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LMFL Fluid Mechanics Webinar: G. Falkovich
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LMFL Fluid Mechanics Webinar series 2021
Speaker: Gregory Falkovich
Title: Information capacity of turbulent cascades
Abstract:
The review will be given of the information-theory approach to turbulence. The main question is the following one: if the non-equilibrium state has entropy lower than equilibrium at the same energy, where this information is encoded? We consider general wave turbulence and show that its statistics cannot be close to Gaussian, that is, strictly speaking, weak turbulence does not exist. We also describe a set of resonantly interacting waves and respective shell model and describe its cascades and informational content.
Speaker: Gregory Falkovich
Title: Information capacity of turbulent cascades
Abstract:
The review will be given of the information-theory approach to turbulence. The main question is the following one: if the non-equilibrium state has entropy lower than equilibrium at the same energy, where this information is encoded? We consider general wave turbulence and show that its statistics cannot be close to Gaussian, that is, strictly speaking, weak turbulence does not exist. We also describe a set of resonantly interacting waves and respective shell model and describe its cascades and informational content.
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