Tractable flux-driven temperature, density, and rotation profile evolution with the quasilinear gyrokinetic transport model QuaLiKiz
Tractable flux-driven temperature, density, and rotation profile evolution with the quasilinear gyrokinetic transport model QuaLiKiz
复制标题
使用拟线性回旋输运模型 QuaLiKiz 进行可处理的通量驱动温度、密度和旋转剖面演化
DOI：
10.1088/1361-6587/aa8aeb
复制
发表时间：
2017
影响因子：
2.2
通讯作者：
J. Contributors
中科院分区：
文献类型：
--
作者：
J. Citrin;C. Bourdelle;F. Casson;C. Angioni;N. Bonanomi;Y. Camenen;X. Garbet;L. Garzotti;T. Görler;Ö. Gürcan;F. Koechl;F. Imbeaux;O. Linder;K. V. D. Plassche;P. Strand;G. Szepesi;J. Contributors
准线性湍流输运模型是预测托卡马克堆芯等离子体分布的有效工具。他们的成功取决于当地的非线性gyrokinetic通量的再现。我们专注于准线性回旋动力学传输模型的重大进展（Bourdelle et al 2016 Plasma Phys. Control. Fusion 58 014036），其采用模态结构的近似解，以与全线性陀螺运动求解器相比显著地加快计算时间。在集成建模应用程序中优化色散关系求解算法，使通量计算比局部非线性模拟快× 10 6 − 7。这使得易于处理的模拟通量驱动的动态配置文件的演变，包括所有的传输通道：离子和电子热，主要粒子，杂质和动量。此外，LiKiz现在包括旋转和温度各向异性引起的极向不对称性对重杂质输运的影响，这对W输运应用很重要。在JETTO集成建模代码中的应用导致在10小时内使用10个CPU进行1秒的JET等离子体模拟。同时预测的核心密度，温度，和环形旋转配置文件的JET混合和基线实验，涵盖离子和电子湍流尺度。模拟成功地比较测量的配置文件，协议主要是在5%-25%的范围内，根据标准的品质因数。LiKiz现在是开源的，可以在www.qualikiz.com上找到。
Quasilinear turbulent transport models are a successful tool for prediction of core tokamak plasma profiles in many regimes. Their success hinges on the reproduction of local nonlinear gyrokinetic fluxes. We focus on significant progress in the quasilinear gyrokinetic transport model QuaLiKiz (Bourdelle et al 2016 Plasma Phys. Control. Fusion 58 014036), which employs an approximated solution of the mode structures to significantly speed up computation time compared to full linear gyrokinetic solvers. Optimisation of the dispersion relation solution algorithm within integrated modelling applications leads to flux calculations × 10 6 − 7 faster than local nonlinear simulations. This allows tractable simulation of flux-driven dynamic profile evolution including all transport channels: ion and electron heat, main particles, impurities, and momentum. Furthermore, QuaLiKiz now includes the impact of rotation and temperature anisotropy induced poloidal asymmetry on heavy impurity transport, important for W-transport applications. Application within the JETTO integrated modelling code results in 1 s of JET plasma simulation within 10 h using 10 CPUs. Simultaneous predictions of core density, temperature, and toroidal rotation profiles for both JET hybrid and baseline experiments are presented, covering both ion and electron turbulence scales. The simulations are successfully compared to measured profiles, with agreement mostly in the 5%–25% range according to standard figures of merit. QuaLiKiz is now open source and available at www.qualikiz.com.
影响因子：
2.2
作者：
F. Casson;A. Peeters;C. Angioni;Y. Camenen;W. Hornsby;A. Snodin;G. Szepesi
通讯作者：
F. Casson;A. Peeters;C. Angioni;Y. Camenen;W. Hornsby;A. Snodin;G. Szepesi
影响因子：
2.2
作者：
Colyer, G. J.;Schekochihin, A. A.;Dorland, W.
通讯作者：
Dorland, W.