A cross-comparison and verification of state-of-the-art European codes describing gradient-driven plasma turbulence in the core and edge regions of tokamaks, carried out within the EFDA Task Force on Integrated Tokamak Modelling, is presented. In the case of core ion temperature gradient (ITG) driven turbulence with adiabatic electrons (neglecting trapped particles), good/reasonable agreement is found between various gyrokinetic/gyrofluid codes. The main physical reasons for some deviations observed in nonlocal simulations are discussed. The edge simulations agree very well on collisionality scaling and acceptably well on beta scaling (below the MHD boundary) for cold-ion cases, also in terms of the non-linear mode structure.
本摘要介绍了在托卡马克芯部和边缘区域中，描述梯度驱动湍流的欧洲最新代码的交叉比较与验证工作，该工作是在欧洲综合托卡马克建模工作组（EFTA）框架下开展的。对于芯部离子温度梯度（ITG）驱动湍流且电子为绝热（忽略俘获粒子）的情况，多种回旋动理学/回旋流体代码之间取得了良好或合理的一致性。本文讨论了在非局域模拟中观察到的一些偏差的主要物理原因。对于边缘区域，在冷离子情形下，各代码在碰撞率标度方面吻合得很好，在β标度方面（低于MHD边界）也吻合得较好，并且非线性模结构也一致。