2013-09-04
10:15 at HCI J 574

Prospective application of GENERIC framework to turbulence modeling

Grigory Sarnitsky

Moscow Institute of Physics and Technology

Turbulence is one of the classical examples of non-equilibrium phenomena and its full theoretical description is one of the big unsolved problems in physics. Though turbulent motion of classical fluids is a natural candidate to study within GENERIC framework, to my knowledge there is no published work on the matter. This talk discusses how GENERIC illuminates the problem of turbulence modeling within the approach of Reynolds-averaged Navier–Stokes equations. Specifically, I show how it helps in determining the physical quantities that describe turbulent flow. Importance of algebraic treatment is emphasized and the action of Reynolds coarse-graining operator on GENERIC is considered. GENERIC framework offers physically founded method to determine the primary set of equations governing turbulent flow, with a closure however yet to be found. I argue that GENERIC is to bring a substantial advance to the study of turbulence.