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A statistical mechanics framework for the large-scale structure of turbulent von Karman flows

Abstract : In the present paper, recent experimental results on large-scale coherent steady states observed in experimental von Karman flows are revisited from a statistical mechanics perspective. The latter is rooted on two levels of description. We first argue that the coherent steady states may be described as the equilibrium states of well-chosen lattice models, which can be used to define global properties of von Karman flows, such as their temperatures. The equilibrium description is then enlarged, in order to reinterpret a series of results about the stability of those steady states and their susceptibility to symmetry breaking, in the light of a deep analogy with the statistical theory of ferro-magnetism.
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https://hal-cea.archives-ouvertes.fr/cea-01233385
Contributor : Marianne Leriche <>
Submitted on : Wednesday, November 25, 2015 - 9:30:46 AM
Last modification on : Friday, March 27, 2020 - 3:44:30 AM

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Simon Thalabard, Brice Saint-Michel, Eric Herbert, François Daviaud, Bérengère Dubrulle. A statistical mechanics framework for the large-scale structure of turbulent von Karman flows. New Journal of Physics, Institute of Physics: Open Access Journals, 2015, 17, pp.63006. ⟨10.1088/1367-2630/17/6/063006⟩. ⟨cea-01233385⟩

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