Direct numerical simulations of transitional supersonic base flows

Richard D. Sandberg, Hermann Fasel

Research output: Contribution to conferencePaper

6 Scopus citations

Abstract

Investigations of transitional supersonic base flows at M = 2.46 using Direct Numerical Simulations (DNS) are discussed. As a consequence of flow instabilities, coherent structures evolve that have a profound impact on the global flow behavior. Simulations with various circumferential domain sizes are performed to investigate the effect of coherent structures associated with different azimuthal modes on the mean flow. It is shown that the mean base pressure increases when the most dominant modes are deliberately eliminated. Results are presented for Reynolds numbers between 30,000 and 100,000. The results obtained from the DNS at ReD = 100,000 are compared to experiments at ReD = 3,300,000. For these investigations, a high-order accurate compressible Navier-Stokes solver in cylindrical coordinates was developed.

Original languageEnglish (US)
Pages9569-9580
Number of pages12
DOIs
StatePublished - Jan 1 2005
Event43rd AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 10 2005Jan 13 2005

Other

Other43rd AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period1/10/051/13/05

ASJC Scopus subject areas

  • Engineering(all)

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    Sandberg, R. D., & Fasel, H. (2005). Direct numerical simulations of transitional supersonic base flows. 9569-9580. Paper presented at 43rd AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, United States. https://doi.org/10.2514/6.2005-98