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Jeudi 19 février
Résumé :
The most basic characterization of large, forced-dissipative systems
is the rate at which mechanical energy is supplied by an external agency
(power). I will review the background of “power problem”, emphasizing that
in fluid mechanics the driving agency does not usually work at a controlled
rate. I will discuss two examples, namely two-dimensional turbulence and
planetary-scale ocean circulation, in which determination of the average power
is a central problem with surprising implications.
RECRUTEMENT ACCES DIRECT
Le département de physique
Fête de la Science 2018 