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Progress in Weak Fluid-Structure-Coupling for Multibladed Rotors in High-Speed forward Flight

Pahlke, K. and van der Wall, Berend G. (2002) Progress in Weak Fluid-Structure-Coupling for Multibladed Rotors in High-Speed forward Flight. In: 28th European Rotorcraft Forum Proceedings, 67.1-67.13. 28th European Rotorcraft Forum, Bristol (uk), 17-20 September 2002.

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Progress in coupling the DLR rotor simulation code S4 and the DLR Navier-Stokes solver FLOWer following a weak coupling approach is reported. The method allows to produce trimmed CFD solutions for rotors in high-speed forward flight with inclusion of elastic blade deformations and viscous effects. The weak coupling procedure is applied to high-speed forward flight test cases of the 7A and the 7AD rotor. Isolated blade computations are carried out for both rotors while the full 4-bladed rotor is simulated only in the 7A case using the chimera approach. The weak coupling which includes the transfer of normal forces, tangential forces and pitching moments from the CFD code to the rotor simulation code improved the agreement with the existing experimental data compared to the uncoupled computations considerably. The performance difference between the 7A and the 7AD rotor in high-speed forward flight is well predicted.

Item URL in elib:https://elib.dlr.de/12461/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2002,
Title:Progress in Weak Fluid-Structure-Coupling for Multibladed Rotors in High-Speed forward Flight
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
van der Wall, Berend G.Institut für FlugsystemtechnikUNSPECIFIED
Journal or Publication Title:28th European Rotorcraft Forum Proceedings
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:67.1-67.13
Keywords:Isolated rotor, forward flight, elastic blades, fluid-structure coupling, viscous flows, Navier-Stokes equations
Event Title:28th European Rotorcraft Forum, Bristol (uk), 17-20 September 2002
Organizer:Royal Aeronautical Society
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: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Institute of Flight Systems
Deposited By: DLR-Beauftragter, elib
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:01

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