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Seventh International Symposium on Turbulence and Shear Flow Phenomena
July, 28-31, 2011, Ottawa Convention Centre, Ottawa, Canada

DOI: 10.1615/TSFP7

VORTICITY STRUCTURES NEAR THE TURBULENT/NONTURBULENT INTERFACE IN A PLANAR TURBULENT JET

pages 1-6
DOI: 10.1615/TSFP7.1040
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ABSTRACT

The intense vorticity and the large vorticity structures are studied using a DNS of a turbulent planar jet. The structures are characterised in the jet regarding their radius, vorticity, tangential velocity, circulation and orientation in respect to the turbulent/nonturbulent interface. The variation of their characteristics with the distance to the Turbulent/Non-turbulent interface is also documented and their effect on this interface is described. A model is presented to explain the behaviour of the enstrophy viscous diffusion term at the Turbulent/Non-turbulent interface.

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