Neoclassical Viscosities in NCSX and QPS with Few Toroidal Periods and Low Aspect Ratios
スポンサーリンク
概要
- 論文の詳細を見る
Previously reported benchmarking examples of the analytical formulae of neoclassical viscosities were presented implicitly assuming applications in a future integrated simulation system of the Large Helical Device (LHD). Therefore, the assumed toroidal period numbers were mainly N = 10. However, in this type of calculation, an implicit (or sometimes explicit) assumption of ι/N « 1 is sometimes included. This assumption is included not only in simplified bounce-averaged drift kinetic equations for ripple diffusions, but also in the equation before the averaging for non-bounce-averaged effects determining neoclassical parallel viscosity and banana-plateau diffusions. For clarifying the applicability of the analytical methods for configurations with extremely low toroidal period numbers (required for low aspect ratios), we show recent benchmarking examples in the National Compact Stellarator Experiment (NCSX) with N = 3 and the Quasi-Poloidal Stellarator (QPS) with N = 2.
著者
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NISHIMURA Shin
National Institute for Fusion Science
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Zarnstorff Michael
Princeton Plasma Physics Laboratory
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SPONG Donald
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
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SPONG Donald
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6169, USA
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MIKKELSEN David
Princeton Plasma Physics Laboratory, Princeton University
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HIRSHMAN Steven
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6169, USA
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KU Long-Poe
Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451, USA
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MYNICK Henry
Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451, USA
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NISHIMURA Shin
National Institute for Fusion Science, 322-6 Oroshi-cho, Toki 509-5292, Japan
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