Self-Similar Subgrid-Scale Models for Inertial Range Turbulence and Accurate Measurements of Intermittency
Luca Biferale1, Fabio Bonaccorso1, Michele Buzzicotti1
1Department of Physics and INFN, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133, Rome, Italy.
Abstract:
A class of spectral subgrid models based on a self-similar and reversible closure is studied with the aim to minimize the impact of subgrid scales on the inertial range of fully developed turbulence. In this manner, we improve the scale extension where anomalous exponents are measured by roughly 1 order of magnitude when compared to direct numerical simulations or to other popular subgrid closures at the same resolution. We find a first indication that intermittency for high-order moments is not captured by many of the popular phenomenological models developed so far.
Related Concept Videos
Inertial Frames of Reference
Non-inertial Frames of Reference
Range
15.9; 16.1; 15.2; 14.8; 15.8; 15.9; 16.0; 15.5
Measurements of the amount of soda in a 16-ounce can vary since different subjects record these measurements or since the exact amount - 16 ounces of liquid, was not...
Laminar and Turbulent Flow
Turbulent Flow
pH Scale


