Receptivity of turbulent compressible mixing layers to localized energy deposition

Luhong Wu, Anatoli Tumin

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

Abstract

A theoretical model of turbulent mixing layer receptivity to localized energy deposition is proposed. The triple decomposition is utilized for the flow field. The model is based on the biorthogonal eigenfunction expansion for the coherent (phase average) part of the perturbations. The mixing layer flows in the considered examples of two-dimensional perturbations are more susceptible to higher frequencies. However, the low frequencies are more unstable, and the overall effect depends on receptivity and downstream amplification of the perturbations. Nonparallel flow effects are included into consideration. It was found that the there is a dominant frequency in a wave packet of perturbations that depends on the downstream observation point location.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - Jan 1 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

Fingerprint

Wave packets
Eigenvalues and eigenfunctions
Amplification
Flow fields
Decomposition

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Wu, L., & Tumin, A. (2019). Receptivity of turbulent compressible mixing layers to localized energy deposition. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-1652

Receptivity of turbulent compressible mixing layers to localized energy deposition. / Wu, Luhong; Tumin, Anatoli.

AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).

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

Wu, L & Tumin, A 2019, Receptivity of turbulent compressible mixing layers to localized energy deposition. in AIAA Scitech 2019 Forum. AIAA Scitech 2019 Forum, American Institute of Aeronautics and Astronautics Inc, AIAA, AIAA Scitech Forum, 2019, San Diego, United States, 1/7/19. https://doi.org/10.2514/6.2019-1652
Wu L, Tumin A. Receptivity of turbulent compressible mixing layers to localized energy deposition. In AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA. 2019. (AIAA Scitech 2019 Forum). https://doi.org/10.2514/6.2019-1652
Wu, Luhong ; Tumin, Anatoli. / Receptivity of turbulent compressible mixing layers to localized energy deposition. AIAA Scitech 2019 Forum. American Institute of Aeronautics and Astronautics Inc, AIAA, 2019. (AIAA Scitech 2019 Forum).
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