dorsal/arxiv
View SchemaDimensional Analysis and Weak Turbulence
| Authors | Colm Connaughton, Sergey Nazarenko, Alan C. Newell |
|---|---|
| Categories | |
| ArXiv ID | physics/0304077 |
| URL | https://arxiv.org/abs/physics/0304077 |
| DOI | 10.1016/S0167-2789(03)00214-8 |
Abstract
In the study of weakly turbulent wave systems possessing incomplete self-similarity it is possible to use dimensional arguments to derive the scaling exponents of the Kolmogorov-Zakharov spectra, provided the order of the resonant wave interactions responsible for nonlinear energy transfer is known. Furthermore one can easily derive conditions for the breakdown of the weak turbulence approximation. It is found that for incompletely self-similar systems dominated by three wave interactions, the weak turbulence approximation usually cannot break down at small scales. It follows that such systems cannot exhibit small scale intermittency. For systems dominated by four wave interactions, the incomplete self-similarity property implies that the scaling of the interaction coefficient depends only on the physical dimension of the system. These results are used to build a complete picture of the scaling properties of the surface wave problem where both gravity and surface tension play a role. We argue that, for large values of the energy flux, there should be two weakly turbulent scaling regions matched together via a region of strongly nonlinear turbulence.
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"abstract": "In the study of weakly turbulent wave systems possessing incomplete\nself-similarity it is possible to use dimensional arguments to derive the\nscaling exponents of the Kolmogorov-Zakharov spectra, provided the order of the\nresonant wave interactions responsible for nonlinear energy transfer is known.\nFurthermore one can easily derive conditions for the breakdown of the weak\nturbulence approximation. It is found that for incompletely self-similar\nsystems dominated by three wave interactions, the weak turbulence approximation\nusually cannot break down at small scales. It follows that such systems cannot\nexhibit small scale intermittency. For systems dominated by four wave\ninteractions, the incomplete self-similarity property implies that the scaling\nof the interaction coefficient depends only on the physical dimension of the\nsystem. These results are used to build a complete picture of the scaling\nproperties of the surface wave problem where both gravity and surface tension\nplay a role. We argue that, for large values of the energy flux, there should\nbe two weakly turbulent scaling regions matched together via a region of\nstrongly nonlinear turbulence.",
"arxiv_id": "physics/0304077",
"authors": [
"Colm Connaughton",
"Sergey Nazarenko",
"Alan C. Newell"
],
"categories": [
"physics.flu-dyn"
],
"doi": "10.1016/S0167-2789(03)00214-8",
"title": "Dimensional Analysis and Weak Turbulence",
"url": "https://arxiv.org/abs/physics/0304077"
},
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