Hydrodynamic and heat transfer analysis of dissimilar shaped nanoparticles-based hybrid nanofluids in a rotating frame with convective boundary condition

Abstract

Solar thermal systems have low efficiency due to the working fluid's weak thermophysical characteristics. Thermo-physical characteristics of base fluid depend on particle concentration, diameter, and shapes. To assess a nanofluid's thermal performance in a solar collector, it is important to first understand the thermophysical changes that occur when nanoparticles are introduced to the base fluid. The aim of this study is, therefore, to analyze the hydrodynamic and heat characteristics of two different water-based hybrid nanofluids (used as a solar energy absorber) with varied particle shapes in a porous medium. As the heat transfer surface is exposed to the surrounding environment, the convective boundary condition is employed. Additionally, the flow of nanoliquid between two plates (in parallel) is observed influenced by velocity slip, non-uniform heat source-sink, linear thermal radiation. To make two targeted hybrid nanofluids, graphene is added as a cylindrical particle to water to make a nanofluid, and then silver is added as a platelet particle to the graphene/water nanofluid. For the second hybrid nanofluid, CuO spherical shape particles are introduced to the graphene/water nanofluid. The entropy of the system is also assessed. The Tiwari-Das nanofluid model is used. The translated mathematical formulations are then solved numerically. The physical and graphical behavior of significant parameters is studied.

Numerical solution of an electrically conducting spinning flow of hybrid nanofluid comprised of silver and gold nanoparticles across two parallel surfaces

“…The MHD Casson nanoliquid flow was discussed by Alqahtani et al 13 over an elongating surface. A permeable medium was employed by Ramzan et al 14 to evaluate the hydrodynamic and thermal radiation features of the rotating flow of two distinct water-based hybrid nanofluids with the variation of particle sizes. Some related studies may be found in Ref.…”

Volumetric thermo-convective casson fluid flow over a nonlinear inclined extended surface

“…The exothermic chemical reaction and activation of energy has been discussed by Ramzan et al 37 and found that in an exothermic chemical reaction, the energy of the reactants higher than the end products. Ramzan et al 38 discussed hydrodynamics and heat transfer with convective boundary conditions. They realized that solar thermalsystem has low efficiency due to working fluid’s weak thermophysical properties.…”

Hybrid Nanofluid Flow Induced by an Oscillating Disk Considering Surface Catalyzed Reaction and Nanoparticles Shape Factor

“…An enhancement in thermal heat transfer of 33.67% was observed for the ternary hybrid nanofluid flow when compared with the unitary nanofluid flow. Recent studies featuring hybrid nanofluid flow in various scenarios may be observed in [ 18 , 19 , 20 , 21 , 22 ].…”