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

• Published in: Applied mathematics and mechanics Vol. 41; no. 8; pp. 1125 - 1138
• Main Authors: Khan, M., Ahmed, J., Sultana, F., Sarfraz, M.
• Format: Journal Article
• Language: English
• Published: Shanghai Shanghai University 01.08.2020; Springer Nature B.V
• Edition: English ed.
• Subjects: Aluminum oxide; Applications of Mathematics; Axisymmetric flow; Classical Mechanics; Computational fluid dynamics; Fluid flow; Fluid- and Aerodynamics; Mathematical Modeling and Industrial Mathematics; Mathematics; Mathematics and Statistics; Nanofluids; Nanoparticles; Partial Differential Equations; Shape effects; Shape factor; Stagnation point; Strain rate; Temperature distribution; Temperature profiles; magnetic field; 34B15; cylindrical disk; 76D10; non-linear thermal radiation; viscous dissipation; stagnation point flow; hybrid nanofluid; O361
• ISSN: 0253-4827; 1573-2754
• DOI: 10.1007/s10483-020-2638-6

The heat transfer of Homann flow in the stagnation region of the Al 2 O 3 -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.