Influence of turbulent grazing flow on the impedance of an opening
conference paper
In this paper, the impedance of a rectangular opening submitted to a turbulent grazing flow is investigated experimentally. The opening is located in a flat plate where a turbulent boundary layer flow develops. The impedance is measured with a two-microphone measuring pipe installed below the opening. The opening has a rectangular shape of large aspect ratio. With the long side oriented perpendicular to the flow. The results, the contribution due to the flow of the acoustic resistance and length correction, are non-dimensionalized and compared with equivalent values computed with a vortex-sheet model.
Topics
TNO Identifier
237480
Source title
Proceedings of the Tenth International Congress on Sound and Vibration, 7-10 July 2003, Stockholm, Sweden
Editor(s)
Nilson, A.
Boden, H.
Boden, H.
Collation
8 p.
Pages
3303-3310
Files
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