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Generation and control of tracer particles for optical flow investigations in air

Kähler, Christian and Sammler, Bernd and Kompenhans, Jürgen (2002) Generation and control of tracer particles for optical flow investigations in air. Experiments in Fluids, 33 (6), pp. 736-742.

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Abstract

The production of monodisperse tracer particles with suitable properties for optical flow investigations, such as small size, spherical shape, smooth surface, appropriate density and diffraction index, non-evaporating and agglomerating, electrically neutral, non-toxic and easily removable, is a challenging task. It is shown that high concentrations of narrow band particle size distributions, with a mean diameter below 1 µm, can easily be generated by means of multi-hole nozzles under overcritical pressure conditions. In particular, it is shown that existing explanations of the importance of certain design features of the Laskin nozzle are of minor importance for the generation of appropriate tracer tracer particles.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=2003,
Title:Generation and control of tracer particles for optical flow investigations in air
Authors:
AuthorsInstitution or Email of Authors
Kähler, ChristianUNSPECIFIED
Sammler, BerndUNSPECIFIED
Kompenhans, JürgenUNSPECIFIED
Date:2002
Journal or Publication Title:Experiments in Fluids
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:33
Page Range:pp. 736-742
Status:Published
Keywords:Optical fluid measurement technique, PIV, generation of tracer particles
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: elib DLR-Beauftragter
Deposited On:07 Dec 2005
Last Modified:14 Jan 2010 19:13

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