论文标题
超长的湍流涡流，磁性拓扑和tokamaks内部传输壁垒的触发
Ultra Long Turbulent Eddies, Magnetic Topology, and the Triggering of Internal Transport Barriers in Tokamaks
论文作者
论文摘要
Tokamak等离子体的局部非线性陀螺仪模拟表明，当磁性剪切非常小时，湍流涡流可以沿磁场线延伸，以获取数百个poloidal旋转。通过准确对不同的野战线拓扑（例如低阶，几乎有理或非理性安全系数）进行建模，我们表明这种“超长”涡流的平行自我交互可以大大减少热传输。这揭示了改善限制，构成实验测试的预测的新颖策略，并阐明了对内部运输障碍的过去观察结果。
Local nonlinear gyrokinetic simulations of tokamak plasmas demonstrate that turbulent eddies can extend along magnetic field lines for hundreds of poloidal turns when the magnetic shear is very small. By accurately modeling different field line topologies (e.g. low-order, almost rational, or irrational safety factor), we show that the parallel self-interaction of such "ultra long" eddies can dramatically reduce heat transport. This reveals novel strategies to improve confinement, constitutes experimentally testable predictions, and illuminates past observations of internal transport barriers.
