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Improved Two-Dimensional Dynamic Stall Prediction with Structured and Hybrid Numerical Methods

Richter, Kai and Le Pape, Arnaud and Knopp, Tobias and Costes, Michel and Gleize, Vincent and Gardner, Anthony Donald (2011) Improved Two-Dimensional Dynamic Stall Prediction with Structured and Hybrid Numerical Methods. Journal of the American Helicopter Society, 56 (04), 042001-042012. American Helicopter Society. DOI: 10.4050/JAHS.56.042007 ISSN 0002-8711

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Official URL: http://dx.doi.org/10.4050/JAHS.56.042007


A joint comprehensive validation activity on the structured numerical method elsA and the hybrid numerical method TAU was conducted with respect to dynamic stall applications. In order to improve two-dimensional prediction, the influence of several factors on the dynamic stall prediction were investigated. The validation was performed for three deep dynamic stall test cases of the rotor blade airfoil OA209 against experimental data from two-dimensional pitching airfoil experiments, covering low speed and high speed conditions. The requirements for spatial discretization and for temporal resolution in elsA and TAU are shown. The impact of turbulence modeling is discussed for a variety of turbulence models ranging from one-equation Spalart-Allmaras-type models to state-of-the-art seven-equation Reynolds stress models. The influence of the prediction of laminar/turbulent boundary layer transition on the numerical dynamic stall simulation is described. Results of both numerical methods are compared to allow conclusions to be drawn with respect to an improved prediction of dynamic stall.

Item URL in elib:https://elib.dlr.de/71270/
Document Type:Article
Additional Information:Paper: 042007
Title:Improved Two-Dimensional Dynamic Stall Prediction with Structured and Hybrid Numerical Methods
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Richter, Kaikai.richter (at) dlr.deUNSPECIFIED
Knopp, Tobiastobias.knopp (at) dlr.deUNSPECIFIED
Gardner, Anthony Donaldtony.gardner (at) dlr.deUNSPECIFIED
Date:18 October 2011
Journal or Publication Title:Journal of the American Helicopter Society
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.4050/JAHS.56.042007
Page Range:042001-042012
Publisher:American Helicopter Society
Keywords:dynamic stall, SIMCOS project, TAU, elsA, code validation, grid characteristics, turbulence modeling, transition prediction
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Richter, Kai
Deposited On:14 Dec 2011 10:22
Last Modified:08 Mar 2018 18:45

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