NDLI: Direct Numerical Simulation of the Shock Wave Boundary Layer Interaction (SWBLI)

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Direct Numerical Simulation of the Shock Wave Boundary Layer Interaction (SWBLI)

Content Provider	Semantic Scholar
Author	Saïdi, Ismaïl Ben Hassan Tenaud, Christian Fournier, G.
Copyright Year	2019
Abstract	The aim of this paper is the direct numerical simulation of the shock wave boundary layer interaction (SWBLI). For these interactions, the separation bubble bubble, as well as the subsequent re ected shock wave, are known to oscillate in a low-frequency streamwise motion. The origin of those oscillations, however still unclear, has been related either to the shedding of vortices in 24 Congrès Français de Mécanique Brest, 26 au 30 Août 2019 the mixing layer downstream of the separation, or to the turbulent structures in the incoming boundary layer. An in-house parallel (MPI) Finite-Volume DNS/LES solver base on a high order nite volume scheme with shock capturing procedure is used to study this phenomenon. As a rst step, by simulating the interaction between a laminar boundary layer and an incident shock wave, we suppress the suspected in uence of the large turbulent structures of the boundary layer on the SWBLI unsteadiness. In this con guration, no unsteadiness of the SWBLI has been observed. Only the unsteadiness of the reattachement point have been observed. This result tends to suggest the importance of the turbulent structures of the incoming boundary layer in the low frequency oscillations of the SWBLI system. A Synthetic Eddy Method that we adapted to compressible ow, have been developed to achieve this objective without prohibitive additional computational costs. The Synthetic Eddy Method is used to perform the DNS of a shock wave turbulent boundary layer interaction. This simulation allowed to observe the unsteadiness of the reattachement point but also of the separation point. The unsteadiness of the the whole SWBLI system has then been reproduced in this simulation. Mots clefs : Direct numerical simulation ; turbulent ows ; compressible ows ; shock wave boundary layer interaction ; synthetic turbulent inlet conditions
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://cfm2019.sciencesconf.org/245327/document
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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