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Energy spectrum in high-resolution direct numerical simulations of turbulence
http://hdl.handle.net/2237/25700
http://hdl.handle.net/2237/25700335e6a52-826b-484e-b6f4-598291b56d6f
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
PhysRevFluids_1_082403.pdf (1.2 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2017-03-14 | |||||
| タイトル | ||||||
| タイトル | Energy spectrum in high-resolution direct numerical simulations of turbulence | |||||
| 言語 | en | |||||
| 著者 |
Ishihara, Takashi
× Ishihara, Takashi× Morishita, Koji× Yokokawa, Mitsuo× Uno, Atsuya× Kaneda, Yukio |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | © 2016 American Physical Society | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A study is made about the energy spectrum E(k) of turbulence on the basis of high-resolution direct numerical simulations (DNSs) of forced incompressible turbulence in a periodic box using a Fourier spectral method with the number of grid points and the Taylor scale Reynolds number Rλ up to 122883 and approximately 2300, respectively. The DNS data show that there is a wave-number range (approximately 5×10−3<kη<2×10−2) in which E(k) fits approximately well to Kolmogorov's k−5/3 scaling, where η is the Kolmogorov length scale. However, a close inspection shows that the exponent is a little smaller than −5/3, and E(k) in the range fits to E(k)/[⟨ε⟩2/3k−5/3]=c(kL)m, where ⟨ε⟩ is the mean energy dissipation rate per unit mass; L is the integral length scale; and m≈−0.12. The coefficient c is independent of k, but has a Rλ dependence, such as c=CRζλ, where C≈0.9 and ζ≈0.14. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1103/PhysRevFluids.1.082403 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | EISSN | |||||
| 収録物識別子 | 2469-990X | |||||
| 書誌情報 |
en : Physical Review Fluids 巻 1, p. 082403R-082403R, 発行日 2016-12-22 |
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| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | https://doi.org/10.1103/PhysRevFluids.1.082403 | |||||
| 識別子タイプ | DOI | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/25700 | |||||
| 識別子タイプ | HDL | |||||
