Measurement of turbulence production in the cylinder separated shear-layer using event-triggered Laser-Doppler anemometry

Measurement of turbulence production in the cylinder separated shear-layer using event-triggered... In the transitional cylinder wake as well as the primary vortex street, the separated shear layer becomes unstable and sequences of small-scale vortex structures are produced intermittently. This paper describes how LDA data can be collected exclusively for these intermittent events. A real-time digital signal processing algorithm is developed in order to detect the instability of the shear layer from the characteristic hot-wire signal. Simultaneously, LDA data is selected so that the turbulence production in the unstable separated shear-layer can be derived. This trigger technique can be used for any kind of intermittent signal and measurement process. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Measurement of turbulence production in the cylinder separated shear-layer using event-triggered Laser-Doppler anemometry

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Publisher
Springer-Verlag
Copyright
Copyright © 2004 by Springer-Verlag
Subject
Engineering
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-003-0768-9
Publisher site
See Article on Publisher Site

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