enstrophie

CONT: Entrophie. Concept utilisé dans la simulation de la turbulence atmosphérique dite de «deux dimensions» où l'atmosphère est considérée comme un fluide bi-dimensionnel, incompressible, non visqueux, à densité constante.

CONT: The term was popularized by C. Leith and is based on the modern Greek, meaning act of turning. Enstrophy is a conservative quantity in two-dimensional inviscid flow. However, when viscosity is finite, enstrophy tends to be selectively decayed relative to more rugged integrals such as energy and angular momentum.