托卡马克等离子体转动对漂移波湍流激发带状流的影响

项目名称： 托卡马克等离子体转动对漂移波湍流激发带状流的影响

项目编号： No.11475083

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 余俊

作者单位： 南华大学

项目金额： 82万元

中文摘要： 等离子体湍流激发带状流是托卡马克约束与反常输运研究的重要课题之一，关于等离子体转动对不稳定性和非线性过程影响的研究具有重要意义。本项目拟从理论上研究托卡马克等离子体极向转动和一般等离子体转动对漂移波湍流激发低频带状流和测地声模过程的影响。分别根据参量激发理论和波动理学理论，推导出具有极向转动和一般等离子体转动的托卡马克中漂移波湍流激发低频带状流和测地声模的非线性激发方程。通过求出不同情况下的非线性激发方程的解析解，分析不同条件下的非线性过程中的极向转动效应和一般等离子体转动效应。最后对相应的非线性激发方程进行数值求解。开展这一课题对实现托卡马克聚变堆高性能稳态运行具有重要意义。

中文关键词： 磁约束；核聚变；托卡马克；等离子体；不稳定性

英文摘要： Nonlinear excitation of zonal flow by plamsa turbulence is a key issue in the studies of confinement and turbulent transport in tokamak plasmas, and the researches on the effects of the plasma roation on the instabilities and nonlinear processes are very important. In this project, the excitation of zonal flow by drift waves will be studied in tokamak plasmas with poloidal rotation and genearl plasma rotation. From the parametric excitation theory and the wave kinetic theory, the nonlinear excitation equations of the zonal flow excitation by drift wave turbulence will be derived in tokamaks with poloidal rotation and general plasma rotation, respectively. With the analytical solutions of the nonlinear excitation equations given for the two conditions, the effects of the poloidal rotation and the genearal plasma rotation will be analyzed for different cases. At last, the nonlinear excitation equations will be numerically examined. This project is of great significance to the tokamak fusion reactor with high performance and steady state operation in the future.

英文关键词： magnetic confinement;nuclear fusion;tokamak;plasma;instability