Galerkin-truncated dynamics of ideal fluids and superfluids: cascades, thermalization and dissipative effects
Galerkin-truncated dynamics of ideal fluids and superfluids: cascades, thermalization and dissipative effects
In this thesis several different Fourier Galerkin-truncated conservative systems are studied. It is shown that, in a very general way, these systems relax toward the thermodynamic equilibrium with a small-scale thermalization that induces an effective dissipation at large scales while conserving the global invariants. The first part of this work …