The purpose of this paper is to theoretically investigate the unsteady separated stagnation-point flow and heat transfer past an impermeable stretching/shrinking sheet in a copper (Cu)-water nanofluid using the mathematical nanofluid model proposed by Tiwari and Das.
A similarity transformation is used to reduce the governing partial differential equations to a set of nonlinear ordinary (similarity) differential equations which are then solved numerically using the function bvp4c from Matlab for different values of the governing parameters.
It is found that the solution is unique for stretching case; however, multiple (dual) solutions exist for the shrinking case.
The authors believe that all numerical results are new and original, and have not been published elsewhere.
The work on this paper was supported from the grant PN-III-P4-ID-PCE-2016-0036, UEFISCDI, Romania. The authors thank the very competent reviewers for their constructive comments which clearly enhanced the quality of the manuscript.
Roşca, N.C., Roşca, A.V. and Pop, I. (2019), "Unsteady separated stagnation-point flow and heat transfer past a stretching/shrinking sheet in a copper-water nanofluid", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 29 No. 8, pp. 2588-2605. https://doi.org/10.1108/HFF-09-2018-0527
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