Title

Stability analysis of the dual solutions for stagnation-point flow over a non-linearly stretching surface

Authors

Authors

T. R. Mahapatra; S. K. Nandy; K. Vajravelu;R. A. Van Gorder

Comments

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Abbreviated Journal Title

Meccanica

Keywords

Dual solutions; Stability analysis; Existence and uniqueness; Stagnation-point flow; Nonlinearly stretching surface; BOUNDARY-LAYER-FLOW; HEAT-TRANSFER; VERTICAL SURFACE; POROUS-MEDIUM; VISCOUS-FLOW; SHEET; PLATE; Mechanics

Abstract

We formulate a general steady two-dimensional stagnation-point flow problem corresponding to the fluid flow over a non-linearly stretching sheet. We then study the existence, uniqueness and stability of the unsteady solutions about each steady solution. It is found that there exist two solution branches: one branch is always stable while the other is always unstable. Also, it is observed that with an increase in the nonlinearity of the stretching sheet, the stable solution becomes more stable while the unstable solution becomes more unstable. Further, we show that the stable solution is the physically meaningful solution and such a physical solution always exists. Moreover, the physically meaningful solution is shown to be monotone and unique.

Journal Title

Meccanica

Volume

47

Issue/Number

7

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

1623

Last Page

1632

WOS Identifier

WOS:000307268600006

ISSN

0025-6455

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