Role of vortical structures for enstrophy and scalar transport in flows with and without stable stratification
M. M. Neamtu-Halic,
J. -P. Mollicone,
M. van Reeuwijk
et al.
Abstract:In this paper, we investigate the enstrophy dynamics in relation to objective Eulerian coherent structures (OECSs) and their impact on the enstrophy and scalar transport near the turbulent/non-turbulent interface (TNTI) in flows with and without stable stratification. We confirm that vortex-stretching produces enstrophy inside the boundaries of the OECSs, while viscous diffusion transfers the enstrophy across the boundaries of the structures. Although often overlooked in the literature, viscous dissipation of … Show more
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