Run up flow of an incompressible micropolar fluid between parallel plates - A state space approach

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Abstract

In this paper, we study the run up flow of an incompressible micropolar fluid between two horizontal infinitely long parallel plates. Initially a flow of the fluid is induced by a constant pressure gradient until steady state is reached. After the steady state is reached, the pressure gradient is suddenly withdrawn while the two plates are impulsively started with different velocities in their own plane. Using the Laplace transform technique and adopting the state space approach, we obtain the velocity and microrotation components in Laplace transform domain. A standard numerical inversion procedure is used to find the velocity and microrotation in space-time domain for various values of time, distance, material parameters and pressure gradient. The variation of velocity and microrotation components is studied and the results are illustrated through graphs. It is observed that the micropolarity parameter has a decreasing effect on velocity component. It is also found that as the gyration parameter increases there is a decrease in microrotation component and an increase in velocity component. © 2010 Elsevier Inc.

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Devakar, M., & Iyengar, T. K. V. (2011). Run up flow of an incompressible micropolar fluid between parallel plates - A state space approach. Applied Mathematical Modelling, 35(4), 1751–1764. https://doi.org/10.1016/j.apm.2010.10.007

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