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arXiv · 0710.2462

Two-fluid model of the truncated Euler Equations

Giorgio Krstulovic·Marc-Etienne Brachet
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Abstract

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 Euler equation.

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Giorgio Krstulovic, Marc-Etienne Brachet. 2007-10-12. Two-fluid model of the truncated Euler Equations. https://doi.org/10.1016/j.physd.2007.11.008

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