N. Varadarajan , H. Bufferand , G. Ciraolo , L. Cappelli , P. Tamain , N. Rivals , S. Sureshkumar , V. Quadri , L. de Gianni
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引用次数: 0
Abstract
The W impurity species was introduced in the multi-component edge fluid code SOLEDGE3X, in its 2D transport version. To do so, several physical ingredients have been implemented. Firstly, W gross erosion is calculated using the Garcia-Rosales formula, and W re-deposition is estimated with either a Groth–Tskhakaya formulation or a Neural Network trained on re-deposition data from a kinetic model. This fluid approach for W transport is compared with kinetic results obtained with ERO2.0 in edge and SOL domains. Moreover, as W radiates mainly in the core region, which was thus far not resolved in SOLEDGE3X, a 1D model has been implemented for the core plasma region assuming poloidal symmetry. The impact of Oxygen impurities on W content is also addressed (including in particular the impact of W oxide layers on the PFCs). A few applications of the model implementing a Deuterium plasma with Oxygen and Tungsten, taking into account the sputtering of Tungsten by Oxygen are shown.
在多组分边缘流体代码 SOLEDGE3X 的二维传输版本中引入了 W 杂质。为此，采用了几种物理成分。首先，使用 Garcia-Rosales 公式计算 W 的总侵蚀量，然后使用 Groth-Tskhakaya 公式或根据动力学模型的再沉积数据训练的神经网络估算 W 的再沉积量。这种流体 W 传输方法与ERO2.0 在边缘域和 SOL 域获得的动力学结果进行了比较。此外，由于 W 主要在核心区域辐射，而 SOLEDGE3X 迄今为止尚未解决这一问题，因此针对核心等离子体区域实施了一个假定极对称的一维模型。此外，还讨论了氧杂质对 W 含量的影响（尤其包括 W 氧化层对全氟化碳的影响）。图中显示了该模型在氘等离子体与氧和钨之间的一些应用，并考虑了氧对钨的溅射。
期刊介绍：
The open-access journal Nuclear Materials and Energy is devoted to the growing field of research for material application in the production of nuclear energy. Nuclear Materials and Energy publishes original research articles of up to 6 pages in length.
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