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arXiv · 1912.11143

Inter-scale energy transfer in turbulence from the viewpoint of subfilter scales

J. I. Cardesa·A. Lozano-Durán
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Abstract

This brief is organized as follows. In Section 2 we introduce the filter-scale energy equations that lead to the subfilter-scale dissipation term P. We discuss the properties of the sources and sinks of kinetic energy, and identify our target features concerning an optimal inter-scale energy transfer (ISET) term. A similar analysis is performed in Section 3 for the kinetic energy associated with the subfilter velocities, and a new ISET term T is introduced. Comparisons between T and P for different flows and for various filters are offered in Section 4 and Section 5. Finally, we present our conclusions in Section 6.

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J. I. Cardesa, A. Lozano-Durán. 2019-12-25. Inter-scale energy transfer in turbulence from the viewpoint of subfilter scales. https://arxiv.org/abs/1912.11143

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