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Semi-Empirical Physics-Based Modeling of Fuselage-Rotor and Fuselage-Wake Interferences for Comprehensive Codes

van der Wall, Berend G. and Bauknecht, Andre and Jung, Sung N. and You, Young H. (2014) Semi-Empirical Physics-Based Modeling of Fuselage-Rotor and Fuselage-Wake Interferences for Comprehensive Codes. 70th Annual AHS Forum and Technology Display, 20.-22. Mai 2014, Montreal, Canada. ISSN 2167-1281.

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A semi-empirical analytical formulation of the induced velocities generated by the fuselage shell of the HART II wind tunnel model in the volume around the rotor is derived from computational fluid dynamics velocity data. The operational conditions investigated range from vertical descent, shallow descent, level flight and climb to vertical ascent and from forward to quartering flight. The analytical induced velocity model can directly be used to account for the inflow at the blade elements and also allows for analytical or numerical integration of rotor wake convection to compute the associated displacements of rotor blade tip vortices travelling downstream within this velocity field. The model’s influence on the major flow field variables around the rotor disk and the wake trajectory is demonstrated. Since the method is generic it is anticipated that the effect of any kind of fuselage can be accounted for this way and it may be used within any comprehensive code for blade element aerodynamics, within prescribed wake codes and even free-wake codes for influencing the wake convection.

Item URL in elib:https://elib.dlr.de/87937/
Document Type:Conference or Workshop Item (Speech)
Title:Semi-Empirical Physics-Based Modeling of Fuselage-Rotor and Fuselage-Wake Interferences for Comprehensive Codes
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
van der Wall, Berend G.Berend.vanderWall (at) dlr.deUNSPECIFIED
Bauknecht, Andreandre.bauknecht (at) dlr.deUNSPECIFIED
Jung, Sung N.Konkuk UniversityUNSPECIFIED
You, Young H.Konkuk UniversityUNSPECIFIED
Date:20 May 2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-13
Series Name:Conference Proceedings on CD-ROM
Keywords:Rotor-fuselage interference, interactional aerodynamics, fuselage flow, rotor simulation
Event Title:70th Annual AHS Forum and Technology Display
Event Location:Montreal, Canada
Event Type:international Conference
Event Dates:20.-22. Mai 2014
Organizer:American Helicopter Society International
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:rotorcraft
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:22 May 2014 15:12
Last Modified:22 Aug 2014 14:09

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