Výsledky vyhledávání - "O. S. Ryzhov"

Triple-Deck Instability of Supersonic Boundary Layers

Autor: O. S. Ryzhov

Publikováno v: AIAA Journal. 50:1733-1741

The purpose of the present study is to resolve a long-standing paradox intrinsic to the triple-deck theory that predicts stability of a supersonic boundary layer against two-dimensional disturbances for all Mach numbers M1 > 1 of the oncoming stream.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa1625f8b172930edd93af7a0782e421
https://doi.org/10.2514/1.j051534

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Generation of Irregular Disturbances and Solitarylike Waves in Transitional Boundary Layers

Autor: O. S. Ryzhov

Publikováno v: AIAA Journal. 49:1230-1239

The interrelation between erratic signals and large-sized coherent structures excited in boundary layers transitioning to turbulence is investigated. To shed light on the issue of fundamental importance, a new dynamical system has been put forward re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9c027ace5880394eff39d87ef25dac7b
https://doi.org/10.2514/1.j050624

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An analogy between vortical and thermal fields subject to the large pressure gradient

Autor: O. S. Ryzhov, E. V. Bogdanova-Ryzhova

Publikováno v: Zeitschrift für angewandte Mathematik und Physik. 62:305-321

Local thermal disturbances generated by a small confined mechanical forcing on the curved surface are under consideration within the framework of the interacting boundary layer in the limit of large Reynolds number. The variations of the self-induced

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::81f3bbbe7e660298713433828bca8ef0
https://doi.org/10.1007/s00033-010-0099-7

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A Blunt-Nosed Thin Body in Hypersonic Flow

Autor: Julian D. Cole, Norman Malmuth, O. S. Ryzhov

Publikováno v: SIAM Journal on Applied Mathematics. 58:345-369

An inverse problem is posed to simulate the influence of the nose bluntness on the hypersonic inviscid steady flow field around a slender two-dimensional section. In this formulation a bow shock is given in advance whereas the body contour comes at t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e045f863acb889df2e9ac5f070149b2e
https://doi.org/10.1137/s0036139996299492

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A composite asymptotic model for the wave motion in a steady three-dimensional subsonic boundary layer

Autor: E.D. Terent'ev, O. S. Ryzhov

Publikováno v: Journal of Fluid Mechanics. 337:103-128

The problem for a thin near-wall region is reduced, within the triple-deck approach, to unsteady three-dimensional nonlinear boundary-layer equations subject to an interaction law. A linear version of the boundary-value problem describes eigenmodes o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b5ee44b00233f6c510e12d6af480c0a
https://doi.org/10.1017/s0022112096004752

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Solitary-like waves in boundary-layer flows and their randomization

Autor: O. S. Ryzhov, Elena V. Bogdanova-Ryzhova

Publikováno v: Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences. 352:389-404

Essentially nonlinear motions generated in incompressible boundary layers by external agencies are considered. A pertinent mathematical model for the Blasius flow is furnished by the forced Benjamin-Davis-Acrivos integral-differential equation. A ste

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::727d16b81a01f3d2848cb1c81ebb50e1
https://doi.org/10.1098/rsta.1995.0078

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Interaction of a potential vortex with a local roughness on a smooth surface

Autor: O. S. Ryzhov, Sergey V. Timofeev

Publikováno v: Journal of Fluid Mechanics. 287:21-58

Disturbances generated by a potential vortex moving past a small hump or dent on the otherwise smooth flat plate are considered. Features peculiar to this problem derive from the fact that the vortex is stuck with a fixed fluid particle; hence the no

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::178d753d724531a34ca93da47eddc002
https://doi.org/10.1017/s002211209500084x

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On the nature of singularities inherent, under a given analytic distribution of the external pressure, in solutions of the prandtl equations near the point of separation

Autor: Elena V. Bogdanova-Ryzhova, O. S. Ryzhov

Publikováno v: Theoretical and Computational Fluid Dynamics. 6:193-212

A comprehensive analysis of a classical two-dimensional boundary layer is developed with the aim of revealing possible types of singularities related to separation. According to the basic assumption, the limit flow regime with a singular point of van

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cadb0779ef172c2e23e289e6f4bc5c2f
https://doi.org/10.1007/bf00417920

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Formation of solitons in transitional boundary layers: theory and experiment

Autor: O. S. Ryzhov, Y. S. Kachanov, F. T. Smith

Publikováno v: Journal of Fluid Mechanics. 251:273-297

This work brings together experimental and theoretical studies of nonlinear stages aimed at the K-regime in boundary-layer transition, and some combined theoretical and experimental results are discussed. It is shown that the initial stages in the fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c375aab0b452c8965dc77a52f1f99fea
https://doi.org/10.1017/s0022112093003416

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