Cascades, thermalization, and eddy viscosity in helical Galerkin truncated Euler flows
نویسندگان
چکیده
منابع مشابه
Galerkin-truncated dynamics of ideal fluids and superfluids: cascades, thermalization and dissipative effects
A phenomenological two-fluid model of the (time-reversible) spectrally-truncated 3D Euler equation is proposed. The thermalized small scales are first shown to be quasi-normal. The effective viscosity and thermal diffusion are then determined, using EDQNM closure and Monte-Carlo numerical computations. Finally, the model is validated by comparing its dynamics with that of the original truncated...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2009
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.79.056304