Dispersed Fibers Change the Classical Energy Budget of Turbulence via Nonlocal Transfer
抄録
The backreaction of dispersed rigid fibers to turbulence is analyzed by means of a state-of-the-art fully coupled immersed boundary method. The following universal scenario is identified: turbulence at large scales looses a consistent part of its kinetic energy (via a Darcy friction term), which partially reappears at small scales where a new range of energy-containing scales does emerge. Large-scale mixing is thus depleted in favor of a new mixing mechanism arising at the smallest scales. Anchored fibers cause the same backreaction to turbulence as moving fibers of large inertia. Our results thus provide a link between two apparently separated realms: the one of porous media and the one of suspension dynamics.
source:https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.114501
収録刊行物
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- Physical Review Letters
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Physical Review Letters 125 (11), 114501-, 2020-09-08
American Physical Society
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詳細情報 詳細情報について
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- CRID
- 1051975278388809088
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- NII論文ID
- 120006900870
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- ISSN
- 00319007
- 10797114
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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