Two-fluid model of the truncated Euler Equations

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.

References in corpus (2)

• Effective Dissipation and Turbulence in Spectrally Truncated Euler Flows
• Dynamics of spectrally truncated inviscid turbulence

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