MHD Natural Convective Flow of a Rotating Walters’-B Fluid

What is it about?

In this paper, unsteady MHD boundary layer flow of a rotating Walters’-B fluid over an infinite oscillating vertical porous plate embedded in a uniform porous medium with fluctuating wall temperature and concentration taking Hall and ion-slip effects into consideration is discussed. Solution for velocity field in the case when natural frequency due to rotation and Hall current is equals to the frequency of oscillations i.e. in the case of resonance is also obtained. In order to note the influences of various system parameters and to discuss the important flow characteristics, the numerical results for fluid velocity in the non-resonance case, temperature and species concentration are computed and depicted graphically versus boundary layer parameter whereas skin friction, Nusselt number and Sherwood number at the plate are computed and presented in tabular form.

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Why is it important?

An interesting observation recorded that there arises reverse flow in the primary flow direction due to high rotation. When natural frequency is greater than the frequency of oscillations the fluid velocity in the primary flow direction is maximum at the plate whereas in case when natural frequency is smaller than the frequency of oscillations, it is maximum in the vicinity of the plate.

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