Aspects of double slip on multiphase inclined channel flow of Casson and Cu-nanofluid

Abstract

The key aspect of this study is to inspect the entropy generation (EG) of heat and momentum transport within two immiscible Casson and nanofluid (NF) with mass diffusion of copper nanomaterials in an inclined channel (IC) with thermal and velocity slips. The IC is divided into two regions. Region-I contains the Casson fluid (CF) whereas Region II is occupied with copper-water NF. Moreover, the effects of Lorentz force are also taken in region II having copper-water NF. The mathematical model is solved by employing the perturbation method. The behavior of different aspects, i.e., mass diffusion of copper nanomaterials, Lorentz force, velocity and thermal slips on EG, and transport of mass and heat are presented in graphs and tabular forms. Furthermore, the numerical outcomes of friction at the walls and the rate of heat transport are presented in tabular form. Our results show that the EG and the rate of EG decline when the dispersion of nanomaterials is increased. The velocity and temperature decline when Lorentz force is increased in Region II. Furthermore, temperature augments with the rise in CF parameter and thermal slip parameters whereas velocity also increases with the rise in velocity slip parameters. So, the thermal performance can be enhanced in an IC by using blood fluid in one phase and thermal slips at the walls.

Keywords:

• Entropy generation
• inclined channel
• multiphase flow
• nanofluid
• non-Newtonian fluid
• thermal and velocity slip

Acknowledgement

Thanks to anonymous reviewers for their useful suggestions.

Disclosure statement

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

Future work

The present study can be extended from nanofluid to hybrid and tri-hybrid nanofluids as well as different non-Newtonian fluids. The convective boundary conditions can also be considered.