Unsteady Stagnation‐Point Flow of a Viscoelastic Fluid in the Presence of a Magnetic Field

Abstract

The unsteady two‐dimensional stagnation point flow of the Walters B′ fluid impinging on an infinite plate in the presence of a transverse magnetic field is examined and solutions are obtained. It is assumed that the infinite plate at y = 0 is making harmonic oscillations in its own plane. A finite difference technique is employed and solutions for small and large frequencies of the oscillations are obtained for various values of the Hartmann′s number and the Weissenberg number.