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Kinetic Simulation of Steady States of Ion Temperature Gradient Driven Turbulence with Weak Collisionality
http://hdl.handle.net/10655/2533
http://hdl.handle.net/10655/2533507504af-cccb-44fc-b912-75d825b22e19
名前 / ファイル | ライセンス | アクション |
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NIFS-785.pdf (480.3 kB)
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Item type | 研究報告書 / Research Paper(1) | |||||
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公開日 | 2010-02-05 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Kinetic Simulation of Steady States of Ion Temperature Gradient Driven Turbulence with Weak Collisionality | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | gyrokinetics | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | turbulence | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | transport | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | computer simulation | |||||
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 | |||||
著者 |
Watanabe, T.-H.
× Watanabe, T.-H.× Sugama, H. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Statistically steady states of the ion temperature gradient driven turbulence with weak collisionality are investigated by means of a kinetic simulation based on the gyrokinetic equations. Even if the collision frequency is much lower than characteristic ones of the turbulence, it is indispensable to realizing a steady state of perturbed distribution function delta f. In a low-collisionality limit, the low-order velocity-space moments of delta f as well as the ion heat transport flux agree with those in the quasisteady state of the collisionless turbulence. A spectral analysis of delta f in the velocity-space clarifies the transfer and dissipation processes of the entropy variable associated with fluctuations, where the phase mixing, the E B nonlinearity, and the finite collisionality are taken into account. A power-law scaling predicted by the theoretical analysis is also verified by the simulations in a subrange of the power spectrum which is free from the entropy production and the collisional dissipation. | |||||
書誌情報 |
en : Research Report NIFS-Series 発行日 2003-11-01 |
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報告書番号 | ||||||
NIFS-785 | ||||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0915-633X |