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Computation of the Helicopter Fuselage Wake with the SST, SAS, DES and XLES Models

Le Chuiton, Frederic and D'Alascio, A. and Barakos, G. and Steijl, R. and Schwamborn, Dieter and Lüdeke, Heinrich (2008) Computation of the Helicopter Fuselage Wake with the SST, SAS, DES and XLES Models. In: Advances in Hybrid RANS-LES Modelling Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Vol.: 97. Springer-Verlag Berlin. ISBN 978-3-540-77813-4.

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Abstract

Abstract This paper presents a first industrial attempt at Eurocopter Germany to use DESlike methods to compute the wake behind a helicopter in forward flight. Three codes have been used: TAU (DLR), CFX (Ansys) and HMB (Uni. Liverpool) and four different turbulence models: standard SST and three of its unsteady extensions SAS, DES and XLES. Results for the loads, pressure distribution and skin-friction lines have been compared to each other and against wind tunnel experimental data. These more sophisticated models brought improvements over the base SST but not always markedly and consistently: the drag gets improved although the negative lift on the body departs further form the experimental value. The pressure distribution on the backdoor has been improved by one of the computation. Oil-flow visualisation results show that the mean flow in the region of the backdoor is qualitatively reasonably well captured.

Item URL in elib:https://elib.dlr.de/53130/
Document Type:Book Section
Title:Computation of the Helicopter Fuselage Wake with the SST, SAS, DES and XLES Models
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Le Chuiton, FredericEurocopter Deutschland GmbHUNSPECIFIED
D'Alascio, A.Eurocopter Deutschland GmbHUNSPECIFIED
Barakos, G.University of LiverpoolUNSPECIFIED
Steijl, R.University of LiverpoolUNSPECIFIED
Schwamborn, DieterUNSPECIFIEDUNSPECIFIED
Lüdeke, HeinrichUNSPECIFIEDUNSPECIFIED
Date:March 2008
Journal or Publication Title:Advances in Hybrid RANS-LES Modelling
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:Vol.: 97
Editors:
EditorsEmail
Peng, Shia-HuiUNSPECIFIED
Haase, WernerUNSPECIFIED
Publisher:Springer-Verlag Berlin
Series Name:Notes on Numerical Fluid Mechanics and Multidisciplinary Design
ISBN:978-3-540-77813-4
Status:Published
Keywords:DES, TAU, CFX, HMB, DLR, computation, Helicopter Fuselage Wake, Models
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 - Concepts & Integration (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Schubert, Ulrike
Deposited On:08 Jan 2009
Last Modified:22 Jan 2018 16:50

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