On a Numerical Investigation of MHD Flow of a Hybrid Nanofluid with Rotation and Thermal Buoyancy Force

A magnetohydrodynamic flow of aluminum oxide, and copper nanoparticles in water based hybrid nanofluid with thermal radiation and rotation is investigated. The numerical solution of the model describing the flow is achieved through the implementation of the improved an overlapping spectral simple iteration method (O-SSIM). The accuracy is enhanced by the overlapping grid, which reduces the density of the coefficient matrix. The objective is to assess the efficiency of the O-SSIM on a system of nonlinear ordinary differential equations that describe the hybrid nanofluid flow. The O-SSIM algorithm is implemented in MATLAB and tested for its convergence and accuracy. The accuracy of the O-SSIM are proved using the residual error analysis. The results are compared with previously published findings that were obtained using the overlapping spectral local linearization method. The nonlinear differential equations are linearised using the simple iteration method. The study aims to examine how various fluid parameters influence the characteristics of the hybrid nanofluid. The results presented the influence the stretching ratio, rotation, magnetic, and heat generation and absorption parameters on the temperature profile. The skin friction coefficients and Nusselt number were calculated and analyzed. It is found among other results, that the heat transfer rate of the hybrid nanofluid increased with both the volume fraction of copper nanoparticles and heat generation parameters.