The steady laminar two-dimensional magnetohydrodynamic (MHD) stagnation-point flow of an incompressible viscous fluid impinging normal to a nonlinearly stretching/shrinking flat sheet in the presence of a nonuniform magnetic field applied in the positive normal to the flat sheet is considered. The governing system of partial differential equations is first transformed into ordinary differential equations and solved numerically using an implicit finite-difference scheme known as the Keller-box method. The effects of the magnetic parameter , the velocity exponent parameter , and the stretching/shrinking parameter on the flow field are discussed. It is found that the magnitude of the skin friction coefficient increases with both the magnetic parameter and the velocity exponent parameter , when the stretching velocity differs from the free-stream velocity (), and is zero when . For a fixed value of the magnetic parameter , a unique or dual solutions are found for the shrinking sheet, depending on the values of the parameters and .
MHD Stagnation-Point Flow over a Nonlinearly Stretching/Shrinking Sheet
Journal of Aerospace Engineering ; 26 , 4 ; 829-834
2011-12-14
62013-01-01 pages
Article (Journal)
Electronic Resource
English
MHD Stagnation-Point Flow over a Nonlinearly Stretching/Shrinking Sheet
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