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NEW CRITERIA FOR THE EDUCTION OF THREE-DIMENSIONAL TURBULENT STRUCTURES

Lionel Larcheveque
IUSTI, UMR CNRS 6595, Universitée de Provence (Aix-Marseille I) 5 rue Enrico Fermi, F-13453 Marseille cedex 13, France

Michele Larcheveque
Institut Jean le Rond d'Alembert, UMR CNRS 7190, Université Pierre et Marie Curie (Paris VI) 4 place Jussieu, boite 162, F-75252 Paris cedex 5, France

Abstract

A new family of criteria built on geometrical considerations to educe coherent structures in turbulent flow is proposed and validated using analytic and DNS three- dimensional flowfields. The ability of these criteria to educe regions of specific dynamical behavior is also demonstrated.