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Abstract

We agree with the results presented in the previous Comment [Phys. Rev. E 66, 038301 (2002)] concerning the equality, at any time moment, of the average Lagrangian and Eulerian velocities in two-dimensional incompressible stochastic velocity fields. We show that this statistical invariance is the effect of a complex nonlinear process that determines particle trapping and a compensatory acceleration of the nontrapped particles. We discuss the possibility of developing the decorrelation trajectory method which is able to describe the process of trapping but not the statistical acceleration.

Additional information

Authors: VLAD M, Association Euratom-MER, National Institute for Laser, Plasma and Radiation Physics, Bucharest (RO);SPINEANU F, Association Euratom-MER, National Institute for Laser, Plasma and Radiation Physics, Bucharest (RO);MISGUICH J H, Association Euratom-CEA sur la Fusion, CEA/DSM/DRFC, CEA-Cadarache, Saint-Paul-lez-Durance (FR);BALESCU R, Association Euratom-Etat Belge sur la Fusion, Université Libre de Bruxelles, Bruxelles (BE)
Bibliographic Reference: An article published in: Physical Review E, 66, 038302 (2002)
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://link.aps.org/abstract/PRE/v66/e038302
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