基于谱估计方法的等离子体湍流三波耦合数据处理算法  

Data processing algorithm of three-wave coupling in plasma turbulences by spectral estimation methods

作　　者：沈勇[1] 董家齐[1,2] 石中兵[1] 赵开君[1] 

机构地区：[1]核工业西南物理研究院,成都610041 [2]浙江大学聚变理论与模拟中心,杭州310013

出　　处：《核聚变与等离子体物理》2015年第3期193-197,共5页Nuclear Fusion and Plasma Physics

基　　金：国家磁约束核聚变能研究专项(2013GB111005);国家自然科学基金(11175057;11475057)

摘　　要：基于数字谱分析技术求解波耦合方程,进而计算与三波相互作用相关联的线性耦合系数和能量转移,以此开发了数据处理程序用于研究HL-2A装置等离子体边缘湍流中的非线性能量传递过程。介绍了算法设计和开发的主要思想。应用该程序对与带状流相关的一次放电的实验数据进行了数据处理研究。结果表明,带状流是由等离子体湍流的能量逆级联所驱动的。Based on the Ritz method to resolve the waves-coupling equation, the data processing code was developed to investigate the non-linear energy transfer progress in plasma edge turbulence in HL-2A tokamak. The arithmetic principle and the development methods of this code were introduced. By use of this program, the discharge data with relation to zonal flow were processed and studied. The results show that zonal flow was driven by the inverse energy cascade in the plasma turbulence.

关 键 词：谱估计方法 等离子体湍流 波耦合 能量级联 

分 类 号：TL612[核科学技术—核技术及应用]