Non-axisymmetric Homann MHD stagnation point flow of Al2O3-Cu/water hybrid nanofluid with shape factor impact

doi:10.1007/s10483-020-2638-6

Abstract

Abstract: The heat transfer of Homann flow in the stagnation region of the Al₂O₃-Cu/water hybrid nanofluid is investigated by adopting the Tiwari-Das model over a cylindrical disk. The effects of the nanoparticle shape, the viscous dissipation, and the nonlinear radiation are considered. The governing equations are obtained by using similarity transformations, and the numerical outcomes for the flow and the temperature field are noted by bvp4c on MATLAB. The numerical solutions of the flow field are compared with the asymptotic behaviors of large shear-to-strain-rate ratio. The effects of variations of parameters involved are inspected for both nanofluid and hybrid nanofluid flows,temperature profiles, local Nusselt numbers, and skin frictions. It is concluded that the velocity and temperature fields in the hybrid nanophase function more rapidly than those in the nanofluid phase.

Key words: cylindrical disk, hybrid nanofluid, magnetic field, non-linear thermal radiation, stagnation point flow, viscous dissipation

2010 MSC Number:

76D10
34B15

M. KHAN, J. AHMED, F. SULTANA, M. SARFRAZ. Non-axisymmetric Homann MHD stagnation point flow of Al₂O₃-Cu/water hybrid nanofluid with shape factor impact. Applied Mathematics and Mechanics (English Edition), 2020, 41(8): 1125-1138.

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Non-axisymmetric Homann MHD stagnation point flow of Al₂O₃-Cu/water hybrid nanofluid with shape factor impact

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