KAMRAN MOHSENI
Control and Dynamical Systems 107-81
Caltech
Pasadena, CA 91125-810O
http://green.caltech.edu/~mohseni/
mohseni@cds.caltech.edu
Abstract:
The Lagrangian-averaged Navier-Stokes equations
(LANS) are numerically evaluated as a turbulence closure. They are
derived
from a novel Lagrangian averaging procedure on the space of all
volume-preserving
maps and can be viewed as a
numerical algorithm which removes the energy
content from the small scales (smaller than some a priori
fixed spatial scale $\alpha$) using a dispersive rather than
dissipative mechanism, thus maintaining the crucial features