05-82 Timoteo Carletti and Alessandro Margheri
Measuring the mixing efficiency in a simple model of stirring:some analytical results and a quantitative study via Frequency Map Analysis (298K, latex) Mar 1, 05
Abstract , Paper (src), View paper (auto. generated ps), Index of related papers

Abstract. We prove the existence of invariant curves for a $T$--periodic Hamiltonian system which models a fluid stirring in a cylindrical tank, when $T$ is small and the assigned stirring protocol is piecewise constant. Furthermore, using the Numerical Analysis of the Fundamental Frequency of Laskar, we investigate numerically the break down of invariant curves as $T$ increases and we give a quantitative estimate of the efficiency of the mixing.

Files: 05-82.src( 05-82.keywords , carletti.tar.mm )