Simulations of peeling-ballooning modes with electron cyclotron resonance heating

Simulations of peeling-ballooning modes with electron cyclotron resonance heating
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电子回旋共振加热剥离-气球模式的模拟

DOI:
10.1063/1.4948482
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发表时间:
2016-05
期刊:
影响因子:
2.2
通讯作者:
Tang C. J.
Tang C. J.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Huang J.;Chen S. Y.;Tang C. J.

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本文利用but++程序模拟了电子回旋共振加热(ECRH)的沉积功率和沉积位置对剥离-气胀(P-B)模式的影响。仿真结果表明,随着沉积位置从基座顶部向底部移动,边缘局部化模式(ELM)尺寸先减小后增大,最后又减小。对于不同沉积功率的ECRH,如果它们具有相同的功率沉积剖面峰值,则对P-B模式的影响是相似的。这些结果表明,ECRH对P-B模式的影响主要取决于ECRH引起的压力分布的变化。只要ECRH能引起足够大的压力剖面变化,ECRH就能有效地影响P-B模态的动力学。
The effects of the deposited power and deposited position of Electron Cyclotron Resonance Heating (ECRH) on Peeling-Ballooning (P-B) modes are simulated using BOUT++ code in this paper. The simulation results show that as the deposited position moves from the top to the bottom of the pedestal, the edge localized mode (ELM) size decreases first and then increases, finally decreases again. For ECRH with different deposited power, the effects on P-B modes are similar if they have the same peak value of the power deposition profile. These results show that the effects of ECRH on P-B modes are primarily determined by the change in pressure profile caused by ECRH. As long as ECRH can lead to large enough change in pressure profile, ECRH can efficiently affect the dynamics of P-B modes.
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