Numerical investigation of subharmonic resonance triads in a Mach 3 boundary layer

Marcus Zengl, Dominic Von Terzi, Hermann Fasel

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

1 Scopus citations

Abstract

The possibility of a subharmonic-resonance triad in the transition process for a flat-plate boundary layer at Mach three was demonstrated using Direct Numerical Simulations (DNS). The parameters controlling such a resonance triad were investigated in detail. Finally, the interaction of this triad with the so-called 'oblique breakdown' scenario was studied. To this end, the mechanisms were invoked separately and in combination. By itself the oblique breakdown leads to a faster growth of instability waves than the subharmonic resonance. However, in a combination with a subharmonic-resonance triad, the dominant modes of the oblique breakdown experience a slower growth, whereas those of the subharmonic resonance are more amplified. Overall, the interaction promotes transition and the rise in skin friction and the drop in shape factor are moved upstream when compared to the oblique breakdown.

Original languageEnglish (US)
Title of host publication7th IUTAM Symposium on Laminar-Turbulent Transition - Proceedings of the 7th IUTAM Symposium on Laminar-Turbulent Transition
Pages445-450
Number of pages6
DOIs
StatePublished - Dec 1 2010
Event7th IUTAM Symposium on Laminar-Turbulent Transition - Stockholm, Sweden
Duration: Jun 23 2009Jun 26 2009

Publication series

NameIUTAM Bookseries
Volume18
ISSN (Print)1875-3507

Other

Other7th IUTAM Symposium on Laminar-Turbulent Transition
CountrySweden
CityStockholm
Period6/23/096/26/09

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ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Automotive Engineering
  • Aerospace Engineering
  • Acoustics and Ultrasonics
  • Mechanical Engineering

Cite this

Zengl, M., Von Terzi, D., & Fasel, H. (2010). Numerical investigation of subharmonic resonance triads in a Mach 3 boundary layer. In 7th IUTAM Symposium on Laminar-Turbulent Transition - Proceedings of the 7th IUTAM Symposium on Laminar-Turbulent Transition (pp. 445-450). (IUTAM Bookseries; Vol. 18). https://doi.org/10.1007/978-90-481-3723-7-72