Flow Structures Associated with Turbulent Mixing Noise and Screech Tones in Axisymmetric Jets

Andrew S. Magstadt, Matthew G. Berry, Zachary P. Berger, Patrick R. Shea, Christopher J. Ruscher, Sivaram P. Gogineni, Mark N. Glauser

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A jet from an axisymmetric convergent nozzle is studied at ideal and underexpanded conditions using velocity and acoustic data. Two particle imaging velocimetry setups, a 10 kHz system and a multi-camera configuration, were used to capture near-field velocities while simultaneously sampled with far-field microphones. Proper orthogonal decomposition is performed on the velocity data to extract modes representative of physical processes in the flow. The decomposed velocity fields are then correlated with acoustic data to identify modes related to specific noise spectra. Specifically, four modes are associated with noise production in the sonic plume. Selective flow-field reconstruction is carried out, revealing interesting dynamics associated with loud flow states. In the supersonic case, screech-containing and turbulent mixing modes are isolated. The spatial modes of each data set are then compared for similarities in structures.

Original languageEnglish (US)
Pages (from-to)725-750
Number of pages26
JournalFlow, Turbulence and Combustion
Volume98
Issue number3
DOIs
StatePublished - Apr 1 2017

Fingerprint

screech tones
turbulent mixing
Flow structure
Acoustics
convergent nozzles
Microphones
Acoustic noise
Velocity measurement
acoustics
noise spectra
Nozzles
Flow fields
microphones
Cameras
plumes
far fields
Decomposition
near fields
flow distribution
Imaging techniques

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Magstadt, A. S., Berry, M. G., Berger, Z. P., Shea, P. R., Ruscher, C. J., Gogineni, S. P., & Glauser, M. N. (2017). Flow Structures Associated with Turbulent Mixing Noise and Screech Tones in Axisymmetric Jets. Flow, Turbulence and Combustion, 98(3), 725-750. https://doi.org/10.1007/s10494-016-9784-8
Magstadt, Andrew S. ; Berry, Matthew G. ; Berger, Zachary P. ; Shea, Patrick R. ; Ruscher, Christopher J. ; Gogineni, Sivaram P. ; Glauser, Mark N. / Flow Structures Associated with Turbulent Mixing Noise and Screech Tones in Axisymmetric Jets. In: Flow, Turbulence and Combustion. 2017 ; Vol. 98, No. 3. pp. 725-750.
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Flow Structures Associated with Turbulent Mixing Noise and Screech Tones in Axisymmetric Jets. / Magstadt, Andrew S.; Berry, Matthew G.; Berger, Zachary P.; Shea, Patrick R.; Ruscher, Christopher J.; Gogineni, Sivaram P.; Glauser, Mark N.

In: Flow, Turbulence and Combustion, Vol. 98, No. 3, 01.04.2017, p. 725-750.

Research output: Contribution to journalArticle

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