3D FLOW DYNAMICS OF HYBRID NANOFLUID UNDER RADIATION AND ACTIVATION ENERGY
Original scientific paper
DOI:
https://doi.org/10.2298/CICEQ251210006SKeywords:
circular cylinder, three-dimensional flow, combined MgO–TiO2 nanofluid, thermal and mass transferAbstract
This article seeks to study magnetohydrodynamics (MHD) and the porosity of hybrid nanofluid on a three-dimensional stagnation point over the sinusoidal radius of a circular cylinder. The nodal and saddle stagnation points are analysed through graphs for radiation, viscous dissipation, heat transfer, and activation energy employed in mass transfer. With the use of similarity variables, the nonlinear Partial Differential Equation (PDE) was converted to an Ordinary Differential Equation (ODE), which MATLAB's bvp4c solver then resolved. The skin friction and Nusselt number give good agreement with previously published findings pertaining to the saddle and nodal positions at ratios of velocity gradients of -0.5 and 0.5. This study offers a novel analysis of concentration distribution at the boundary layer for a hybrid nanofluid system made up of magnesium oxide (MgO) and titanium dioxide (TiO2). The significance of activation energy is highlighted, as its influence on the concentration distribution in the stagnation point flow of hybrid nanofluid has not been thoroughly investigated in previous studies. Graphical representations are provided for the effects of MHD, porosity, radiation, viscous dissipation, and activation energy on temperature, velocity, and concentration of fluid flow.
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