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On gas flow effects in 3D edge transport simulations for DIII-D plasmas with resonant magnetic perturbations

机译：关于具有共振磁扰动的DIII-D等离子体的3D边缘传输模拟中的气流影响

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摘要

Pumping of neutral gas and re-fuelling in other locations (e.g. neutral beam injection or gas puffing) are key ingredients in divertor physics. However, these have not been included in previous 3D edge plasma transport simulations with the EMC3-EIRENE code. Including these effects brings the simulations closer to reality and we demonstrate that this has a significant impact on divertor parameters. In particular, we study the impact of the pumping efficiency on ITER similar shape plasmas at the DIII-D tokamak in the presence of resonant magnetic perturbations. Further, we investigate the so-called 'particle pump-out effect'. We show that in the present transport model and for given pumping and re-fuelling rates, the density at the transition to the core region decreases with increasing perturbation current and also the temperature. The striation patterns in the target particle and heat fluxes are extended into the regular scrape-off layer, which is caused by cross-field transport into a thin layer around the perturbed separatrix.
机译：在偏滤器物理学中，中性气体的泵送和在其他位置的加油（例如，中性束注入或吹气）是关键因素。但是，以前的3D边缘等离子体传输仿真中并未使用EMC3-EIRENE代码包括这些。包括这些影响使仿真更接近现实，并且我们证明了这对偏滤器参数具有重大影响。特别是，我们研究了在存在共振磁扰动的情况下，DIII-D托卡马克泵送效率对ITER相似形状等离子体的影响。此外，我们研究了所谓的“颗粒抽出效应”。我们表明，在当前的运输模型中，对于给定的泵送和加油速率，随着扰动电流和温度的增加，向核心区域过渡的密度也随之降低。目标粒子中的条纹图案和热通量扩展到规则的刮除层，这是由于交叉场传输进入扰动的皮层周围的薄层而引起的。

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  • 来源
    《Nuclear fusion》 |2012年第5期|p.054008.1-054008.8|共8页
  • 作者

    H. Frerichs; D. Reiter; O. Schmitz; D. Halting; T.E. Evans; Y. Feng;

  • 作者单位

    Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jiilich,Germany;

    Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jiilich,Germany;

    Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jiilich,Germany;

    Institute of Energy and Climate Research-Plasma Physics, Forschungszentrum Jiilich GmbH, Association EURATOM-FZJ, Partner in the Trilateral Euregio Cluster, Jiilich,Germany;

    General Atomics, San Diego, California, CA, USA;

    Max-Planck Institute for Plasma Physics, Greifswald, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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