Micro-PIV and ELDV wind tunnel investigations of the laminar separation bubble above a helicopter blade tip
Raffel, Markus and Favier, D. and Berton, E. and Rondot, C. and Nsimba, M. and Geissler, Wolfgang (2005) Micro-PIV and ELDV wind tunnel investigations of the laminar separation bubble above a helicopter blade tip. Measurement, Science and Technology, pp. 1-13. Institute of Physics Publishing.
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Studies of the boundary layer profile and of the characteristics of the flow velocity distribution close to the leading edge of a helicopter blade profile were conducted using the embedded laser doppler velocimetry (ELDV) and stereo-PIV. The relatively small scales of flow structures leading to dynamic stall, motivated an additional 2C-PIV study in which the flow field has been measured with a relatively high spatial resolution. The feasibility of PIV measurements utilizing a mirror telescope in a wind tunnel has been demonstrated successfully. The spatial resolution of approximately 50 μm allowed a judgment on the choice of turbulence models and damping coefficients for the improvement of CFD predictions.
|Title:||Micro-PIV and ELDV wind tunnel investigations of the laminar separation bubble above a helicopter blade tip|
|Journal or Publication Title:||Measurement, Science and Technology|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 1-13|
|Publisher:||Institute of Physics Publishing|
|Keywords:||micro-PIV, ELDV, dynamic stall, separation bubble, blade tip|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L RR - Rotorcraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L RR - Rotorcraft Research|
|DLR - Research theme (Project):||L - The Virtual Aerodynamic Rotorcraft|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Helicopters|
Institute of Aerodynamics and Flow Technology > High Speed Configurations
|Deposited By:||Elisabeth Winkels|
|Deposited On:||25 Jan 2006|
|Last Modified:||14 Jan 2010 20:48|
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