Lorentz force and solar energy case study on CNTs and pollytetrafluoroethylene (PTFE) paraffin oil-based hybrid nanofluid flow through a porous divergent/convergent channel

Abstract

The concept of thermal transfer has fundamental implications in many areas, from the most basic physiological processes to the most complex technological systems. Kerosene oil, often known as paraffin oil, is frequently used as a fuel for jet lighting, engines and heating processes in many technologies. The rate of heat transmission is the fundamental requirement of all phenomena. But this cannot be achieved from base fluid like paraffin oil due to its less efficiency to rise the rate of heat transmission and save energy lost due to high temperatures. Therefore, current analysis is to explore effect of the Lorentz force, viscous dissipation and solar radiation on kerosene oil with the combination of single-walled carbon nanotubes (SWCNTs) and Polytetrafluoroethylene (PTFE) in a porous convergent/divergent and stretching/shrinking channel. SWCNTs and PTFE are added to kerosene oil to produce the hybrid nanofluid. The designed problem is modeled in terms of partial differential equations PDEs. The nonlinear PDEs system is then reduced into ODEs using the transformations framework. The ND Solve technique is applied to numerically simulate the reduced boundary value problem, and the results are sketched and discussed. Obtained results demonstrate that velocity profile increase for the divergent channel and a fall in the convergence channel against higher value of porosity parameter and as well as Hartmann number.

Keywords

• Solar energy radiation
• Darcy-forchheimer law
• Lorentz force
• Energy dissipation
• Single walled carbon nanotubes (SWCNTs) and polytetrafluoroethylene (PTFE) nanoparticles