The effect of resonant magnetic perturbation (RMP) with different poloidal mode numbers on peeling–ballooning (P–B) modes is simulated with the BOUT++ code. In order to investigate the physical mechanism of edge-localized mode mitigated by RMP, a series of RMPs with different poloidal mode numbers are applied into the four-field P–B mode simulation module separately. The results indicate that RMP has a better reducing effect on the energy loss from the pedestal when the resonant position is near the bottom and top of pedestal rather than near the middle. The RMP could influence P–B modes through the following effects: on the one hand, the E × B shearing rate is significantly stronger when the RMP (resonant surface locates at the top of the pedestal) is added, which can suppress the radial propagation of the negative pressure perturbation and reduce energy loss from the pedestal. On the other hand, the coupling of toroidal modes in the nonlinear phase is enhanced wh...

中文翻译：

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不同倍数模态数的共振磁扰动对剥离-膨胀模态的影响

使用BOUT ++代码模拟了具有不同的极谱模式编号的共振磁扰动（RMP）对剥离-气囊（PB）模式的影响。为了研究通过RMP缓解边缘定位模式的物理机制，将具有不同极坐标模式编号的一系列RMP分别应用于四场PB模式仿真模块。结果表明，当共振位置在基座的底部和顶部附近而不是中部附近时，RMP可以更好地减少基座的能量损失。RMP可能通过以下效果影响PB模式：一方面，当添加RMP（共振表面位于基座顶部）时，E×B剪切速率显着增强，这样可以抑制负压扰动的径向传播并减少基座的能量损失。另一方面，非线性相中环形模态的耦合被增强了。