arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1409.3091physics.plasm-ph
收藏

全球$δf$陀螺动力学模拟的两种不同方法的等价性

Equivalence of two different approaches to global $δf$ gyrokinetic simulations

Felix I. Parra, Michael Barnes

摘要:

导出了一组包含密度梯度、温度梯度和旋转梯度空间变化对湍流影响的磁通管回旋运动方程。这组新方程使用周期性边界条件。在限制$l_\bot/L \ll 1$,其中$l_\bot$是湍流结构的特征垂直长度和$L$是该设备的特征尺寸,这套新的通量管gyrokinetic方程被证明是相当于传统的全球$δf$ gyrokinetic方程的顺序更高的$l_\bot/L$比通常的通量管配方。

英文摘要:

A set of flux tube gyrokinetic equations that includes the effect of the spatial variation of the density, temperature and rotation gradients on the turbulence is derived. This new set of equations uses periodic boundary conditions. In the limit $l_\bot/L \ll 1$, where $l_\bot$ is the characteristic perpendicular length of turbulent structures and $L$ is the characteristic size of the device, this new set of flux tube gyrokinetic equations is shown to be equivalent to the traditional global $δf$ gyrokinetic equations to an order higher in $l_\bot/L$ than the usual flux tube formulations.

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。

↑