Numerical investigation of hypersonic transition for a flared and a straight cone at Mach 6

Andreas C. Laible, Hermann F. Fasel

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

12 Scopus citations

Abstract

Hypersonic boundary layer stability and transition for two different cone geometries at Mach 6 are studied using direct numerical simulation (DNS). The two geometries are (i) the flared cone investigated in the NASA Langley Test Chamber Facility1 and (ii) its straight (non-ared) counterpart. We present a detailed comparison between these geometries with respect to the base flow, i.e. the undisturbed laminar flow, and the linear stability regime. Furthermore, a parameter study regarding secondary fundamental instability was performed for each geometry. Then a wave which experienced a high secondary growth rate was used to initialize numerical simulations deep into the transitional regime. The resulting nonlinear process, which can be considered to be a 'classical' fundamental (K- type) breakdown, is analyzed in detail. By comparing the results for the two different geometries, qualitative and quantitative insight into the hypersonic transition process for flared cones is obtained. In particular the question how strong the nonlinear transition process is altered by the cone flare is discussed.

Original languageEnglish (US)
Title of host publication41st AIAA Fluid Dynamics Conference and Exhibit
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781600869471
DOIs
StatePublished - 2011
Event41st AIAA Fluid Dynamics Conference and Exhibit 2011 - Honolulu, HI, United States
Duration: Jun 27 2011Jun 30 2011

Publication series

Name41st AIAA Fluid Dynamics Conference and Exhibit

Other

Other41st AIAA Fluid Dynamics Conference and Exhibit 2011
CountryUnited States
CityHonolulu, HI
Period6/27/116/30/11

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

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    Laible, A. C., & Fasel, H. F. (2011). Numerical investigation of hypersonic transition for a flared and a straight cone at Mach 6. In 41st AIAA Fluid Dynamics Conference and Exhibit (41st AIAA Fluid Dynamics Conference and Exhibit). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2011-3565