Geodesic
Theoretical investigation of conditions for the appearance of high-speed bufting
Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, Tome 29 (2019) no. 3, pp. 382-395
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Numerically, the phenomenon of the appearance of high-speed bufting is investigated for the case of a transonic flow past the NACA0012 airfoil. A mathematical model based on high-order approximation algorithms is formulated, which makes it possible to calculate nonstationary separated flows. The model is based on the integration of quasi-hydrodynamic equations. A parametric investigation of high-velocity viscous gas flow past an airfoil as a function of the angle of attack is carried out. Both instantaneous and averaged flow patterns are analyzed. The distributions of the pulsation characteristics of flows are obtained at different angles of attack. Regularities in the onset of detachment of the boundary layer are revealed, and the effect of shock waves on the nature of the flow near the surface of the airfoil is determined. The critical angle of attack at which high-speed bufting begins is determined.
Keywords: high-speed buffeting, shock waves, direct numerical simulation, high-order approximation.
Mots-clés : quasi-hydrodynamic equations 
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     title = {Theoretical investigation of conditions for the appearance of high-speed bufting},
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A. M. Lipanov; S. A. Karskanov; S. L. Chernyshev; I. I. Lipatov. Theoretical investigation of conditions for the appearance of high-speed bufting. Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki, Tome 29 (2019) no. 3, pp. 382-395. http://geodesic.mathdoc.fr/item/VUU_2019_29_3_a7/

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