论文标题
Jorek3d：Jorek非线性MHD代码的扩展
JOREK3D: An extension of the JOREK nonlinear MHD code to stellarators
论文作者
论文摘要
尽管自融合研究初期以来，恒星的基本概念就已经知道了，但计算技术的进步已经使越来越复杂的设备的建模，导致Wendelstein 7-X的构建，这最近显示了有希望的结果。最近的成功使人们对恒星剂的非线性3D MHD建模产生了兴趣，以便更好地了解其性能和操作限制。本文报告了将Jorek代码扩展到3D几何形状以及对其进行的第一个恒星模拟。此处显示的第一个简单模拟使用先前衍生的MHD模型介绍了经典的Wendelstein 7-A恒星。结果表明，在还原模型中保留了稳定的全MHD平衡：通量表面不会在整个仿真过程中移动，并且与完整的MHD平衡的通量表面紧密匹配。此外，模拟了撕裂和气球模式，Jorek中测得的线性增长率与Castor3D线性MHD代码的增长率是合理的。
Although the basic concept of a stellarator was known since the early days of fusion research, advances in computational technology have enabled the modelling of increasingly complicated devices, leading up to the construction of Wendelstein 7-X, which has recently shown promising results. This recent success has revived interest in the nonlinear 3D MHD modelling of stellarators in order to better understand their performance and operational limits. This paper reports on the extension of the JOREK code to 3D geometries and on the first stellarator simulations carried out with it. The first simple simulations shown here address the classic Wendelstein 7-A stellarator using a reduced MHD model previously derived by us. The results demonstrate that stable full MHD equilibria are preserved in the reduced model: the flux surfaces do not move throughout the simulation, and closely match the flux surfaces of the full MHD equilibrium. Further, both tearing and ballooning modes were simulated, and the linear growth rates measured in JOREK are in reasonable agreement with the growth rates from the CASTOR3D linear MHD code.
