Receptivity of high-speed boundary layers in binary mixture of gases to kinetic fluctuations

Kevin Luna, Anatoli Tumin

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

1 Scopus citations


The receptivity of high-speed boundary layers in a binary mixture of gases (oxygen and nitrogen) to kinetic fluctuations (KF) is considered within the framework of fluctuating hydrodynamics. The formulation is based on the idea that KF-induced dissipative fluxes may lead to the generation of unstable modes in the boundary layer. It is assumed that KF manifest themselves in this context through “stochastic forcing” by a random stress tensor, a random heat flux, a random species diffusion, and a random chemical source term. The approach taken here follows that of Fedorov and Tumin (2017), but includes previously unconsidered effects such as fluctuating species diffusion and fluctuating species production. It is found that the boundary layer flow is most susceptible to kinetic fluctuations in the critical layer and that the fluctuations of the shear stress in the streamwise momentum equation are the dominant fluctuations. These results are in agreement with previous results for the case of a one-component perfect gas.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
StatePublished - 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum


ConferenceAIAA Scitech Forum, 2019
Country/TerritoryUnited States
CitySan Diego

ASJC Scopus subject areas

  • Aerospace Engineering


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