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Dynamical Model of Pressure-Gradient-Driven Turbulence and Shear Flow Generation in L-H Transition
http://hdl.handle.net/10655/3139
http://hdl.handle.net/10655/3139f275622e-bb47-4dc8-8fe0-c4dd1900307e
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 | Dynamical Model of Pressure-Gradient-Driven Turbulence and Shear Flow Generation in L-H Transition | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | pressure-gradient-driven turbulence | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | shear flow | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | L-H transition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Reynolds stress | |||||
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 |
"Sugama, H.
× "Sugama, H.× Horton, W." |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | "We present a dynamical model for the L-H transition consisting of three ordinary differential equations. This model describes temporal evolutions of three characteristic variables, i.e., the free energy contained in the pressure gradient, the turbulent kinetic energy and the shear flow energy in the resistive pressure-gradient-driven turbulence. The model equations have stationary solutions corresponding to the L and H-modes and their stabilities depend on the energy input to the peripheral region. Changing the energy input parameter yields the L to H and H to L transitions. We also find the parameter region in which the H-mode stationary solution becomes unstable and bifurcate to the limit cycle which shows periodic oscillations like ELM. It depends on the viscosity for the shear flow which the type of the L-H transition is, a first-order of second-order transition." | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 1994-08-01 |
|||||
報告書番号 | ||||||
NIFS-300 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |