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Structure Function and Fractal Dissipation for an Intermittent Inviscid Dyadic Model

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2017

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Morandin, Francesco

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https://doi.org/10.1007/s00220-017-2974-y
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Communications in Mathematical Physics. 2017, 356(1), pp. 231-260. ISSN 0010-3616. eISSN 1432-0916. Available under: doi: 10.1007/s00220-017-2974-y

Zusammenfassung

We study a generalization of the original tree-indexed dyadic model by Katz and Pavlović for the turbulent energy cascade of the three-dimensional Euler equation. We allow the coefficients to vary with some restrictions, thus giving the model a realistic spatial intermittency. By introducing a forcing term on the first component, the fixed point of the dynamics is well defined and some explicit computations allow us to prove the rich multifractal structure of the solution. In particular the exponent of the structure function is concave in accordance with other theoretical and experimental models. Moreover, anomalous energy dissipation happens in a fractal set of dimension strictly less than 3.

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ISO 690BIANCHI, Luigi Amedeo, Francesco MORANDIN, 2017. Structure Function and Fractal Dissipation for an Intermittent Inviscid Dyadic Model. In: Communications in Mathematical Physics. 2017, 356(1), pp. 231-260. ISSN 0010-3616. eISSN 1432-0916. Available under: doi: 10.1007/s00220-017-2974-y
BibTex
@article{Bianchi2017-11Struc-44820,
  year={2017},
  doi={10.1007/s00220-017-2974-y},
  title={Structure Function and Fractal Dissipation for an Intermittent Inviscid Dyadic Model},
  number={1},
  volume={356},
  issn={0010-3616},
  journal={Communications in Mathematical Physics},
  pages={231--260},
  author={Bianchi, Luigi Amedeo and Morandin, Francesco}
}
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