The Second Mode in High-enthalpy Boundary Layers in Chemical Non-equilibrium

Jill Klentzman, Anatoli Tumin

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Boundary layers at a zero pressure gradient in chemical non-equilibrium are considered for a five-species model of air in a total enthalpy range of 5 - 17 MJ/kg. Comparisons with boundary layers in binary mixtures of oxygen reveal that the growth rates of the second mode are lower in the case of air. This result can be attributed to the lower wall temperatures in binary mixtures of oxygen due to dissociation, with the lower wall temperatures having a destabilizing effect on the second mode similar to the case of boundary layers in calorically perfect gases.

Original languageEnglish (US)
Pages (from-to)45-47
Number of pages3
JournalProcedia IUTAM
StatePublished - 2015
Event8th IUTAM-ABCM Symposium on Laminar Turbulent Transition, LTT 2014 - Rio de Janeiro, Brazil
Duration: Sep 8 2014Sep 12 2014


  • Stability
  • boundary layer
  • high enthalpy air

ASJC Scopus subject areas

  • Mechanical Engineering


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