TY - GEN
T1 - Near-wall measurements of turbulence statistics with laser Doppler velocity profile and field sensors
AU - Shirai, Katsuaki
AU - Bayer, Christian
AU - Voigt, Andreas
AU - Pfister, Thorsten
AU - Büttner, Lars
AU - Czarske, Jürgen
PY - 2007
Y1 - 2007
N2 - We report on the near-wall turbulence statistics of the streamwise velocity in a fully developed channel flow. The measurement was conducted with two systems of laser Doppler velocity profile sensor at three different Reynolds numbers. Since the sensor provides both the velocity and position of individual tracer particles inside the measurement volume without being mechanically traversed, a high spatially resolved velocity measurement is achieved. The resulting turbulence statistics show a good agreement with available data of direct numerical simulations up to the fourth order moments. This demonstrates the velocity profile sensor to be one of the promising techniques for turbulent flow research with the advantage of a spatial resolution more than one order of magnitude higher than a conventional laser Doppler technique. The results qualifies the two profile sensors to build up a velocity field sensor, capable of measuring velocity distribution within a two-dimensional area without using a camera.
AB - We report on the near-wall turbulence statistics of the streamwise velocity in a fully developed channel flow. The measurement was conducted with two systems of laser Doppler velocity profile sensor at three different Reynolds numbers. Since the sensor provides both the velocity and position of individual tracer particles inside the measurement volume without being mechanically traversed, a high spatially resolved velocity measurement is achieved. The resulting turbulence statistics show a good agreement with available data of direct numerical simulations up to the fourth order moments. This demonstrates the velocity profile sensor to be one of the promising techniques for turbulent flow research with the advantage of a spatial resolution more than one order of magnitude higher than a conventional laser Doppler technique. The results qualifies the two profile sensors to build up a velocity field sensor, capable of measuring velocity distribution within a two-dimensional area without using a camera.
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U2 - 10.1007/978-3-540-72604-3_47
DO - 10.1007/978-3-540-72604-3_47
M3 - Conference contribution
AN - SCOPUS:84858766216
SN - 9783540726036
T3 - Advances in Turbulence XI - Proceedings of the 11th EUROMECH European Turbulence Conference
SP - 150
EP - 152
BT - Advances in Turbulence XI - Proceedings of the 11th EUROMECH European Turbulence Conference
PB - Springer Verlag
T2 - 11th EUROMECH European Turbulence Conference, ETC11
Y2 - 25 June 2007 through 28 June 2007
ER -