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Interaction of a moving shock wave with a turbulent boundary layer

Touré, Patrice Salif Richard and Schülein, Erich (2023) Interaction of a moving shock wave with a turbulent boundary layer. Journal of Fluid Mechanics, 964 (28), pp. 1-38. Cambridge University Press. doi: 10.1017/jfm.2023.357. ISSN 0022-1120.

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Official URL: https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/interaction-of-a-moving-shock-wave-with-a-turbulent-boundary-layer/CADDC2F6DEA313A4538DF5AAC6A1D0A7


In the present study, the influence of a uniformly moving impinging shock on the resulting shock wave–turbulent boundary layer interaction is numerically investigated. The relative Mach number of the shock front travelling above a flat-plate model varied between 0 and 2.3, while the quasi-steady inflow conditions remained constant with a Mach number of 3. To quantitatively evaluate the effect of shock travelling speed, a well-known scaling method for interaction length in quasi-steady flows was applied as a reference after significant improvements in modelling the effects of Reynolds number and wall temperature using new and existing data. Moreover, previously obtained experimental results for a limited range of travelling speeds were employed to validate the obtained numerical results. Three ranges of shock travelling speeds with distinctly different properties were extracted and quantitatively described using a developed correlation-based approach built on the extended quasi-stationary scaling law. In the first range, the scaled interaction length reaches its maximum for the given interaction strength and can be directly described by the scaling law obtained for quasi-stationary interactions. In the second travelling-speed range, the dependence of the interaction length on the interaction strength is explicitly influenced by the shock movement. With increasing shock travelling speed, the scaled interaction length here decreases significantly faster than in the quasi-stationary reference case. The end of this speed range is reached when the absolute shock front speed has caught up with the maximum speed of sound in the interaction zone, and thus the interaction length has fallen to zero. This travelling-speed limit signifies the transition to the third range, where upstream influence is no longer possible.

Item URL in elib:https://elib.dlr.de/195402/
Document Type:Article
Title:Interaction of a moving shock wave with a turbulent boundary layer
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Touré, Patrice Salif RichardUNSPECIFIEDhttps://orcid.org/0000-0002-4748-1759136421533
Schülein, ErichUNSPECIFIEDhttps://orcid.org/0000-0002-1125-8504UNSPECIFIED
Date:June 2023
Journal or Publication Title:Journal of Fluid Mechanics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-38
Publisher:Cambridge University Press
Keywords:Shock waves, Compressible boundary layers, Supersonic flow
HGF - Research field:other
HGF - Program:other
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L DT - Defense Technology
DLR - Research theme (Project):L - Effect
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > High Speed Configurations, GO
Deposited By: Toure, Patrice
Deposited On:06 Jun 2023 17:18
Last Modified:21 Sep 2023 12:46

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