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Evaluation of grey area mitigation tools within zonal and non-zonal RANS-LES approaches in flows with pressure induced separation

Probst, Axel and Schwamborn, Dieter and Garbaruk, Andre and Guseva, Ekaterina and Shur, Misha and Strelets, Mikhail and Travin, Andrej (2017) Evaluation of grey area mitigation tools within zonal and non-zonal RANS-LES approaches in flows with pressure induced separation. International Journal of Heat and Fluid Flow (68), pp. 237-247. Elsevier. DOI: 10.1016/j.ijheatfluidflow.2017.08.008 ISSN 0142-727X

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Official URL: https://www.journals.elsevier.com/international-journal-of-heat-and-fluid-flow

Abstract

Hybrid RANS-LES computations of the separated flow over a wall-mounted hump are presented, which employ different grey-area mitigation techniques in the framework of a structured and an unstructured flow solver. Two zonal approaches using different synthetic-turbulence generators at the RANS-LES inter- face, as well as a non-zonal approach based on a shear-layer-adapted subgrid scale are compared in detail with validation data from a wind-tunnel experiment. Irrespective of the applied flow solver, the differ- ent methods are shown to be similarly effective in reducing the grey area compared to the basic hybrid RANS-LES model, and thus provide satisfying mean-flow predictions of the pressure-induced separation.

Item URL in elib:https://elib.dlr.de/116018/
Document Type:Article
Additional Information:Contents lists available at ScienceDirect; journal homepage: www.elsevier.com/locate/ijhff; Article history: Available online 5 September 2017
Title:Evaluation of grey area mitigation tools within zonal and non-zonal RANS-LES approaches in flows with pressure induced separation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Probst, Axelaxel.probst (at) dlr.deUNSPECIFIED
Schwamborn, DieterDieter.Schwamborn (at) dlr.deUNSPECIFIED
Garbaruk, AndreSt.-Petersburg Polytechnic University & “New Technologies and Services”(NTS), St.-Petersburg, RussiaUNSPECIFIED
Guseva, EkaterinaSt.-Petersburg Polytechnic University & “New Technologies and Services”(NTS), St.-Petersburg, RussiaUNSPECIFIED
Shur, MishaSt.-Petersburg Polytechnic University & “New Technologies and Services”(NTS), St.-Petersburg, RussiaUNSPECIFIED
Strelets, MikhailSt.-Petersburg Polytechnic University & “New Technologies and Services”(NTS), St.-Petersburg, RussiaUNSPECIFIED
Travin, AndrejSt.-Petersburg Polytechnic University & “New Technologies and Services”(NTS), St.-Petersburg, RussiaUNSPECIFIED
Date:2017
Journal or Publication Title:International Journal of Heat and Fluid Flow
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1016/j.ijheatfluidflow.2017.08.008
Page Range:pp. 237-247
Publisher:Elsevier
ISSN:0142-727X
Status:Published
Keywords:Hybrid RANS-LES, Wall-bounded flows, Pressure-induced Separation, Grey-area mitigation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Deposited By: Bachmann, Barbara
Deposited On:27 Nov 2017 15:40
Last Modified:01 Nov 2019 03:00

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