Computational Modeling of Hybrid Sisko Nanofluid Flow over a Porous Radially Heated Shrinking/Stretching Disc

The present study reveals the behavior of shear-thickening and shear-thinning fluids in magnetohydrodynamic flow comprising the significant impact of a hybrid nanofluid over a porous radially shrinking/stretching disc. The features of physical properties of water-based Ag/TiO2 hybrid nanofluid are examined. The leading flow problem is formulated initially in the requisite form of PDEs (partial differential equations) and then altered into a system of dimensionless ODEs (ordinary differential equations) by employing suitable variables. The renovated dimensionless ODEs are numerically resolved using the package of boundary value problem of fourth-order (bvp4c) available in the MATLAB software. The non-uniqueness of the results for the various pertaining parameters is discussed. There is a significant enhancement in the rate of heat transfer, approximately 13.2%, when the impact of suction governs about 10% in the boundary layer. Therefore, the heat transport rate and the thermal conductivity are greater for the new type of hybrid nanofluid compared with ordinary fluid. The bifurcation of the solutions takes place in the problem only for the shrinking case. Moreover, the sketches show that the nanoparticle volume fractions and the magnetic field delay the separation of the boundarylayer.

Automated summary

This study investigates the behavior of shear-thickening and shear-thinning fluids in magnetohydrodynamic flow with the impact of a hybrid nanofluid on a porous radially shrinking/stretching disc. The physical properties of a water-based Ag/TiO2 hybrid nanofluid are examined, leading to an enhanced heat transfer rate and thermal conductivity. The numerical analysis reveals non-uniqueness of results for various parameters, with bifurcation occurring only in the shrinking case. The sketches indicate that nanoparticle volume fractions and magnetic fields delay the separation of the boundary layer.