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Statistics of Energy Transfer in High-Resolution Direct Numerical Simulation of Turbulence in a Periodic Box
https://nied-repo.bosai.go.jp/records/6399
https://nied-repo.bosai.go.jp/records/639961dc4224-67f0-4b5b-8ea4-813011a9bd3a
| Item type | researchmap(1) | |||||||||||||||||
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| 公開日 | 2023-09-20 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| 言語 | en | |||||||||||||||||
| タイトル | Statistics of Energy Transfer in High-Resolution Direct Numerical Simulation of Turbulence in a Periodic Box | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | eng | |||||||||||||||||
| 著者 |
Aoyama Tomohiro
× Aoyama Tomohiro
× Ishihara Takashi
× Kaneda Yukio
× Yokokawa Mitsuo
× Itakura Ken’ichi
× Uno Atsuya
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Other | |||||||||||||||||
| 内容記述 | The statistics of energy transfer is studied by using the data of a series of high-resolution direct numerical simulations of incompressible homogeneous turbulence in a periodic box with the Taylor micro-scale Reynolds number <I>R</I><SUB>λ</SUB> and grid points up to approximately 1130 and 4096<SUP>3</SUP>, respectively. The data show that the energy transfer <I>T</I> across the wave number <I>k</I> is highly intermittent and the skewness <I>S</I> and flatness <I>F</I> of <I>T</I> increase with <I>k</I> approximately as <I>S</I>∝(<I>kL</I>)<SUP>α<I><SUB>S</SUB></I></SUP>, <I>F</I>∝(<I>kL</I>)<SUP>α<I><SUB>F</SUB></I></SUP> in the inertial subrange, where α<I><SUB>S</SUB></I>?2?3, α<I><SUB>F</SUB></I>?1 and <I>L</I> the characteristic length scale of energy containing eddies. The comparison between the statistics of <I>T</I>, the energy dissipation rate ε and its average ε<I><SUB>r</SUB></I> over a domain of scale <I>r</I> shows that <I>T</I> is less intermittent than ε, while there is a certain similarity between the probability distribution functions of <I>T</I> and ε<I><SUB>r</SUB></I>. | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 書誌情報 |
en : Journal of the Physical Society of Japan 巻 74, 号 12, p. 3202-3212, 発行日 2005 |
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| 言語 | en | |||||||||||||||||
| 出版者 | THE PHYSICAL SOCIETY OF JAPAN | |||||||||||||||||
| ISSN | ||||||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||||||
| 収録物識別子 | 1347-4073 | |||||||||||||||||
| DOI | ||||||||||||||||||
| 関連識別子 | 10.1143/jpsj.74.3202 | |||||||||||||||||
