A Lagrangian fluctuation–dissipation relation for scalar turbulence. Part I. Flows with no bounding walls
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.567
Abstract: An exact relation is derived between scalar dissipation due to molecular diffusivity and the randomness of stochastic Lagrangian trajectories for flows without bounding walls. This ‘Lagrangian fluctuation–dissipation relation’ equates the scalar dissipation for either passive… read more here.
Keywords: scalar dissipation; dissipation; relation; dissipation relation ... See more keywords
Fluctuation-dissipation relation in accelerated frames
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DOI: 10.1103/physrevd.97.045003
Abstract: An uniformly accelerated (Rindler) observer will detect particles in the Minkowski vacuum, known as Unruh effect. The spectrum is thermal and the temperature is given by that of the Killing horizon, which is proportional to… read more here.
Keywords: accelerated frames; relation accelerated; dissipation relation; fluctuation dissipation ... See more keywords
Hydrodynamic-dissipation relation for characterizing flow stagnation.
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DOI: 10.1103/physreve.103.063204
Abstract: Hydrodynamic stagnation converts flow energy into internal energy. Here we develop a technique to directly analyze this hydrodynamic-dissipation process, which also yields a lengthscale associated with the conversion of flow energy to internal energy. We… read more here.
Keywords: stagnation; relation characterizing; dissipation relation; energy ... See more keywords
Handy fluctuation-dissipation relation to approach generic noisy systems and chaotic dynamics.
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DOI: 10.1103/physreve.104.l032101
Abstract: We introduce a general formulation of the fluctuation-dissipation relations (FDRs) holding also in far-from-equilibrium stochastic dynamics. A great advantage of this version of the FDR is that it does not require explicit knowledge of the… read more here.
Keywords: handy fluctuation; fluctuation dissipation; fluctuation; dissipation relation ... See more keywords
A Fluctuation–Dissipation Relation for the Ocean Subject to Turbulent Atmospheric Forcing
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Physical Oceanography"
DOI: 10.1175/jpo-d-17-0097.1
Abstract: AbstractThe fluctuation–dissipation relation for a turbulent fluid layer (ocean) subject to frictional forcing by a superposed lighter fluid layer (atmosphere) in local models of air–sea dynamics is established. The fluctuation–dissipation relation reflects the fact that… read more here.
Keywords: ocean; dissipation; dissipation relation; fluctuation dissipation ... See more keywords