G L Derks, E Westerhof, M van Berkel, J H Jenneskens, J T W Koenders, S Mijin, D Moulton, H Reimerdes, H Wu
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引用次数: 0
摘要
本文扩展了基于物理的一维动态刮除层(SOL)等离子体模型 DIV1D,以包括核心 SOL 和可能的第二个目标。该扩展模型在一维映射 SOLPS-ITER 模拟中进行了基准测试,以找到 DIV1D 的输入设置,使其能够描述从上游到目标的 SOL 等离子体--在场景和设备的基础上对其进行校准。基准测试表明,DIV1D 和一维绘制的 SOLPS-ITER 曲线在热通量、电子温度和电子密度方面的定量匹配度大约在 50%以内:(1)托卡马克配置变量(TCV)的气体脉冲扫描;(2)升级版兆安培球形托卡马克的单次 SOLPS-ITER 模拟;以及(3)加兴托卡马克轴对称分流器实验(AUG)的升级版轴对称分流器实验(AUG)的加热功率和气体脉冲同步扫描。校准后,DIV1D 自洽地描述了在 TCV 密度扫描中 SOL 解决方案对核心通量和外部中性气体密度的依赖关系,而在 AUG 的 DIV1D 中则使用不同的 SOL 宽度来匹配功率和密度的同步变化。通过使用有效通量扩展因子考虑跨场传输,并允许中性气体在 SOL 和相邻畴之间交换,DIV1D 能够在方案和设备基础上进行校准。
Multi-machine benchmark of the self-consistent 1D scrape-off layer model DIV1D from stagnation point to target with SOLPS-ITER
This paper extends a 1D dynamic physics-based model of the scrape-off layer (SOL) plasma, DIV1D, to include the core SOL and possibly a second target. The extended model is benchmarked on 1D mapped SOLPS-ITER simulations to find input settings for DIV1D that allow it to describe SOL plasmas from upstream to target—calibrating it on a scenario and device basis. The benchmark shows a quantitative match between DIV1D and 1D mapped SOLPS-ITER profiles for the heat flux, electron temperature, and electron density within roughly 50% on: (1) the Tokamak Configuration Variable (TCV) for a gas puff scan; (2) a single SOLPS-ITER simulation of the Upgraded Mega Ampere Spherical Tokamak; and (3) the Upgraded Axially Symmetric Divertor EXperiment in Garching Tokamak (AUG) for a simultaneous scan in heating power and gas puff. Once calibrated, DIV1D self-consistently describes dependencies of the SOL solution on core fluxes and external neutral gas densities for a density scan on TCV whereas a varying SOL width is used in DIV1D for AUG to match a simultaneous change in power and density. The ability to calibrate DIV1D on a scenario and device basis is enabled by accounting for cross field transport with an effective flux expansion factor and by allowing neutrals to be exchanged between SOL and adjacent domains.
期刊介绍:
Plasma Physics and Controlled Fusion covers all aspects of the physics of hot, highly ionised plasmas. This includes results of current experimental and theoretical research on all aspects of the physics of high-temperature plasmas and of controlled nuclear fusion, including the basic phenomena in highly-ionised gases in the laboratory, in the ionosphere and in space, in magnetic-confinement and inertial-confinement fusion as well as related diagnostic methods.
Papers with a technological emphasis, for example in such topics as plasma control, fusion technology and diagnostics, are welcomed when the plasma physics is an integral part of the paper or when the technology is unique to plasma applications or new to the field of plasma physics. Papers on dusty plasma physics are welcome when there is a clear relevance to fusion.