On the Stabilization of a Viscoelastic Jeffreys Fluid Layer Heated from Below

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Perez Reyes I.; Ortiz Perez A. S.

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Journal Paper

Paper Information

Journal: JOURNAL OF APPLIED FLUID MECHANICS (JAFM) Year:2021 | Volume:14 | Issue:3 Page(s): 769-778

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Information Journal Paper

Title

On the Stabilization of a Viscoelastic Jeffreys Fluid Layer Heated from Below

Author(s)

Perez Reyes I. | Ortiz Perez A. S. | Issue Writer Certificate

Keywords

Feedback control

Hydrodynamic stability

Rayleigh convection

Abstract

Feedback control is applied to the problem of a viscoelastic Jeffreys fluid layer heated from below to investigate conditions for delay of the onset of convection. Interesting results for fixed Prandtl number 1 and 10 were found showing that for some conditions proportional control may not work as expected. Also, some limits of the Feedback control in terms of the parameters of the system through an analytical approach by mean of the Galerkin method are discussed. In order to complete the study a numerical analysis was also performed to map the space of physical parameters. The results of this work are discussed and compared with results of previous authors while attention to small control adjustments is paid.

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