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The actuation boundary condition for flow control in the DLR TAU Code

Knopp, Tobias (2011) The actuation boundary condition for flow control in the DLR TAU Code. DLR-Interner Bericht. DLR-IB 224-2010 A 44, 28 S.

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Abstract

This report is dedicated to the implementation and the testing of a new boundary condition in the DLR TAU code for the simulation of synthetic jets for active flow control. The work was performed in the joint DLR-ONERA project SIMCOS (Advanced Simulation and Control of Dynamic Stall). A detailed mathematical description of the different versions of the actuation boundary condition and details of the implementation are given. The actuation boundary condition provides a method for prescribing constant-in-time and time-dependent synthetic jets in the incompressible and in the compressible flow regime. The turbulence quantities of the jet can be prescribed based on findings from experimental investigations. The synthetic jet boundary condition allows actuation via blowing, via suction and via zero net mass flux jets. The time-dependent actuation behaviour can be pulsed or harmonic. The issue of geometry modelling and mesh design is also discussed. The results show that the actuation slot should be taken into account in the CAD model. The use of hybrid universal wall functions is proposed as an approach to simplify the grid generation and to save mesh point in the region of the actuation slot. Finally the method is applied to the OA209 helicopter rotor blade at a static incidence angle beyond stall and to a harmonic pitching motion at deep stall conditions.

Item URL in elib:https://elib.dlr.de/71731/
Document Type:Monograph (DLR-Interner Bericht)
Title:The actuation boundary condition for flow control in the DLR TAU Code
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Knopp, TobiasTobias.Knopp (at) dlr.deUNSPECIFIED
Date:2011
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:28
Status:Published
Keywords:actuation, flow control, CFD, RANS modelling
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Knopp, Dr.rer.nat. Tobias
Deposited On:13 Jul 2012 12:09
Last Modified:12 Dec 2013 21:25

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