Numerical investigation of double-cone flows with high enthalpy effects

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

2 Scopus citations

Abstract

A numerical study of shock/shock and shock/boundary layer interactions generated by a double-cone model that is placed in a hypersonic free-stream is presented. Computational results are compared with the experimental measurements made at the CUBRC LENS facility for nitrogen flows at high enthalpy conditions. The CFD predictions agree well with surface pressure and heat-flux measurements for all but one of the double-cone cases that have been studied by the authors. Unsteadiness is observed in computations of one of the LENS cases, however for this case the experimental measurements show that the flowfield is steady. To understand this discrepancy, several double-cone experiments performed in two different facilities with both air and nitrogen as the working gas are examined in the present study. Computational results agree well with measurements made in both the AEDC tunnel 9 and the CUBRC LENS facility for double-cone flows at low free-stream Reynolds numbers where the flow is steady. It is shown that at higher freestream pressures the double-cone simulations develop instabilities that result in an unsteady separation.

Original languageEnglish (US)
Title of host publicationProceedings of the 6th European Symposium on Aerothermodynamics for Space Vehicles
StatePublished - Jun 17 2009
Event6th European Symposium Aerothermodynamics for Space Vehicles - Versailles, France
Duration: Nov 3 2008Nov 6 2008

Publication series

NameEuropean Space Agency, (Special Publication) ESA SP
Volume659 SP
ISSN (Print)0379-6566

Other

Other6th European Symposium Aerothermodynamics for Space Vehicles
CountryFrance
CityVersailles
Period11/3/0811/6/08

Keywords

  • Double cone
  • Hypersonic
  • Shock boundary layer interactions
  • Unsteadiness.

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    Nompelis, I., & Candler, G. V. (2009). Numerical investigation of double-cone flows with high enthalpy effects. In Proceedings of the 6th European Symposium on Aerothermodynamics for Space Vehicles (European Space Agency, (Special Publication) ESA SP; Vol. 659 SP).