Factors influencing flow steadiness in laminar boundary layer shock interactions

Ozgur Tumuklu, Deborah A. Levin, Sergey F. Gimelshein, Joanna M. Austin

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

Abstract

The Direct Simulation Monte Carlo method has been used to model laminar shock wave boundary interactions of hypersonic flow over a 30/55-deg double-wedge and "tick-shaped" model configurations studied in the Hypervelocity Expansion Tube facility and T-ADFA free-piston shock tunnel, respectively. The impact of thermochemical effects on these interactions by changing the chemical composition from nitrogen to air as well as argon for a stagnation enthalpy of 8.0MJ/kg flow are investigated using the 2-D wedge model. The simulations are found to reproduce many of the classic features related to Edney Type V strong shock interactions that include the attached, oblique shock formed over the first wedge, the detached bow shock from the second wedge, the separation zone, and the separation and reattachment shocks that cause complex features such as the triple point for both cases. However, results of a reacting air flow case indicate that the size of the separation length, and the movement of the triple point toward to the leading edge is much less than the nitrogen case.

Original languageEnglish (US)
Title of host publication30th International Symposium on Rarefied Gas Dynamics, RGD 2016
EditorsHenning Struchtrup, Andrew Ketsdever
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414488
DOIs
StatePublished - Nov 15 2016
Event30th International Symposium on Rarefied Gas Dynamics, RGD 2016 - Victoria, Canada
Duration: Jul 10 2016Jul 15 2016

Publication series

NameAIP Conference Proceedings
Volume1786
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other30th International Symposium on Rarefied Gas Dynamics, RGD 2016
CountryCanada
CityVictoria
Period7/10/167/15/16

Keywords

  • DSMC
  • Hypersonic flow
  • Reacting air
  • Separated flow
  • Velocity slip

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Tumuklu, O., Levin, D. A., Gimelshein, S. F., & Austin, J. M. (2016). Factors influencing flow steadiness in laminar boundary layer shock interactions. In H. Struchtrup, & A. Ketsdever (Eds.), 30th International Symposium on Rarefied Gas Dynamics, RGD 2016 [050005] (AIP Conference Proceedings; Vol. 1786). American Institute of Physics Inc.. https://doi.org/10.1063/1.4967555