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Zero-absolute-vorticity State in a Rotating Turbulent Shear Flow
http://hdl.handle.net/10655/2901
http://hdl.handle.net/10655/2901545c0f9a-96fc-4b7c-b28a-bb932ff3057c
Item type | 研究報告書 / Research Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Zero-absolute-vorticity State in a Rotating Turbulent Shear Flow | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | zero absolute vorticity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | shear-Coriolis instability | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | analyogy with convective turbulence | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_18ws | |||||
資源タイプ | research report | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
"Tanaka, M.
× "Tanaka, M.× Kida, S.× Yanase, S.× Kawahara, G." |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "Stability characteristics of a rotating simple shear flow modulated periodically in the shear direction is investigated by direct numerical simulation. The temporal evolution and the final profile of the mean flow are examined, starting with a random perturbation imposed on it under the assumption that the velocity and pressure fields are uniform in the mean flow direction. It is found that the mean velocity profile changes due to the shear-Coriolis instability. If there is a locally unstable regionin a stable rotating simple shear, the mean velocity profile there is deformed into a linear one with nearly-zero absolute vorticity. An analogy holds between rotating uniformly sheared turbulence and thermally convective turbulence that the region of nearly-zero absolute vorticity in the former corresponds to that of nearly-uniform temperature in the latter." | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 2000-01-01 |
|||||
報告書番号 | ||||||
NIFS-623 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |