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Free flight boundary layer investigations by means of Particle Image Velocimetry

Politz, Christina and Roloff, Christoph and Philipp, Florian and Ehlers, Hauke and Schröder, Andreas and Geisler, Reinhard (2014) Free flight boundary layer investigations by means of Particle Image Velocimetry. 17th International Symposium on Application of Laser Techniques to Fluid Mechanics, 07.-10. July 2014, Lisbon, Portugal.

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Official URL: http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2014/program.asp

Abstract

A comprehensive flight test study involving an advanced flow field measurement technique, a particle sizing system as well as a conventional single‐point measurement system is herewith presented. The main objective of this campaign was the assessment of the accuracy and performance of Particle Image Velocimetry under flight test conditions. Hence, a PIV system was arranged inside a DLR research aircraft to determine the boundary layer flow close to the fuselage surface. In addition, a traversable rake with two differential pressure probes was installed close to the field of view of the two stereoscopic PIV cameras to measure the velocity in a conventional and reliable way. The seeding source for the PIV system were naturally occurring hydrometeors like cloud droplets, haze or precipitation. The behaviour of these tracer particles with varying diameters inside the examined boundary layer is to a certain extend unknown. Hence, a particle sizing system based on the Interferometric Laser Imaging for Droplet Sizing (ILIDS) technique was also introduced, designed and certified to allow a derivation of the particle dynamics during the PIV measurements.

Item URL in elib:https://elib.dlr.de/86527/
Document Type:Conference or Workshop Item (Speech)
Additional Information:Paper-Nr.: 03.11_3_132
Title:Free flight boundary layer investigations by means of Particle Image Velocimetry
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Politz, Christinachristina.politz (at) dlr.deUNSPECIFIED
Roloff, ChristophInstitute of Fluid Dynamics and Thermodynamics, Otto-von-Guericke-University Magdeburg, GermanyUNSPECIFIED
Philipp, Florianflorian.philipp (at) dlr.deUNSPECIFIED
Ehlers, Haukehauke.ehlers (at) dlr.deUNSPECIFIED
Schröder, Andreasandreas.schroeder (at) dlr.deUNSPECIFIED
Geisler, Reinhardreinhard.geisler (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-9
Series Name:Conference Proceedings online
Status:Published
Keywords:PIV, Flight Test, Differential Pressure Probe Traverse, ILIDS, Particle Sizing
Event Title:17th International Symposium on Application of Laser Techniques to Fluid Mechanics
Event Location:Lisbon, Portugal
Event Type:international Conference
Event Dates:07.-10. July 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Micknaus, Ilka
Deposited On:21 Jul 2014 17:12
Last Modified:20 Oct 2014 16:54

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