Thermal investigation of Casson hybrid nanoparticles over a porous stretchable plate: a Cattaneo–Christov heat flux model

Abstract

This study analyzes the significance of Cattaneo–Christov heat flux model for the Casson hybrid nanofluid induced by a porous stretching sheet. A uniform magnetic field is also applied normal to the flow direction. Moreover, this investigation incorporates an in-depth analysis of heat transfer phenomena, considering external factors such as viscous dissipation, internal heating, thermal radiation, and convective heating. A system of nonlinear coupled partial differential equations emerges from the mathematical formulation of the problem. To obtain a similarity solution, we introduce similarity variables. The primary differential equations are then numerically solved using the Runge–Kutta-45 method along with a shooting technique. Visual representations are utilized to depict the physical significance of pertinent parameters. The current investigation presents and discusses the impact of various parameters on velocity, temperature, drag forces profiles. The study’s primary findings are as follows: (a) - The skin friction coefficient shows a substantial decrease with an escalation in the Darcy parameter Da \((= 0.0, 0.5, 1.0, 1.5)\); (b) - It is revealed that increasing values of thermal radiation parameter (Rn \(= 0.0, 0.4, 0.8\)) considerably increases the heat transfer rate.