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arXiv · 0802.3762

Exact Solutions for a Rotational Flow of Generalized Second Grade Fluids Through a Circular Cylinder

Amir Mahmood·Saifullah·Qammar Rubab
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Abstract

In this note the velocity field and the associated tangential stress corresponding to the rotational flows of a generalized second grade fluid within an infinite circular cylinder are determined by means of the Laplace and Hankel transforms. At time t=0 the fluid is at rest and the motion is produced by the rotation of the cylinder, around its axis, with the angular velocity $Ω.t$. The velocity field and the adequate shear stress are presented under integral and series forms in terms of the generalized G-functions. Furthermore, they are presented as a sum between the Newtonian solutions and the adequate non-Newtonian contributions. The corresponding solutions for the ordinary second grade fluid and Newtonian fluid are obtained as particular cases of our solutions for $β= 1$, respectively $α= 0$ and $β= 1$.

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Amir Mahmood, Saifullah, Qammar Rubab. 2008-02-26. Exact Solutions for a Rotational Flow of Generalized Second Grade Fluids Through a Circular Cylinder. https://arxiv.org/abs/0802.3762

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