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An Algorithm for the Recovery of 2- and 3-D BiGlobal Instabilities of Compressible Flow Over 2-D Open Cavities

Theofilis, V. and Colonius, T. (2003) An Algorithm for the Recovery of 2- and 3-D BiGlobal Instabilities of Compressible Flow Over 2-D Open Cavities. In: 33rd AIAA Fluid Dynamics Conference and Exhibit, 23-26 June 2003, Orlando, FL. https://resolver.caltech.edu/CaltechAUTHORS:20190718-165126872

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Abstract

The identification of numerical residuals from direct numerical simulations (DNS) with the least-damped BiGlobal eigenmodes of an underlying steady-state permits extraction of both the steady-state and amplitude functions of the BiGlobal eigenmodes from simple algebraic operations. Algorithms for the calculation of the basic state and the spatial structure of the related BiGlobal eigenmodes from transient DNS data have been constructed and presented. Here we extend initial calculations for the (closed) incompressible lid-driven cavity to the related (compressible) open-cavity flow. Order-of-magnitude savings are demonstrated when using of the discussed algorithm for the calculation of the basic state, compared with straightforward time-integration of the equations of motion until convergence in time. Further, employing this algorithm, different classes of instabilities in the open cavity are unified in the framework of BiGlobal instability analysis.


Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2003-4143DOIConference Paper
https://arc.aiaa.org/doi/10.2514/6.2003-4143PublisherConference Paper
ORCID:
AuthorORCID
Colonius, T.0000-0003-0326-3909
Alternate Title:An Algorithm for the Recovery of 2- and 3D BiGlobal Instabilities of Compressible Flow Over 2D Open Cavities
Additional Information:© 2003 by the American Institute of Aeronautics and Astronautics, Inc. Published Online: 25 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. FA8655-03-1-3059 and F49620-02-1-0362 monitored by Dr. John D. Schmisseur (AFOSR) and Mr. Wayne Donaldson (EOARD).
Funders:
Funding AgencyGrant Number
European Office of Aerospace Research and DevelopmentUNSPECIFIED
Air Force Research Laboratory (AFRL)UNSPECIFIED
Air Force Office of Scientific Research (AFOSR)FA8655-03-1-3059
Air Force Office of Scientific Research (AFOSR)F49620-02-1-0362
Subject Keywords:Fluid Dynamics
Other Numbering System:
Other Numbering System NameOther Numbering System ID
AIAA Paper2003-4143
Record Number:CaltechAUTHORS:20190718-165126872
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190718-165126872
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97266
Collection:CaltechAUTHORS
Deposited By: Melissa Ray
Deposited On:24 Jul 2019 19:49
Last Modified:03 Oct 2019 21:29

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