Dynamics of density fluctuations in a turbulent flow

Using a light scattering technique, we find that large density fluctuations in an air jet are clustered in time. A phase-space embedding allows us to propose a simple (S-shaped) manifold underlying the phase-space structure. In this context the temporal complexity naturally arises as stochastic fluc...

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Bibliographic Details
Published in:Physica. D 2005, Vol.200 (1), p.165-170
Main Authors: Yacomotti, Alejandro M., Hennequin, Pascale, Honoré, Cyrille, Raimbault, Jean-Luc, Grésillon, Dominique
Format: Article
Language:English
Subjects:
Clustering
Coherent structures
Exact sciences and technology
Light scattering
Long time correlations
Phase-space embedding
Physics
Stochastic non-linear dynamics
Turbulence
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Summary:Using a light scattering technique, we find that large density fluctuations in an air jet are clustered in time. A phase-space embedding allows us to propose a simple (S-shaped) manifold underlying the phase-space structure. In this context the temporal complexity naturally arises as stochastic fluctuations are added to the deterministic part of the model.
ISSN:0167-2789
1872-8022
DOI:10.1016/j.physd.2004.10.005