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Three-dimensional instabilities of compressible flow over open cavities: direct solution of the BiGlobal eigenvalue problem

Theofilis, V. and Colonius, T. (2004) Three-dimensional instabilities of compressible flow over open cavities: direct solution of the BiGlobal eigenvalue problem. In: 34th AIAA Fluid Dynamics Conference and Exhibit, 28 June-1 July 2004, Portland, OR.

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We report progress in our ongoing effort to compute and understand the instabilities of open cavity flows from incompressible to supersonic speeds. We consider three-dimensional instabilities of nominally two dimensional (spanwise homogeneous) cavity flows (BiGlobal instabilities). Experiments, DNS/LES computations, and preliminary instability computations have shown that the modes of oscillation are influenced by complex interactions between the shear layer and the recirculating flow within the cavity. We present here a framework for computation of the two-dimensional eigenvalue problem for the compressible open cavity. We validate the numerical scheme by computing several canonical flows: square duct flow, boundary layers at speeds from incompressible to supersonic, and two-dimensional parallel shear layers. We present preliminary results for the three-dimensional modes of the compressible open cavity flow with length-to-depth ratio of two at a Mach number of 0.325.

Item Type:Conference or Workshop Item (Paper)
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URLURL TypeDescription Paper Paper
Colonius, T.0000-0003-0326-3909
Alternate Title:Three-Dimensional Instabilities of Compressible Flow over Open Cavities: Direct Solution of hte BiGlobal Eivenvalue Problem
Additional Information:© 2004 by the American Institute of Aeronautics and Astronautics, Inc. Published Online: 19 Jun 2012. The material is based upon work supported by the European Office of Aerospace Research and Development, Air Force Research Laboratory, Air Force Office of Scientific Research, under Grants No. F49620-02-1-0362 (Caltech) and FA8655-03-1-3059 (nu modelling S.L.) monitored by Dr. John D. Schmisseur (AFOSR) and Mr. Wayne Donaldson (EOARD).
Funding AgencyGrant Number
European Office of Aerospace Research and DevelopmentUNSPECIFIED
Air Force Research Laboratory (AFRL)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)F49620-02-1-0362
Air Force Office of Scientific Research (AFOSR)FA8655-03-1-3059
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AIAA Paper2004-2544
Record Number:CaltechAUTHORS:20190718-165126795
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97265
Deposited By: Melissa Ray
Deposited On:24 Jul 2019 19:48
Last Modified:16 Nov 2021 17:30

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