Schedule Feb 8, 2000
Lagrangian Measurements in Turbulence
Eberhard Bodenschatz, (Cornell)
We are rpeorting on Lagrangian particle tracking in a high Reynolds number turbulent flow. We are using silicon strip detectors developed for the CLEO3 detector at Cornell's e+e- collider. This detector allows us to follow particles in the flow at submicron resolution at a rate of 70,000 positions per second. We report results on particle accelerations and show that the acceleration is a very intermittend quantity and that variance scales according with the predictions of Kolomogrov. Particle size effects are alos disussed. For more details go here. This work was done in collaboration with J. Alexander, A. Crawford, A. LaPorta, and G. Voth with generous support from the National Science Foundation.

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