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Numerical simulation of impact of supersonic molecular beam injection on edge localized modes
Plasma Science and Technology ( IF 1.6 ) Pub Date : 2020-09-29 , DOI: 10.1088/2058-6272/abb456
Yuanzhen WANG 1 , Tianyang XIA 2 , Yue LIU 1
Affiliation  

A three-field model with the impact of supersonic molecular beam injection (SMBI) based on the BOUT++ code is built to simulate edge localized modes (ELMs). Different parameters of SMBI are explored to find an optimal SMBI scenario for ELM mitigation. The linear simulations show that the growth rate of peeling-ballooning mode is reduced by SMBI. The reduction amplitude of the growth rate is increased when the amplitude or width of SMBI is increased, and when SMBI is deposited at the top, bottom and middle of the pedestal, the reduction amplitude increases successively. The nonlinear simulations show that the ELM size is reduced by SMBI. The reduction amplitude of the ELM size is increased when the amplitude or width of SMBI is increased, and when SMBI is deposited at the bottom, top and middle of the pedestal, the reduction amplitude increases successively. Surface-averaged pressure profiles and filamentary structures are analyzed when the ELMs erupt. Deep deposition of SMBI suc...

中文翻译:

超音速分子束注入对边缘局域模影响的数值模拟

建立了基于BOUT ++代码的具有超音速分子束注入(SMBI)影响的三场模型,以模拟边缘局部模式(ELM)。探索了SMBI的不同参数,以找到用于缓解ELM的最佳SMBI方案。线性模拟表明,SMBI降低了剥离-气球模式的增长率。当增加SMBI的幅度或宽度时,增长率的减小幅度增大,并且当SMBI沉积在基座的顶部,底部和中间时,减小幅度将依次增大。非线性仿真表明,SMBI可以减小ELM尺寸。当SMBI的幅度或宽度增加时,以及当SMBI沉积在基座的底部,顶部和中间时,ELM尺寸的减小幅度会增加,减小幅度连续增加。当ELM爆发时,将分析表面平均压力分布和丝状结构。SMBI成功深层沉积
更新日期:2020-09-30
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