Self-Energy Closure for Inhomogeneous Turbulent Flows and Subgrid Modeling

Entropy

关键词: inhomogeneous closures;    turbulence;    subgrid modeling;    statistical dynamics;   

DOI  :  10.3390/e14040769

来源: mdpi

【 摘 要 】

A new statistical dynamical closure theory for general inhomogeneous turbulent flows and subgrid modeling is presented. This Self-Energy (SE) closure represents all eddy interactions through nonlinear dissipation or forcing ‘self-energy’ terms in the mean-field, covariance and response function equations. This makes the renormalization of the bare dissipation and forcing, and the subgrid modeling problem, transparent. The SE closure generalizes the quasi-diagonal direct interaction closure to allow for more complex interactions. The SE closure is applicable to flows in different geometries, is exact near maximum entropy states corresponding to canonical equilibrium, and provides a framework for deriving simpler realizable closures.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.