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Article Dans Une Revue Physical Review Letters Année : 2005

Effective Dissipation and Turbulence in Spectrally Truncated Euler Flows

Résumé

A new transient regime in the relaxation towards absolute equilibrium of the conservative and time-reversible 3D Euler equation with a high-wave-number spectral truncation is characterized. Large-scale dissipative effects, caused by the thermalized modes that spontaneously appear between a transition wave number and the maximum wave number, are calculated using fluctuation dissipation relations. The large-scale dynamics is found to be similar to that of high-Reynolds number Navier-Stokes equations and thus obeys (at least approximately) Kolmogorov scaling.
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Dates et versions

hal-03786565 , version 1 (19-08-2023)

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Cyril Cichowlas, Pauline Bonaïti, Fabrice Debbasch, Marc Brachet. Effective Dissipation and Turbulence in Spectrally Truncated Euler Flows. Physical Review Letters, 2005, 95, pp.264502. ⟨10.1103/PhysRevLett.95.264502⟩. ⟨hal-03786565⟩
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