Study of discrete modes branching in high-speed boundary layers

Yuli Lifshitz, David Degani, Anatoli Tumin

Research output: Contribution to conferencePaper

Abstract

The branching of discrete modes in high-speed boundary layers is investigated using the Parabolized Stability Equations (PSE). The fast and slow discrete modes associated with the fast and slow acoustic modes, respectively, are considered in high-speed boundary layers over adiabatic and cooled walls. Whereas the conventional Linear Stability Theory (LST) approach leads to singular behavior in the vicinity of the fast mode synchronization with the entropy and vorticity modes, the PSE results do not reveal singular behavior of the solution and are consistent with the available Direct Numerical Simulations (DNS) of perturbations in high-speed boundary layers. Also, the PSE results do not reveal a singular behavior in the vicinity of the point of synchronism of the slow and fast discrete modes.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2012
Event50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Nashville, TN, United States
Duration: Jan 9 2012Jan 12 2012

Other

Other50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityNashville, TN
Period1/9/121/12/12

ASJC Scopus subject areas

  • Aerospace Engineering

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    Lifshitz, Y., Degani, D., & Tumin, A. (2012). Study of discrete modes branching in high-speed boundary layers. Paper presented at 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Nashville, TN, United States. https://doi.org/10.2514/6.2012-919