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Midi-Pyrénées (UMR 5572 du CNRS) , 14 avenue Belin, 31400 Toulouse, France
Corresponding author: a email@example.com
Revised: 14 September 1999
Published online: 15 January 2000
We present a generalization of the multiplicative model for velocity increments involving an affine process. The consequences on the shape of the probability distribution functions for the velocity increments are explored, and shown to be better compatible with the existence of a scale variation of the skewness.
PACS: 02.50.-r – Probability theory, stochastic processes, and statistics / 11.30.-j – Symmetry and conservation laws / 47.27.Gs – Isotropic turbulence; homogeneous turbulence / 47.27.Jv – High-Reynolds-number turbulence
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000