51 citations · 110 across the 4 of their papers we have counts for
3 papers · 1 filter
Point-source scalar turbulence
Antonio Celani, Marco Martins Afonso, Andrea Mazzino
The statistics of a passive scalar randomly emitted from a point source is investigated analytically. Our attention has been focused on the two-point equal-time scalar correlation…
Shear effects on passive scalar spectra
A. Celani, M. Cencini, M. Vergassola +2
The effects of a large-scale shear on the energy spectrum of a passively advected scalar field are investigated. The shear is superimposed on a turbulent isotropic flow, yielding a…
Large-Eddy Simulation closures of passive scalar turbulence: a systematic approach
M. Martins Afonso, A. Celani, R. Festa +1
The issue of the parameterization of small scale (``subgrid'') turbulence is addressed in the context of passive scalar transport. We focus on the Kraichnan advection model which l…