Intermittency in the Joint Cascade of Energy and Helicity

2002/03/28 by Qiaoning Chen, Shiyi Chen, Gregory L. Eyink +1 · 4 citations
Earth and Planetary Sciences · Engineering · Environmental Science · Physics and Astronomy · #Fluid Dynamics and Turbulent Flows #Meteorological Phenomena and Simulations #Wind and Air Flow Studies #nlin.CD

paper · pdf · doi:10.1103/physrevlett.90.214503

arxiv created 2002/03/28 · openalex publication_date 2003/05/30 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The statistics of the energy and helicity fluxes in isotropic turbulence are studied using high resolution direct numerical simulation. The scaling exponents of the energy flux agree with those of the transverse velocity structure functions through refined similarity hypothesis, consistent with Kraichnan's prediction. The helicity flux is even more intermittent than the energy flux. Consistent with this observation, the spatial helicity-flux structures are finer than those of energy flux and more tubelike in geometry.

Citations

• Refined Similarity Hypothesis for Transverse Structure Functions in Fluid Turbulence

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