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Descripción
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| Granger causality is based on the idea that if a variable helps to predict another one, then they are probably involved in a causality relationship. This technique is based on the identification of a predictive model for causality detection. The aim of this paper is to use Granger causality to study the dynamics and the energy redistribution between scales and components in wall-bounded turbulent flows. In order to apply it on flows, Granger causality is generalized for snapshot-based observations of large size using linear-model identification methods coming from model reduction. Optimized DMD, a variant of the Dynamic Mode Decomposition, is considered for building a linear model based on snapshots. This method is used to link physical events and extract physical mechanisms associated to the bursting process in the logarithmic layer of a turbulent channel flow. | |
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Internacional
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JCR del ISI
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Título de la revista
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Journal of Physics: Conference Series |
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ISSN
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1742-6596 |
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Factor de impacto JCR
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Información de impacto
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Volumen
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506 |
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DOI
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10.1088/1742-6596/506/1/012006 |
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Número de revista
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