Impact of anisotropic slip on the stagnation-point flow past a stretching/shrinking surface of the Al2O3-Cu/H2O hybrid nanofluid

doi:10.1007/s10483-020-2642-6

Abstract

Abstract: The characteristics of heat transfer in the three-dimensional stagnationpoint flow past a stretching/shrinking surface of the Al₂O₃-Cu/H₂O hybrid nanofluid with anisotropic slip are investigated. The partial differential equations are converted into a system of ordinary differential equations by valid similarity transformations. The simplified mathematical model is solved computationally by the bvp4c approach in the MATLAB operating system. This solving method is capable of generating more than one solutions when suitable initial guesses are proposed. The results are proven to have dual solutions, which consequently lead to the application of a stability analysis that verifies the achievability of the first solution. The findings reveal infinite values of the dual solutions at several measured parameters causing the non-appearance of the turning points and the critical values. The skin friction increases with the addition of nanoparticles, while the escalation of the anisotropic slip effect causes a reduction in the heat transfer rate.

Key words: anisotropic slip, three-dimensional flow, stagnation-point, hybrid nanofluid

2010 MSC Number:

76D10
34B15

N. A. ZAINAL, R. NAZAR, K. NAGANTHRAN, I. POP. Impact of anisotropic slip on the stagnation-point flow past a stretching/shrinking surface of the Al₂O₃-Cu/H₂O hybrid nanofluid. Applied Mathematics and Mechanics (English Edition), 2020, 41(9): 1401-1416.

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Impact of anisotropic slip on the stagnation-point flow past a stretching/shrinking surface of the Al₂O₃-Cu/H₂O hybrid nanofluid

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