Instability mechanisms in supersonic base flows

R. D. Sandberg, Hermann F Fasel

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

6 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, Re D = 30, 000 and Re D = 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)
Title of host publicationAIAA Paper
Number of pages12
Publication statusPublished - 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
CountryUnited States
CityReno, NV


ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sandberg, R. D., & Fasel, H. F. (2004). Instability mechanisms in supersonic base flows. In AIAA Paper (pp. 5803-5814)