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Visualization of Mechanical Processes: An International Online Journal


ISSN Online: 2152-209X

Visualization of Mechanical Processes: An International Online Journal

DOI: 10.1615/VisMechProc.2017016256

HYSTERESIS OF A SUPERSONIC FLOW AROUND CIRCULAR CAVITIES

Sergey Vladimirovich Guvernyuk
Institute of Mechanics, Lomonosov Moscow State University
Mikhail Simonenko
Institute of Mechanics, Lomonosov Moscow State University
Aleksander F. Zubkov
Institute of Mechanics, Lomonosov Moscow State University

ABSTRACT

The phenomenon of hysteresis in axisymmetrical supersonic air flow over a circular cavity with the shape of a rectangular cutout on a cylindrical body with a conical tip is demonstrated. Photographs and a video clip of shadow patterns of the flow over a cavity during the continued variation of the cavity length are presented. The plot of the corresponding pressure change at the rear cavity wall has a typical form of the hysteresis loop. The presented experimental data will be useful to validate computational technologies, intended to simulate separated flows in cavities