论文标题
在耦合漂移波和能量粒子引起的测量声模式系统中增强的孤子传播和能量转移
The enhanced soliton propagation and energy transfer in the coupled drift wave and energetic-particle-induced geodesic acoustic mode system
论文作者
论文摘要
使用完全非线性耦合的DW-EGAM两场方程进行了研究，研究了耦合漂移波（DW）和能量颗粒引起的非线性系统的演变，强调以Soliton和非线性能量转移和DW和EGAM之间的湍流扩散。 EGAM初始振幅和线性EGAM增长率的不同组合的四种情况旨在描述线性EGAM驱动器和有限的EGAM振幅对DW非线性动态演化的影响。在线性EPS驱动器的存在下，由于小径向尺度结构的产生，孤子传播得到了增强。得出了非线性系统的两个保护法，包括节能法。发现DW的能量始终降低，EGAM的能量始终增加，从而导致EGAM调节DW。
The evolution of the coupled drift wave (DW) and energetic-particle-induced geodesic acoustic mode (EGAM) nonlinear system is investigated using the fully nonlinear coupled DW-EGAM two-field equations, with emphasis on the turbulence spreading in the form of soliton and the nonlinear energy transfer between DW and EGAM. Four scenarios with different combinations of EGAM initial amplitudes and linear EGAM growth rates are designed to delineate the effects of linear EGAM drive and finite EGAM amplitude on DW nonlinear dynamic evolution. In presence of the linear EPs drive, the soliton propagation is enhanced, due to the generation of small radial scale structures. Two conservation laws of the nonlinear system are derived, including the energy conservation law. It is found that the energy of DW always decreases and that of EGAM always increases, leading to regulation of DW by EGAM.
