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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 (2006) Micro-PIV and ELDV wind tunnel investigations of the laminar separation bubble above a helicopter blade tip. Measurement Science & Technology, 17 (7), pp. 1652-1658. Institute of Physics (IOP) Publishing. DOI: 10.1088/0957-0233/17/7/003 ISSN 0957-0233

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Official URL: https://iopscience.iop.org/article/10.1088/0957-0233/17/7/003

Abstract

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 (my)m allowed a judgment on the choice of turbulence models and damping coefficients for the improvement of CFD predictions.

Item URL in elib:https://elib.dlr.de/21654/
Document Type:Article
Title:Micro-PIV and ELDV wind tunnel investigations of the laminar separation bubble above a helicopter blade tip
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Raffel, Markusmarkus.raffel (at) dlr.dehttps://orcid.org/0000-0002-3340-9115
Favier, D.CNRSUNSPECIFIED
Berton, E.CNRSUNSPECIFIED
Rondot, C.CNRSUNSPECIFIED
Nsimba, M.CNRSUNSPECIFIED
Geissler, WolfgangWolfgang.Geissler (at) dlr.deUNSPECIFIED
Date:2006
Journal or Publication Title:Measurement Science & Technology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:17
DOI :10.1088/0957-0233/17/7/003
Page Range:pp. 1652-1658
Editors:
EditorsEmail
UNSPECIFIEDInstitute of Physics Publishing
Publisher:Institute of Physics (IOP) Publishing
ISSN:0957-0233
Status:Published
Keywords:micro-PIV, ELDV, dynamic stall, separation bubble, blade tip
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Virtual Aerodynamic Rotorcraft (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Helicopter, GO
Deposited By: Winkels, Elisabeth
Deposited On:25 Jan 2006
Last Modified:06 Sep 2019 15:21

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