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Acoustic receptivity simulations of flow past a flat plate with elliptic leading edge

Published online by Cambridge University Press:  13 July 2016

Nima Shahriari ,
Daniel J. Bodony ,
Ardeshir Hanifi  and
Dan S. Henningson
Nima Shahriari*
Affiliation:
Department of Mechanics, Linné FLOW Centre and Swedish e-Science Research Centre (SeRC), KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
Daniel J. Bodony
Affiliation:
Department of Aerospace Engineering, University of Illinois at Urbana-Champaign, Illinois 61801, USA
Ardeshir Hanifi
Affiliation:
Department of Mechanics, Linné FLOW Centre and Swedish e-Science Research Centre (SeRC), KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden Swedish Defence Research Agency, FOI, SE-164 90 Stockholm, Sweden
Dan S. Henningson
Affiliation:
Department of Mechanics, Linné FLOW Centre and Swedish e-Science Research Centre (SeRC), KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden
*
†Email address for correspondence: nima@mech.kth.se
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Abstract

We present results of numerical simulations of leading-edge acoustic receptivity for acoustic waves impinging on the leading edge of a finite-thickness flat plate. We use both compressible and incompressible flow solvers fitted with high-order high-accuracy numerical methods and independent methods of estimating the receptivity coefficient. The results show that the level of acoustic receptivity in the existing literature appears to be one order of magnitude too high. Our review of previous numerical simulations and experiments clearly identifies some contradictory trends. In the limit of an infinitely thin flat plate, our results are consistent with asymptotic theory and numerical simulations.

JFM classification

Boundary Layers: Boundary Layers Boundary Layers: Boundary layer receptivity Boundary Layers: Boundary layer stability
Type
Rapids
Information
Journal of Fluid Mechanics , Volume 800 , 10 August 2016 , R2
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Copyright
© 2016 Cambridge University Press 

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