Thermal transport analysis for entropy generated flow of hybrid nanomaterial: modified Cattaneo–Christov heat and Darcy–Forchheimer

Purpose The heat transport phenomenon in which energy transfers due to temperature differences is an important topic of interest for scientists in recent times. It is because of its wide range of applications in numerous domains such as electronics, heat dispersion, thermoregulation, cooling mechanism, the managing temperature in automotive mobile engines, climate engineering, magnetoresistance devices, etc. On account of such considerations, the magnetohydrodynamic (MHD) entropy rate for nanomaterial ( CoFe 2 O 4 / C 2 H 6 O 2 ) and hybrid nanomaterial ( CoFe 2 O 4 + MoS 4 / C 2 H 6 O 2 ) is analyzed. The Darcy–Forchheimer relation is utilized to describe the impact of a porous medium on a stretched sheet. Two nanoparticles molybdenum ( MoS 4 ) and cobalt ferrite ( CoFe 2 O 4 ) are combined to make hybrid nanomaterial ( CoFe 2 O 4 + MoS 4 / C 2 H 6 O 2 ). Heat flux corresponds to the Cattaneo–Christov model executed through heat transfer analysis. The influence of dissipation and heat absorption/generation on energy expression for nanomaterial ( CoFe 2 O 4 + MoS 4 / C 2 H 6 O 2 ) and hybrid nanomaterial ( CoFe 2 O 4 + MoS 4 / C 2 H 6 O 2 ) is described. Design/methodology/approach Nonlinear partial differential expressions have been exchanged into dimensionless ordinary differential expressions using relevant transformations. Newton’s built-in shooting method is employed to achieve the required results. Findings Concepts of fluid flow, energy transport and entropy optimization are discussed. Computational analysis of local skin friction and Nusselt number against sundry parameters for nanomaterial ( CoFe 2 O 4 / C 2 H 6 O 2 ) and hybrid nanomaterial ( CoFe 2 O 4 + MoS 4 / C 2 H 6 O 2 ) is engrossed. Larger magnetic field parameters decay fluid flow and entropy generation, while an opposite behavior is observed for temperature. Variation in magnetic field variables and volume fractions causes the resistive force to boost up. Intensification in entropy generation can be seen for higher porosity parameters, whereas a reverse trend follows for fluid flow. Heat and local Nusselt numbers rise with an increase in thermal relaxation time parameters. Originality/value No such work is yet published in the literature.