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Energy Spectrum in the Near Dissipation Range of High Resolution Direct Numerical Simulation of Turbulence
https://nied-repo.bosai.go.jp/records/6398
https://nied-repo.bosai.go.jp/records/6398b0bb99a4-cb01-48ae-8e94-79e710a367f8
| 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 | Energy Spectrum in the Near Dissipation Range of High Resolution Direct Numerical Simulation of Turbulence | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| 著者 |
Ishihara Takashi
× 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 energy spectrum in the near dissipation range of turbulence is studied by analyzing 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 resolution ranging up to about 675 and 4096<SUP>3</SUP>, respectively. The spectra in the Reynolds number range fit well to the form <I>C</I>(<I>k</I>η)<SUP>α</SUP>exp(?β<I>k</I>η) in the wavenumber range 0.5\\lesssim<I>k</I>η\\lesssim1.5, where η is the Kolmogorov dissipation length scale and <I>C</I>, α and β are constants independent of <I>k</I>. The values of α and β decrease monotonically with <I>R</I><SUB>λ</SUB>, and they are consistent with the conjecture that they approach to constants as <I>R</I><SUB>λ</SUB>→∞, but the approach, especially that of β, is slow. | |||||||||||||||
| 言語 | en | |||||||||||||||
| 書誌情報 |
en : Journal of the Physical Society of Japan 巻 74, 号 5, p. 1464-1471, 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.74.1464 | |||||||||||||||
