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A CFD BENCHMARK FOR FLOW SEPARATION CONTROL APPLICATION

Ciobaca, Vlad und Dandois, Julien und Bieler, Heribert (2012) A CFD BENCHMARK FOR FLOW SEPARATION CONTROL APPLICATION.

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Offizielle URL: http://eccomas2012.conf.tuwien.ac.at/

Kurzfassung

This contribution describes numerical studies conducted for one promising active flow control (AFC) technology for high-lift configurations, namely the pulsed blowing through slots. The selected configuration is a 2D high-lift airfoil, known as DLR-F15, and represents the state of the art for transonic turbulent airfoil for modern civil transport aircraft. The slot-actuators are applied on the suction side of the trailing edge flap to prevent local flow separation. The studies are addressed to evaluate the feasibility of unsteady RANS simulations to reproduce the trends discovered in experiments. Within the European framework of JTI-Clean Sky numerical and experimental studies for low speed AFC are addressed. This AFC technique is among other flow control studies a focus of this project. Within this framework, a computational study was performed at ONERA and DLR for verifying their standard approaches for AFC with available time-averaged experimental data and performing a direct comparison of computed flow unsteadiness and its implications. The time-averaged results for moderate angles of attack show that the numerical predictions are in good agreement with the experiment and in between each other. More, the results are in good agreement for the cases with AFC as well as for the baseline configuration. The computational effort is high because at least 50 actuation cycles have to be simulated, including the prediction of laminar to turbulent boundary layer transition on the trailing edge flap, before the results become ergodic. Concerning the characteristics of the flow unsteadiness, the elsA and the TAU results are in good accordance with each other.

elib-URL des Eintrags:https://elib.dlr.de/78072/
Dokumentart:Tagungsband
Titel:A CFD BENCHMARK FOR FLOW SEPARATION CONTROL APPLICATION
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Ciobaca, Vladvlad.ciobaca (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Dandois, Julienjulien.dandois (at) onera.frNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Bieler, Heribertheribert.bieler (at) airbus.comNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2012
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:active flow control, pulsed blowing, high-lift, unsteady, URANS, validation, numerical simulation.
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Simulation & Validierung (alt)
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Transportflugzeuge
Hinterlegt von: Ciobaca, Vlad
Hinterlegt am:21 Nov 2012 08:45
Letzte Änderung:24 Apr 2024 19:44

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