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Unsteady Separated Flows on Rotor-Airfoils - Analysis and Visualization of Numerical Data -

Geißler, W. and Vollmers, H. (1992) Unsteady Separated Flows on Rotor-Airfoils - Analysis and Visualization of Numerical Data -. September 15-18, 1992, Avignon, France.

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Abstract

Unsteady viscous flows with separation may be dominant on retreating rotor blades of helicopters in forward flight. These flows are investigated by a time-accurate numerical solution of the 2d-Navier-Stokes equations on deformable meshes. Lift and moment characteristics are compared with experimental data. Compressibility effects are found to be of considerable importance with respect to the development of the dynamic stall process. Large sets of field data (i.e. pressure, density, velocities, vorticity, etc.) are available to investigate the details of the flow. Suitable visualization techniques are necessary to sufficientlyinterpret these data. Pseudo 3d-viewing of the 2d-unsteady data as well as the medium: video movie serve as effective tools for phyical interpretation and understanding of the unsteady separated flow fields.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1992, pages=12,
Title:Unsteady Separated Flows on Rotor-Airfoils - Analysis and Visualization of Numerical Data -
Authors:
AuthorsInstitution or Email of Authors
Geißler, W.UNSPECIFIED
Vollmers, H.UNSPECIFIED
Date:1992
Status:Published
Keywords:Unsteady FLows, Separated Rotor-Airfoils
Event Title:September 15-18, 1992, Avignon, France
HGF - Research field:UNSPECIFIED
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:UNSPECIFIED
DLR - Program:L DT - Drehflüglertechnologien
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Institut für Strömungsmechanik > Institut für Experimentelle Strömungsmechanik
Deposited By:INVALID USER
Deposited On:03 Apr 2006
Last Modified:27 Apr 2009 10:07

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