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

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dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Mecánica de Fluidoses
dc.contributor.authorMartínez Ruiz, Daniel
dc.contributor.authorHuete Ruiz de Lira, César
dc.contributor.authorMartinez Ferrer, Pedro J.
dc.contributor.authorMira, Daniel
dc.date.accessioned2021-05-12T10:57:26Z
dc.date.available2021-05-12T10:57:26Z
dc.date.issued2019-08-10
dc.description.abstractAn 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.en
dc.format.extent39
dc.identifier.bibliographicCitationMartínez-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.en
dc.identifier.doihttp://doi.org/10.1017/jfm.2019.336
dc.identifier.issn0022-1120
dc.identifier.publicationfirstpage889
dc.identifier.publicationlastpage927
dc.identifier.publicationtitleJournal of Fluid Mechanicsen
dc.identifier.publicationvolume872
dc.identifier.urihttps://hdl.handle.net/10016/32610
dc.identifier.uxxiAR/0000024743
dc.language.isoeng
dc.publisherCambridge University Pressen
dc.rights© 2019 Cambridge University Pressen
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.accessRightsopen access
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subject.ecienciaFísicaes
dc.subject.otherFree shear layersen
dc.subject.otherHigh-speed flowen
dc.subject.otherShock wavesen
dc.titleIrregular self-similar configurations of shock-wave impingement on shear layersen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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