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Navier-Stokes Simulation of Harmonic Point Disturbances in an Airfoil Boundary Layer

Laminar-turbulent transition mechanisms induced by a harmonic point source disturbance in a flat-plate boundary layer with adverse pressure gradient are investigated by fourth-order accurate spatial direct numerical simulation based on the complete three-dimensional Navier-Stokes equations for incom...

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Bibliographic Details
Published in:AIAA journal 2000-08, Vol.38 (8), p.1369-1376
Main Authors: Stemmer, Christian, Kloker, Markus J, Wagner, Siegfried
Format: Article
Language:English
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Summary:Laminar-turbulent transition mechanisms induced by a harmonic point source disturbance in a flat-plate boundary layer with adverse pressure gradient are investigated by fourth-order accurate spatial direct numerical simulation based on the complete three-dimensional Navier-Stokes equations for incompressible flow. The disturbance is introduced into the two-dimensional base flow by time-periodic simultaneous blowing and suction within a circular spot at the wall to quietly mimic the momentum input by an active loudspeaker below a hole in the surface in respective experiments.
ISSN:0001-1452
1533-385X
DOI:10.2514/2.1136