A Lagrangian approach for vorticity intensification in swirling rings |
| |
Authors: | C M Casciola R Piva |
| |
Affiliation: | (1) Dipartimento di Meccanica e Aeronautica, Università di Roma “La Sapienza”, via Eudossiana 18, I-00184 Roma, Italy e-mail: piva@dma.ing.uniroma1.it, IT |
| |
Abstract: | The Lagrangian approach, adopted in vortex methods for incompressible Euler flows, is reconsidered here as the most appropriate
technique to track the dynamical evolution of organized vorticity structures in free space.
We analyze in this paper a specific initial condition, the swirling ring with azimuthal perturbations, from which originate
vortex dynamics events leading to a localized but strong vorticity intensification. The aim is to understand the possible
development of a finite time singularity, in the context of inviscid flows, and its relevance for the study of intermittency,
as one of the most challenging aspects of turbulence. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|