Experimental investigation on the role of boundary layers around a supersonic cylinder in rarefied flows - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue AIP Conference Proceedings Année : 2024

Experimental investigation on the role of boundary layers around a supersonic cylinder in rarefied flows

Résumé

This paper describes the evolution of the boundary layer around a cylinder and its contribution to the drag force in supersonic rarefied flows. Experiments are performed at two different Mach numbers in the MARHy wind tunnel (formerly known as SR3). Shock-wave visualizations, aerodynamic force measurements and static wall-pressure measurement are compared with the evolution of the boundary-layer thickness and the skin-friction-drag coefficient for a large range of laminar Reynolds numbers and Knudsen numbers in the slip regime. The skin-friction-drag coefficient, together with the thickness of the boundary layer measured near the stagnation point are found to scale with the rarefaction coefficient defined by Tsien.

Dates et versions

hal-04578564 , version 1 (17-05-2024)

Identifiants

Citer

Léo Kovacs, Pierre-Yves Passaggia, Nicolas Mazellier, Viviana Lago. Experimental investigation on the role of boundary layers around a supersonic cylinder in rarefied flows. AIP Conference Proceedings, 2024, 2996 (1), pp.160002. ⟨10.1063/5.0187514⟩. ⟨hal-04578564⟩
13 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More