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Numerical Simulation of the Oscillations in a Mixer - An Internal Aeroacoustic Feedback System

  • Philip C. E. Jorgenson
  • Ching Y. Loh

Summary

The space-time conservation element and solution element method is employed to numerically study the acoustic feedback system in a high temperature, high speed wind tunnel mixer. The computation captures the self-sustained feedback loop between reflecting Mach waves and the shear layer. This feedback loop results in violent instabilities that are suspected of causing damage to some tunnel components. The computed frequency is in good agreement with the available experimental data. The physical phenomena are explained based on the numerical results.

Keywords

Wind Tunnel Shear Layer Nozzle Throat Shock Cell Mach Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    J.S. Hodge and S.F. Harvin, ‘Test Capabilities and Recent Experiences in the NASA Langley 8-Foot High Temperature Tunnel’, AIAA Paper 2000-2646.Google Scholar
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Philip C. E. Jorgenson
    • 1
  • Ching Y. Loh
    • 2
  1. 1.NASA Glenn Research Center at Lewis FieldClevelandUSA
  2. 2.Taitech Inc.ClevelandUSA

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