Instability mechanisms in supersonic base flows

R. D. Sandberg, H. F. Fasel

Research output: Contribution to conferencePaperpeer-review

12 Scopus citations


The hydrodynamic stability behavior of the near-wake is investigated using Direct Numerical Simulations (DNS) for a supersonic axisymmetric baseflow at M=2.46. As a consequence of the instability, coherent structures evolve that influence the mean flow behavior. Results are presented for two different Reynolds numbers, ReD = 30, 000 and ReD = 60,000. For these investigations, a high-order accurate compressible Navier-Stokes solver in cylindrical coordinates was developed. Simulations with various domain-sizes were performed to investigate the instability behavior to different azimuthal modes.

Original languageEnglish (US)
Number of pages12
StatePublished - 2004
Event42nd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 5 2004Jan 8 2004


Other42nd AIAA Aerospace Sciences Meeting and Exhibit
Country/TerritoryUnited States
CityReno, NV

ASJC Scopus subject areas

  • General Engineering


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