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Multiple-Scale Turbulence and Bifurcaion
http://hdl.handle.net/10655/3045
http://hdl.handle.net/10655/3045e3f6d79d-2d39-4146-bafd-a6e3e55e1cf0
| Item type | 研究報告書 / Research Paper(1) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2010-02-05 | |||||||||||||||
| タイトル | ||||||||||||||||
| タイトル | Multiple-Scale Turbulence and Bifurcaion | |||||||||||||||
| 言語 | en | |||||||||||||||
| 言語 | ||||||||||||||||
| 言語 | eng | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | ITG mode turbulence | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | short-wave-length ITG mode | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | zonal flow | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | nonlinear simulation | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | multiple scale lengths | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | transition | |||||||||||||||
| キーワード | ||||||||||||||||
| 言語 | en | |||||||||||||||
| 主題Scheme | Other | |||||||||||||||
| 主題 | statistical theory | |||||||||||||||
| 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 |
"Yagi, M.
× "Yagi, M.
× Itoh, S.-I.
× Kawasaki, M.
× Itoh, K.
× Fukuyama, A."
|
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| 抄録 | ||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||
| 内容記述 | "In this paper, we analyze the turbulence composed of collective modes with different scale lengths. The hierarchical model for multiple-scale turbulence is developed. Nonlinear interactions between different scale length are modeled as turbulent drag, nonlinear noise and nonlinear drive and a set of Langevin equations is formulated. Using this model, a case where two driving mechanisms coexist (one for the micro mode and the other for semi-micro mode) is investigated. It is found that a new type of turbulence transition and a cusp-type catastrophe exist in some parameter regime. Numerical simulations are also performed for neighboring multiple-scale turbulence such as ion temperature gradient driven drift wave(ITG) ( kappa_y rho_i <1) and short wavelength ITG( kappa_y rho_i >1) modes in the shearless slab geometry. The cascade and inverse cascade in multiple-scale turbulence are investigated. The cascade is mainly observed ina( kappa parallel)? space. On the other hand, the cascade and the inverse cascade are observed in (kappa perp)?space. Another interesting result is that the particle flux is negative (inward pinch) due to the short wavelength ITG modes, while the ion and electron heat flux are positive, which indicates nonlinear interaction between different scale length mode might affect transport." | |||||||||||||||
| 書誌情報 |
en : Research Report NIFS-Series 発行日 2003-01-01 |
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| 報告書番号 | ||||||||||||||||
| NIFS-768 | ||||||||||||||||
| ISSN | ||||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||||
| 収録物識別子 | 0915-633X | |||||||||||||||
