Prediction of laminar-to-turbulent transition in a separated boundary layer subjected to an external acoustic forcing

• Autorzy: Kubacki S. , Rarata Z. , Drózdz A. , Gnatowska R. , Sokolenko V. , Elsner W.

Identyfikatory

DOI

10.24423/aom.4353

• Języki publikacji: EN

Abstrakty

EN

The new Reynolds-averaged Navier–Stokes (RANS)-based method has been developed for taking into account, in an approximate manner, the effect of external acoustic forcing on laminar-to-turbulent transition in a separated boundary layer. Experimental studies [33] report an increase of the turbulent shear stress within the separated boundary layer under the influence of acoustic forcing. Enhancement of flow disturbances in a reversed flow region was also reported in our experiment. Experimental findings stimulated the development of a reduced-order aero-acoustic strategy. The effect of acoustic forcing was incorporated into the modelling framework of an algebraic intermittency model. The model component was tuned based on our experimental data and validated on reference experiments. The results show the feasibility of the proposed model to simulate flow over a flat plate and the NACA0018 profile.

Słowa kluczowe

EN

laminar-to-turbulent transition; separated boundary layer; acoustic excitation; algebraic intermittency model

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2023
• Tom: Vol. 75, nr 5
• Strony: 591--616
• Opis fizyczny: Bibliogr. 34 poz., rys., tab., wykr.

Twórcy

autor

Kubacki S.

• Warsaw University of Technology, Faculty of Power and Aeronautical Engineering, Institute of Aeronautics and Applied Mechanics, Nowowiejska 24, 00-665, Warsaw, Poland

autor

Rarata Z.

• Warsaw University of Technology, Faculty of Power and Aeronautical Engineering, Institute of Aeronautics and Applied Mechanics, Nowowiejska 24, 00-665, Warsaw, Poland

autor

Drózdz A.

• Czestochowa University of Technology, Armii Krajowej 21, 42-200, Czestochowa, Poland

autor

Gnatowska R.

• Czestochowa University of Technology, Armii Krajowej 21, 42-200, Czestochowa, Poland

autor

Sokolenko V.

• Czestochowa University of Technology, Armii Krajowej 21, 42-200, Czestochowa, Poland

autor

Elsner W.

• Czestochowa University of Technology, Armii Krajowej 21, 42-200, Czestochowa, Poland

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