Seventh International Symposium on Turbulence and Shear Flow Phenomena
DOI: 10.1615/TSFP7
VORTICITY STRUCTURES NEAR THE TURBULENT/NONTURBULENT INTERFACE IN A PLANAR TURBULENT JET
pages 1-6
DOI: 10.1615/TSFP7.1040
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.