N. Komerath, M.J. Smith

Rotorcraft wake modeling is still a major concern in rotorcraft design and analysis as it influences the aerodynamic, aeroacoustic, and aeroelastic behavior of the vehicle. This paper presents a comprehensive overview of rotorcraft wake modeling, in particular in the last decade, from the experimental, theoretical and computational viewpoints. Present capabilities are discussed and trends for future development are explored based on a recent Army Research Office (ARO)-sponsored Workshop in Wake Modeling held in March 2009 at the Georgia Institute of Technology, in which experts from all over the globe discussed current status and limitations, as well as future needs and trends in wake modeling. This paper summarizes this workshop and juxtaposes it with current research on-going in the area of wake experimentation and numerical modeling. Advances in computational fluid dynamics (CFD) have improved near- and mid-wake modeling capabilities, but hybrid methods that employ vortex element (VE), vorticity transport (VT) or vorticity confinement (VC) methods will be necessary for long-age (far-wake) modeling in the near-term. A new hover experiment with high-accuracy measurements that tie the blade loading, rotor performance and wake characteristics is needed for numerical model correlation and development.

35th European Rotorcraft Forum 2009,

Conference Paper

englisch

21,0 x 29,7 cm, 26 Seiten

DGLR-Bericht, 2009, 2009-03, 35th European Rotorcraft Forum 2009 - Conference Proceedings; S.1-26; 2009; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

aeroacoustics, aerodynamics, wakes, aeroelastics, rotorcrafts

Bestellbar

2009