the slip effect. Energy expression is modeled through heat dissipation, radiation, and exponential heat source. Hybrid nanomaterial is used for the current model, which is the combination of $\text{ZnO}$ and $\text{Ni}$ with water as a base liquid. The modeled PDE system is converted to ODEs employing suitable variables. The obtained ODEs are approximated by the ND-Solve technique. Our analysis conveys that the rate of heat transfer is higher in nanomaterial compared with hybrid nanomaterial. Hall current enhances the fluid motion, whereas the inertia factor shows the opposite behavior. Additionally, it is found that the Lamina shape of nano-particles has a higher rate of heat transfer than other shapes.

KEYWORDS:

• (ZnO-Ni) nanoparticles
• hybrid nanofluid
• Hall current effect
• Coriolis forces
• Darcy-Forchheimer
• slip effect

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by King Khalid University [grant number RGP. 2/160/43].