Stability and admittance of a channel flow over a permeable interface

The stability and the admittance analysis are considered for a Poiseuille flow running over a permeable slab. The case where a suction, due to a cross flow, is present through both the channel and the porous slab is also dealt with. An analytic solution is found for the basic flow in the entire fiel...

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Bibliographic Details
Published in:Physics of fluids (1994) 2005-09, Vol.17 (9), p.094103-094103-7
Main Authors: de Socio, L. M., Marino, L., Seminara, G.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Flows in ducts, channels, nozzles, and conduits
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Laminar flows
Physics
Stability of laminar flows
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Summary:The stability and the admittance analysis are considered for a Poiseuille flow running over a permeable slab. The case where a suction, due to a cross flow, is present through both the channel and the porous slab is also dealt with. An analytic solution is found for the basic flow in the entire field whereas the stability analysis and the evaluation of the admittance at the interface are numerically carried out. The errors made in the usually simplified analyses are fully discussed.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.2008265