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arXiv 1401.0107physics.plasm-ph
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从刘维定理到准线性、非线性随机和分数输运,等离子体turbulence的多尺度动力学

From Liouville's theorem to quasilinear, nonlinear stochastic, and fractional transport, a multi-scale kinetics of plasma turbulence

Shaojie Wang

摘要:

从Liouville方程出发,系统地导出了相空间多尺度输运方程。基于第一性原理提出的相空间多尺度输运方程表明,非线性随机输运是由微湍流散射引起的,而常见的准线性输运是由中尺度相干模的长程关联引起的;更有趣的是,它展示了分数输运方程的系统推导,可以提供一个新的观点-角度来理解在等离子体湍流中观察到的异常传输。多尺度动力学提出了一种通过形成非线性自组织稳定的大尺度结构来改善约束的新方法。

英文摘要:

From Liouville's equation, a phase-space multi-scale transport equation is systematically derived. The proposed phase-space multi-scale transport equation based on the first principle indicates that the nonlinear stochastic transport is due to the micro-turbulence scattering while the familiar quasilinear transport is due to the long-range correlation of the meso-scale coherent modes; and more interestingly, it demonstrates a systematic derivation of the fractional transport equation that may provide a new view-angle to understand the anomalous transport observed in plasma turbulence. The multi-scale kinetics suggests a new approach to confinement improvement through the formation of nonlinearly self-organized stable large-scale structures.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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