The first principle nonlinear gyrokinetic numerical simulation successfully reproduces the experimental observations of non-diffusive large scale avalanching events in a KSTAR MHD-quiescent L-mode plasma. Power law scaling of electron temperature fluctuation δT _e and Hurst exponent factor H from simulation and experiment are in good agreement. In addition, the simulation verifies that the global pattern of mean zonal flow is corrugated with staircase-like structure and responsible for the creased profile of δT _e, which is also observed in the experiment. We report on a novel finding that the zonal flow staircase constrains the radial extent of electron heat avalanches through shearing the electron temperature gradient fluctuation, while previous studies were mostly on ion heat transport.

第一个原理非线性陀螺动力学数值模拟成功地再现了KSTAR MHD静态L型等离子体中非扩散大规模雪崩事件的实验观察结果。电子温度波动的幂律缩放δT _Ë和Hurst指数的因素^ h从仿真和实验有较好的一致性。此外，仿真验证该平均纬向气流的全球格局是波纹与阶梯状结构和负责的折痕轮廓δT _Ë，这也在实验中观察到。我们报告了一个新发现，即纬向流动阶梯通过剪切电子温度梯度波动来限制电子热崩塌的径向范围，而先前的研究主要是关于离子传热的。