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3D Euler Methods for Multibladed Rotors in Hover and Forward Flight.

Pahlke, K. and Raddatz, J. (1993) 3D Euler Methods for Multibladed Rotors in Hover and Forward Flight. In: Proc. 19th European Rotorcraft Forum, 14.-16.9.1993, Cernobbio (Como), Italien..

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Abstract

The flowfield of a hovering rotor is calculated solving the Euler equations formulated in terms of the absolute flow variables in a blade attached coordinate system. Results for two hover cases with multibladed rotors have been presented, which show a good agreement between calculation and experiment. Due to the implementation of a multi-grid technique the computing times for hover calculations could be reduced considerably. The change of the discretization scheme form a cell centered to a cell vertex scheme shows advantages in the accuracy of the results, if the same computational grids were used. On the other hand a further convergence acceleration can be obtained, because coarser grids can be used without losses of accuracy. A time-accurate 3D Euler method for rotors in forward flight has been developed. Results for two non-lifting and three lifting forward flight cases have been presented. The agreement between.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1996, pages=12,
Title:3D Euler Methods for Multibladed Rotors in Hover and Forward Flight.
Authors:
AuthorsInstitution or Email of Authors
Pahlke, K.UNSPECIFIED
Raddatz, J.UNSPECIFIED
Date:1993
Journal or Publication Title:Proc. 19th European Rotorcraft Forum, 14.-16.9.1993, Cernobbio (Como), Italien.
Status:Published
Keywords:Instationäre Strömungen, Rotorumströmungen, Rotor im Vorwärtsflug mit Auftrieb, Rotor im Schwebeflug, Abwindmodell, Euler-Gleichungen..
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):L - The Quiet and Comfortable Rotorcraft
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Entwurfsaerodynamik
Deposited By: elib DLR-Beauftragter
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:06

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