Comparisons between tokamak fueling of gas puffing and supersonic molecular beam injection in 2D simulations
Comparisons between tokamak fueling of gas puffing and supersonic molecular beam injection in 2D simulations
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DOI：
10.1063/1.4905641
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发表时间：
2015-01
影响因子：
2.2
通讯作者：
Yulin Zhou;Z. J. Wang;Xue-qiao Xu;Hui-dong Li;Hao Feng;Wei-guo Sun
中科院分区：
文献类型：
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作者：
Yulin Zhou;Z. J. Wang;Xue-qiao Xu;Hui-dong Li;Hao Feng;Wei-guo Sun
高效率和深注入的等离子体燃料加注对于满足聚变动力性能要求是非常重要的。通过大规模模拟来研究中性输运动力学和寻找改善燃料加注性能的方法是一种强有力和有效的方法。在BOUT++边界等离子体湍流程序[Z. H. Wang等人，核融合54，043019（2014）]。物理模型包括等离子体密度方程、热、动量随中性密度的沿着输运方程和动量输运方程。在极向和径向两个方向上，模拟和比较了GP和SMBI的等离子体和中性粒子的输运动力学和轮廓演化，这两个方向是完全不同的。它发现中性粒子可以穿透大约四...
Plasma fueling with high efficiency and deep injection is very important to enable fusion power performance requirements. It is a powerful and efficient way to study neutral transport dynamics and find methods of improving the fueling performance by doing large scale simulations. Two basic fueling methods, gas puffing (GP) and supersonic molecular beam injection (SMBI), are simulated and compared in realistic divertor geometry of the HL-2A tokamak with a newly developed module, named trans-neut, within the framework of BOUT++ boundary plasma turbulence code [Z. H. Wang et al., Nucl. Fusion 54, 043019 (2014)]. The physical model includes plasma density, heat and momentum transport equations along with neutral density, and momentum transport equations. Transport dynamics and profile evolutions of both plasma and neutrals are simulated and compared between GP and SMBI in both poloidal and radial directions, which are quite different from one and the other. It finds that the neutrals can penetrate about four ...