TY  - JOUR
AB  - Purpose The purpose of this paper is to theoretically study the problem of the unsteady boundary layer flow past a permeable curved stretching/shrinking surface in the presence of a uniform magnetic field. The governing nonlinear partial differential equations are converted into ordinary differential equations by similarity transformation, which are then solved numerically.Design/methodology/approach The transformed system of ordinary differential equations was solved using a fourth-order Runge-Kutta integration scheme. Results for the reduced skin friction coefficient and velocity profiles are presented through graphs and tables for several sets of values of the governing parameters. The effects of these parameters on the flow characteristics are thoroughly examined.Findings Results show that for the both cases of stretching and shrinking surfaces, multiple solutions exist for a certain range of the curvature, mass suction, unsteadiness, stretching/shrinking parameters and magnetic field parameter.Originality/value The paper describes how multiple (dual) solutions for the flow reversals are obtained. It is shown that the solutions exist up to a critical value of the shrinking parameter, beyond which the boundary layer separates from the surface and the solution based upon the boundary layer approximations is not possible.
VL  - 26
IS  - 8
SN  - 0961-5539
DO  - 10.1108/HFF-07-2015-0301
UR  - https://doi.org/10.1108/HFF-07-2015-0301
AU  - Pop Ioan
AU  - Mohamed Isa Siti Suzilliana Putri
AU  - Arifin Norihan M.
AU  - Nazar Roslinda
AU  - Bachok Norfifah
AU  - Ali Fadzilah M.
PY  - 2016
Y1  - 2016/01/01
TI  - Unsteady viscous MHD flow over a permeable curved stretching/shrinking sheet
T2  - International Journal of Numerical Methods for Heat & Fluid Flow
PB  - Emerald Group Publishing Limited
SP  - 2370
EP  - 2392
Y2  - 2024/04/23
ER  -