Locked-in flow tones due to shear flow over a deep cavity are investigated using Large Eddy Simulation (LES). An isentropic from of the compressible Navier-Stokes equations (pseudo-compressibility) is used to couple the vertical flow over the cavity mouth with the deep cavity resonances (1). Comparisons to published experimental data (2) show that the pseudo-compressible LES formulation is capable of predicting the feedforward excitation of the deep cavity resonator, as well as the feedback process from the resonator to the flow source. By systematically increasing the resonator damping level, it is shown that strong lock-in results in a more organized shear layer than is observed for the locked-out flow state. By comparison, weak interactions (non-locked-in) produce no change in the shear layer characteristics. This supports the 40 dB definition of lock-in defined in the experiment.
Skip Nav Destination
Close
Sign In or Register for Account
ASME 2006 International Mechanical Engineering Congress and Exposition
November 5–10, 2006
Chicago, Illinois, USA
Conference Sponsors:
- Noise Control and Acoustics Division
ISBN:
0-7918-4776-4
PROCEEDINGS PAPER
CFD Simulation of Flow Tones From Grazing Flow Past a Deep Cavity
Ted G. Bagwell
Ted G. Bagwell
Lockheed Martin
Search for other works by this author on:
Ted G. Bagwell
Lockheed Martin
Paper No:
IMECE2006-15633, pp. 105-114; 10 pages
Published Online:
December 14, 2007
Citation
Bagwell, TG. "CFD Simulation of Flow Tones From Grazing Flow Past a Deep Cavity." Proceedings of the ASME 2006 International Mechanical Engineering Congress and Exposition. Noise Control and Acoustics. Chicago, Illinois, USA. November 5–10, 2006. pp. 105-114. ASME. https://doi.org/10.1115/IMECE2006-15633
Download citation file:
- Ris (Zotero)
- Reference Manager
- EasyBib
- Bookends
- Mendeley
- Papers
- EndNote
- RefWorks
- BibTex
- ProCite
- Medlars
Close
Sign In
14
Views
0
Citations
Related Proceedings Papers
Related Articles
Numerical Simulations of Coherent Vortices in Turbulence
Appl. Mech. Rev (March,1995)
Simulation of Three-Dimensional Shear Flow Around a Nozzle-Afterbody at High Speeds
J. Fluids Eng (June,1992)
Fluid-Elastic Lock-in of a Cavity Shear Layer Instability With the Modes of a Submerged Cantilevered Beam
J. Vib. Acoust (December,2019)
Related Chapters
Vortex-Induced Vibration
Flow Induced Vibration of Power and Process Plant Components: A Practical Workbook
Comparing Fault-Tolerant Architecture for Automotive Safety Applications in Light of IEC 61508
International Conference on Computer Technology and Development, 3rd (ICCTD 2011)
MobileObject: Advanced Features
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)