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Erschienen in:
2001 | OriginalPaper | Buchkapitel
Laser-Doppler Velocimetry — Principle and Application to Turbulence Measurements
verfasst von : Andreas Eder, Bodo Durst, Martin Jordan
Erschienen in: Optical Measurements
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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The Laser-Doppler Velocimetry (LDV) is an optical measuring method which allows the determination of the velocity of a fluid with a very high temporal resolution. The velocity is measured virtually at one single point, referred to as measurement volume. Steady state as well as transient turbulent flow fields can, therefore, be investigated with a very high spatial accuracy. The measuring principle of LDV is based on the physical effect of Mie scattering (s. Chap. 7). Therefore, the flow has to be seeded with particles capable to follow the flow such that their movement reflects the motion of the flow well.