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Unsteady separated stagnation-point flow and heat transfer past a stretching/shrinking sheet in a copper-water nanofluid

Unsteady separated stagnation-point flow and heat transfer past a stretching/shrinking sheet in a... PurposeThe 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.Design/methodology/approachA 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.FindingsIt is found that the solution is unique for stretching case; however, multiple (dual) solutions exist for the shrinking case.Originality/valueThe authors believe that all numerical results are new and original, and have not been published elsewhere. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Numerical Methods for Heat and Fluid Flow Emerald Publishing

Unsteady separated stagnation-point flow and heat transfer past a stretching/shrinking sheet in a copper-water nanofluid

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References (43)

Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0961-5539
DOI
10.1108/HFF-09-2018-0527
Publisher site
See Article on Publisher Site

Abstract

PurposeThe 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.Design/methodology/approachA 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.FindingsIt is found that the solution is unique for stretching case; however, multiple (dual) solutions exist for the shrinking case.Originality/valueThe authors believe that all numerical results are new and original, and have not been published elsewhere.

Journal

International Journal of Numerical Methods for Heat and Fluid FlowEmerald Publishing

Published: Aug 5, 2019

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