European Turbulence Conference 14

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The role of temporal coherence in small and large-scale dynamos at high Rm

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In this paper we shall describe the role of temporal coherence in determining the dynamo properties of flows with a range of spatial scales at high magnetic Reynolds number. We shall examine model problems both theoretically and numerically and describe how flows with strong temporal coherence can win out over incoherent flows. The theory can be used to construct system-scale dy- namos, similar to those found in astrophysical objects, even at high Rm


Steven Tobias    
University of Leeds
United Kingdom

Fausto Cattaneo    
University of Chicago
United States


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