On the temporal evolution in laminar separated boundary layer shock-interaction flows using DSMC

Ozgur Tumuklu, Deborah A. Levin, Vassilis Theofilis

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

Abstract

Unsteadiness of a shock dominated hypersonic flow including shock wave boundary layer interactions and flow separation over a double cone, double- wedge and’tick’ configurations are investigated. The time accurate DSMC solutions combined with global linear stability and the residuals algorithm provide an opportunity to determine the damping rate, frequency and amplitude function of the least damped eigenmode. The residuals algorithm also permits predicting the corresponding steady state solution at a fraction of the DSMC simulation cost. It is observed that the time required to reach steady state is conditioned by the separation region and the shock wave boundary layer interaction. The oscillatory behavior of the residuals close to convergence in the double wedge calculation for the reacting air case can be explained by the existence and slow temporal decay of traveling linear global modes.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
StatePublished - Jan 1 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: Jan 9 2017Jan 13 2017

Publication series

NameAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting

Other

Other55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period1/9/171/13/17

ASJC Scopus subject areas

  • Aerospace Engineering

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    Tumuklu, O., Levin, D. A., & Theofilis, V. (2017). On the temporal evolution in laminar separated boundary layer shock-interaction flows using DSMC. In AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting [AIAA 2017-1614] (AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting). American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2017-1614