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Non-Parallel Acoustic Receptivity of a Blasius Boundary Layer Using an Adjoint Approach

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Abstract

Localized and non-localized acoustic receptivity for a Blasius boundary layer is investigated using the adjoint Parabolized Stability Equations. The scattering of an acoustic wave onto a hump, a rectangular roughness or a wall steady blowing and suction is described. Comparisons with local approaches, triple deck theory, direct numerical simulations and experiments are successfully shown. Non-parallel effects are discussed. For comparable parameters, the non-localized receptivity problem produces amplitudes one order of magnitude larger than for the case of localized receptivity.

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  1. Institut de Mécanique des Fluides de Toulouse, Allée du Professeur Camille Soula, F-31400, Toulouse, France

    Christophe Airiau

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  1. Christophe Airiau
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Airiau, C. Non-Parallel Acoustic Receptivity of a Blasius Boundary Layer Using an Adjoint Approach. Flow, Turbulence and Combustion 65, 347–367 (2000). https://doi.org/10.1023/A:1011472831831

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