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Numerical Simulation of Flows around Helicopters at DLR and ONERA

Sides, Jacques and Pahlke, Klausdieter and Costes, Michel (2001) Numerical Simulation of Flows around Helicopters at DLR and ONERA. Aerospace Science and Technology, 5, pp. 35-53. ISSN 1270-9638

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This paper presents an overview of recent activities in CFD research conducted within cooperations between DLR and ONERA for the simulation of helicopter arerodynamics. These activities are mainly illustrated by two topics in the frame of a previous 3­ year bilateral cooperation on « Rotorcraft CFD code Development », the objective of which was the as­ sessement, comparison and further improvement of the DLR and ONERA Euler/Navier­Stokes methods for the prediction of the flow around isolated helicopter rotors. The first topic is devoted to a comparison of two different grid stategies for time­accurate inviscid computations of multibladed rotors in forward flight from the solution of Euler equations : the moving grid approach by ONERA and the overlapping grid technique by DLR. The second topic is concerned with a com­parison of respective Euler/Kirchhoff aeroacoustic methods for the prediction of High Speed Impulsive noise of rotors. For the assessment and improvement of Navier­Stokes methods for fuselage drag prediction, a comparison between DLR and ONERA Navier-­Stokes solutions achieved within the prediction phase of the ending Brite/EuRam european project « HELIFUSE » is also presented. The paper is concluded by a summary of on going DLR and ONERA research activities in the frame of the new long­term project «CHANCE » (Complete Helicopter AdvaNced Computational Environment) for the development and assessment of common french­german CFD tools for the complete helicopter accounting for trim and dynamics.

Item URL in elib:https://elib.dlr.de/19718/
Document Type:Article
Title:Numerical Simulation of Flows around Helicopters at DLR and ONERA
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Journal or Publication Title:Aerospace Science and Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 35-53
Keywords:Unsteady aerodynamics, Helicopter rotor, Helicopter fuselage, Rotor­-fuselage interaction, Hovering flight, Forward flight, Euler equations, Navier­Stokes equations, Numerical methods, Turbulence models, Chimeragrid, Movinggrid, High speed impulsive noise, Kirchhoff method
HGF - Research field:Aeronautics, Space and Transport (old)
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: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Pahlke, Dr.-Ing. Klausdieter
Deposited On:23 Nov 2005
Last Modified:27 Apr 2009 04:43

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