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Analysis of PDFs for energy transfer rates from 40963 DNS – verification of the scaling relation within MPDFT
http://hdl.handle.net/2241/117041
http://hdl.handle.net/2241/117041f4710a82-bf31-4cfc-b94a-1256a521227d
名前 / ファイル | ライセンス | アクション |
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JOT_12.pdf (2.0 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2012-05-22 | |||||
タイトル | ||||||
タイトル | Analysis of PDFs for energy transfer rates from 40963 DNS – verification of the scaling relation within MPDFT | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Arimitsu, T.
× Arimitsu, T.× Arimitsu, N. |
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著者別名 |
有光, 敏彦
× 有光, 敏彦 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The probability density functions (PDFs) for energy transfer rates, extracted by Kaneda and Ishihara from their 40963 direct numerical simulation for fully developed turbulence, are analyzed in high accuracy by means of the multifractal probability density function theory (MPDFT), in which a new scaling relation has been proposed. MPDFT is a statistical mechanical ensemble theory for the intermittent phenomena providing fat-tail PDFs. With the proposed scaling relation, MPDFT has been improved to deal with intermittency through any series of PDFs with arbitrary magnification δ (>1). As the value of δ can be determined freely by observers, the choice of δ should not affect observables. The validity of the generalized MPDFT is successfully verified through the precise analyses of several series of PDFs with different values of δ. In addition to the verification, it is revealed that the system of fully developed turbulence has much wider area representing scaling behaviors than the inertial range. With the help of MPDFT, it has become possible to separate the coherent turbulent motion from fluctuations, which may benefit the wavelet analysis of turbulence. | |||||
書誌情報 |
Journal of turbulence 巻 12, p. 1-25, 発行日 2010-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1468-5248 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11584000 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1080/14685248.2010.524221 | |||||
権利 | ||||||
権利情報 | This is a preprint of an article submitted for consideration in the Journal of turbulence 2011©Taylor & Francis; Journal of turbulence is available online at: http://www.tandfonline.com/ with the open URL of your article. | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | Taylor & Francis | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2241/117041 | |||||
識別子タイプ | HDL |