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Spectrum of Passive Scalar at Very High Schmidt Number in Turbulence
http://hdl.handle.net/10655/00013432
http://hdl.handle.net/10655/00013432ba345484-fcd5-4c7d-96ae-7ee850c05808
名前 / ファイル | ライセンス | アクション |
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10642_PFR (1.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-08-03 | |||||
タイトル | ||||||
タイトル | Spectrum of Passive Scalar at Very High Schmidt Number in Turbulence | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | passive scalar spectrum | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | universality | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | turbulence | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | hybrid method | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | combined compact finite difference | |||||
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 | |||||
著者 |
GOTOH, Toshiyuki
× GOTOH, Toshiyuki× WATANABE, Takeshi× MIURA, Hideaki |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A hybrid code which uses the spectral method for an incompressible fluid and the combined compact finite difference method for passive scalar is developed and applied to compute the spectrum of the passive scalar variance in turbulence at very high Schmidt numbers up to 1000. The accuracy and efficiency of the hybrid code are found to be very satisfactory when compared to the full spectral computation. The scalar spectrum in the viscous-convective range by direct numerical simulation is found to obey k−1 power law and to exponentially decay in the far diffusive range, and compared to Kraichnan's spectrum. It is argued that the exponential decay of the spectrum in the far diffusive range is due to the intermittency effect of the velocity field. | |||||
書誌情報 |
Plasma and Fusion Research 巻 9, 号 Special Issue 2, p. 3401019, 発行日 2014-03-14 |
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書誌的事項 | ||||||
the 23rd International Toki Conference on Large-scale Simulation and Fusion Science | ||||||
出版者 | ||||||
出版者 | The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1880-6821 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12346675 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1585/pfr.9.3401019 | |||||
権利 | ||||||
権利情報 | (c) 2014 The Japan Society of Plasma Science and Nuclear Fusion Research | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1585/pfr.9.3401019 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
10642 |