Simplification of local energy transfer theory of incompressible, isotropic, nonstationary turbulence

2004 ◽  
Vol 70 (6) ◽  
Author(s):  
R. Pandya
Keyword(s):  
Energy Transfer ◽  
Local Energy ◽  
Transfer Theory

Local energy flux and subgrid-scale statistics in three-dimensional turbulence

1998 ◽  
Vol 366 ◽  
pp. 1-31 ◽  
Author(s):  
VADIM BORUE ◽  
STEVEN A. ORSZAG
Keyword(s):  
Energy Transfer ◽  
Energy Dissipation ◽  
Energy Flux ◽  
Dissipation Rate ◽  
Three Dimensional ◽  
Energy Dissipation Rate ◽  
Inertial Range ◽  
Local Energy ◽  
Subgrid Scale ◽  
Velocity Gradients

Statistical properties of the subgrid-scale stress tensor, the local energy flux and filtered velocity gradients are analysed in numerical simulations of forced three-dimensional homogeneous turbulence. High Reynolds numbers are achieved by using hyperviscous dissipation. It is found that in the inertial range the subgrid-scale stress tensor and the local energy flux allow simple parametrization based on a tensor eddy viscosity. This parametrization underlines the role that negative skewness of filtered velocity gradients plays in the local energy transfer. It is found that the local energy flux only weakly correlates with the locally averaged energy dissipation rate. This fact reflects basic difficulties of large-eddy simulations of turbulence, namely the possibility of predicting the locally averaged energy dissipation rate through inertial-range quantities such as the local energy flux is limited. Statistical properties of subgrid-scale velocity gradients are systematically studied in an attempt to reveal the mechanism of local energy transfer.

Local Energy Transfer in Self-Assembled Polyelectrolyte Thin Films Probed by Near-Field Optics

Nano Letters ◽  
2001 ◽  
Vol 1 (12) ◽  
pp. 677-682 ◽  
Author(s):  
Geoffrey M. Lowman ◽  
Natalie Daoud ◽  
Ryan M. Case ◽  
Paul J. Carson ◽  
Steven K. Buratto
Keyword(s):  
Thin Films ◽  
Energy Transfer ◽  
Near Field ◽  
Local Energy ◽  
Near Field Optics ◽  
Polyelectrolyte Thin Films ◽  
Self Assembled

Nonstatistical Energy‐Transfer Theory

1966 ◽  
Vol 45 (10) ◽  
pp. 3706-3711 ◽  
Author(s):  
R. V. Serauskas ◽  
E. W. Schlag
Keyword(s):  
Energy Transfer ◽  
Transfer Theory
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