Irregular self-similar configurations of shock-wave impingement on shear layers

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Show simple item record Martínez Ruiz, Daniel Huete Ruiz de Lira, César Martinez Ferrer, Pedro J. Mira, Daniel 2021-05-12T10:57:26Z 2021-05-12T10:57:26Z 2019-08-10
dc.identifier.bibliographicCitation Martínez-Ruiz, D., Huete, C., Martínez-Ferrer, P. J. & Mira, D. (2019). Irregular self-similar configurations of shock-wave impingement on shear layers. Journal of Fluid Mechanics, vol. 872, pp. 889–927.
dc.identifier.issn 0022-1120
dc.description.abstract An oblique shock impinging on a shear layer that separates two uniform supersonic streams, of Mach numbers M1 and M2, at an incident angle σi can produce regular and irregular interactions with the interface. The region of existence of regular shock refractions with stable flow structures is delineated in the parametric space (M1,M2,σi) considering oblique-shock impingement on a supersonic vortex sheet of infinitesimal thickness. It is found that under supercritical conditions, the oblique shock fails to deflect both streams consistently and to provide balanced flow properties downstream. In this circumstance, the flow renders irregular configurations which, in the absence of characteristic length scales, exhibit self-similar pseudosteady behaviours. These cases involve shocks moving upstream at constant speed and increasing their intensity to comply with equilibrium requirements. Differences in the variation of propagation speed among the flows yield pseudosteady configurations that grow linearly with time. Supercritical conditions are described theoretically and reproduced numerically using highly resolved inviscid simulation.
dc.format.extent 39
dc.language.iso eng
dc.publisher Cambridge University Press
dc.rights © 2019 Cambridge University Press
dc.rights Atribución-NoComercial-SinDerivadas 3.0 España
dc.subject.other Free shear layers
dc.subject.other High-speed flow
dc.subject.other Shock waves
dc.title Irregular self-similar configurations of shock-wave impingement on shear layers
dc.type article
dc.subject.eciencia Física
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 889
dc.identifier.publicationlastpage 927
dc.identifier.publicationtitle Journal of Fluid Mechanics
dc.identifier.publicationvolume 872
dc.identifier.uxxi AR/0000024743
dc.affiliation.dpto UC3M. Departamento de Ingeniería Térmica y de Fluidos
dc.affiliation.grupoinv UC3M. Grupo de Investigación: Mecánica de Fluidos
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