Analysis of a rectangular supersonic multi-stream jet by LES and experiments

Matthew G. Berry, Cory M. Stack, Mohd Y. Ali, Andrew S. Magstadt, Datta V. Gaitonde, Mark N Glauser

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

This paper focuses on the analysis of a rectangular supersonic multi-stream jet with aft deck using large eddy simulation (LES) and experimental data. Proper orthogonal decomposition (POD) and Dynamic mode decomposition (DMD) are applied to timeresolved schlieren, stereo particle image velocimetry (PIV), and LES data. The spatial eigenfunctions of the two datasets reveal similar trends in the flow field, where structures with high mean squared value propagate from the nozzle lip and mixing layer. In the schlieren, acoustic waves can also be seen radiating from the nozzle lip and edge of the aft deck. By combining the spatial eigenfunctions from the schlieren experiment and the time-dependent snapshots of the LES, low-dimensional time characteristics for the flow are reconstructed. Additionally, we compare the spatial modes from the PIV and LES to determine how well the coherent structures are being captured in the simulation.

Original languageEnglish (US)
Title of host publication10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
PublisherInternational Symposium on Turbulence and Shear Flow Phenomena, TSFP10
Volume4
ISBN (Electronic)9780000000002
StatePublished - 2017
Event10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017 - Chicago, United States
Duration: Jul 6 2017Jul 9 2017

Other

Other10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017
CountryUnited States
CityChicago
Period7/6/177/9/17

ASJC Scopus subject areas

  • Atmospheric Science
  • Aerospace Engineering

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  • Cite this

    Berry, M. G., Stack, C. M., Ali, M. Y., Magstadt, A. S., Gaitonde, D. V., & Glauser, M. N. (2017). Analysis of a rectangular supersonic multi-stream jet by LES and experiments. In 10th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2017 (Vol. 4). International Symposium on Turbulence and Shear Flow Phenomena, TSFP10.