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Expansion of the prescribed wake code of the rotor simulation program S4 with a CFD-based model of the fuselage-induced velocity

Bauknecht, Andre and van der Wall, Berend G. (2012) Expansion of the prescribed wake code of the rotor simulation program S4 with a CFD-based model of the fuselage-induced velocity. DLR-Interner Bericht. DLR IB 111-2012/62, 24 S.

Full text not available from this repository.

Abstract

An analytical formulation of the induced velocities caused by the HART II helicopter fuselage in the vicinity of the rotor was derived from computational fluid dynamics (CFD) velocity data. The induced velocity model and an analytically integrated displacement of rotor blade tip vortices convecting downstream through this velocity field were implemented into the rotor simulation program S4 of the German Aerospace Center (DLR) in Braunschweig. Tests were conducted showing the model’s influence on the major flow field variables around the rotor disk and the wake trajectory. Comparison with another already implemented fuselage model and an isolated rotor showed that the main flow features were not altered by the HART II model. Still, some changes of flow field variables and vortex trajectories around the rotor plane were found and quantified. The validity of the newly implemented model still has to be confirmed by comparison with experimental data.

Item URL in elib:https://elib.dlr.de/77550/
Document Type:Monograph (DLR-Interner Bericht)
Title:Expansion of the prescribed wake code of the rotor simulation program S4 with a CFD-based model of the fuselage-induced velocity
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bauknecht, AndreTU BSUNSPECIFIED
van der Wall, Berend G.FT-HSUNSPECIFIED
Date:29 August 2012
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:24
Status:Published
Keywords:interactional aerodynamics, fuselage flow filed, rotor wake
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 Innovative Rotorcraft (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Flight Systems > Rotorcraft
Deposited By: van der Wall, Prof. Dr. Berend G.
Deposited On:20 Feb 2013 12:29
Last Modified:20 Feb 2013 12:29

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