1. Context
Jean-François PINTON is CNRS Research Director, Physics Laboratory, ENS-Lyon.
Yoann GASTEUIL is a doctoral student in the physics laboratory at ENS-Lyon.
Pascal METZ is a CNRS engineer at the ENS-Lyon physics laboratory.
Woodrow L. SHEW is a post-doctoral fellow at the National Institute for Health, Bethesda, USA.
Mathieu GIBERT is a post-doctoral fellow at the Max Planck Institute, Gottingen, Germany.
Experimental studies in fluid mechanics have long been based on Eulerian measurements, i.e. recorded by fixed sensors in the laboratory reference frame. However, in transport (mixing) problems, a more natural approach is to place oneself in the Lagrangian frame of reference, i.e. moving with the fluid particles. Experimental measurements are extremely difficult in this context. The recent development of acoustic methods...
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Bibliography
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(1) - MORDANT (N.) et coll - Measurement of Lagrangian Velocity in Fully Developed Turbulence - Phys. Rev. Lett., 87, p. 214501 (2001).
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(2) - LA PORTA (A.L.) et coll - Fluid particle accelerations in fully developed turbulence - Nature (London), 409, p. 1017 (2001).
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