Simulation of peeling-ballooning modes with pellet injection
Simulation of peeling-ballooning modes with pellet injection
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DOI：
10.1063/1.4902532
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发表时间：
2014-11
影响因子：
2.2
通讯作者：
Shengqiu Chen;J. Huang;T. Sun;Zhao Wang;Chengwei Tang
中科院分区：
文献类型：
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作者：
Shengqiu Chen;J. Huang;T. Sun;Zhao Wang;Chengwei Tang
利用BOUT++程序研究了弹丸烧蚀对剥离-气球（P-B）模演化的影响。弹丸烧蚀产生的原子能显著地改变等离子体的压强分布，从而显著地改变了等离子体的P-B模和边缘局域模的行为。本文表明，与ELM相关的能量损失大大增加，没有芯块，如果芯块是沉积在基座的顶部。相反，对于在基座区域的中间的颗粒沉积，ELM能量损失可以更少。
The influence of pellet ablation on the evolution of peeling-ballooning (P-B) modes is studied with BOUT++ code. The atoms coming from pellet ablation can significantly reshape the plasma pressure profile, so the behaviors of P-B modes and edge localized mode (ELM) are modified dramatically. This paper shows that the energy loss associated with an ELM increases substantially over that without the pellet, if the pellet is deposited at the top of the pedestal. On the contrary, for pellet deposition in the middle of the pedestal region the ELM energy loss can be less.