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Laser transit velocimetry

Schodl, Richard (2005) Laser transit velocimetry. In: Springer Handbook of Experimental Fluid Mechanics Springer Verlag. 3.3.4. ISBN 978-3-540-25141-5.

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The article starts with a short overview about the history of the development of Laser Transit Velocimetry (LTV) also known as Laser Two Focus Velocimetry (L2F). The advantageous properties of LTV are explained which qualify this technique for high speed and turbomachinery flows and for near wall measurement applications. The fundamentals are then treated describing the general principal, the statistical data evaluation and the prospects of measuring turbulence statistics. Next, a state of the art LTV system is considered presenting details about the optical set up, the measurement procedure and the data processing and evaluation methods. In the second part of the article 3-component LTV techniques are treated with the main emphasis placed on the recently developed 3-component-Doppler-L2F velocimeter. In this hybrid system the L2F-principle is combined with a Doppler-frequency shift analysis by which the velocity component in the direction of the optical axis is determined. The unique measurement system is described in detail and examples of applications are presented.

Document Type:Book Section
Title:Laser transit velocimetry
AuthorsInstitution or Email of Authors
Schodl, RichardUNSPECIFIED
Journal or Publication Title:Springer Handbook of Experimental Fluid Mechanics
Refereed publication:No
In ISI Web of Science:No
Page Range:3.3.4
Tropea, CameronUNSPECIFIED
Yarin, Alexander L.UNSPECIFIED
Publisher:Springer Verlag
Keywords:laser transit velocimetry, LTA, laser two focus velocimetry, L2F, fluid flow measurement, laser-based measurement diagnostics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Propulsion Systems
DLR - Research area:Aeronautics
DLR - Program:L ER - Engine Research
DLR - Research theme (Project):L - Virtual Engine and Validation Methods
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology
Institute of Propulsion Technology > Engine Measurement Systems
Deposited By: Dr.phil. Christian Willert
Deposited On:03 Mar 2008
Last Modified:15 Jan 2010 00:49

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