Instabilities in the asymptotic suction boundary layer over a permeable, compliant wall
The spatial, linear stability of an incompressible parallel boundary layer flow with uniform suction through the wall is studied for the case of rigid and flexible bounding surfaces. It is demonstrated, first, that the effect of the plate’s permeability is crucial in defining the disturbance boundar...
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Published in | Physics of fluids (1994) Vol. 27; no. 5 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Melville
American Institute of Physics
01.05.2015
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Subjects | |
Online Access | Get full text |
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Summary: | The spatial, linear stability of an incompressible parallel boundary layer flow with uniform suction through the wall is studied for the case of rigid and flexible bounding surfaces. It is demonstrated, first, that the effect of the plate’s permeability is crucial in defining the disturbance boundary conditions at the wall, and that stability limits depend strongly on it. Next, the combined effect of plate’s permeability and compliance on the onset of Tollmien-Schlichting modes is assessed. Finally, the possible insurgence of an absolute instability mode is studied, as function of the Reynolds number, the modulus of elasticity of the plate, and its permeability. |
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ISSN: | 1070-6631 1089-7666 |
DOI: | 10.1063/1.4921422 |