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Modelling kinetic effects on the heat exhaust in high power tokamaks

对高功率托卡马克中排热的动力学效应进行建模

基本信息

批准号：
2440958
负责人：
金额：
--
依托单位：
University of York
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2020
资助国家：
英国
起止时间：
2020 至无数据
项目状态：
未结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2440958
关键词：
Modelling kinetic effects heat exhaust

项目摘要

Following the completion of my MEng in Mechanical Engineering at Brunel University, I spent five years as a combustion computational fluid dynamics specialist in the energy industry. I have joined the CDT to fulfil my long-standing dream of switching to nuclear fusion and to contribute towards its future commercialisation. My project is titled "Modelling Kinetic Effects on the Heat Exhaust in High Power Tokamaks" and will be supervised by Dr Chris Ridgers and Dr Ben Dudson based in York. It concerns the simulations of the plasma edge - a region where the plasma exhaust is directed towards the divertor by the tokamak's magnetic fields. In more powerful reactors, this can expose the divertor to heat fluxes beyond what known materials can withstand. Minimising the heat loading to manageable levels poses several yet-unsolved challenges, and is key to ensuring performance in high power output reactors such as ITER, DEMO and STEP. Current state-of-the-art models of the plasma edge assume local thermodynamic equilibrium (LTE). This project will challenge this assumption by using new, pioneering non-LTE models, which have shown significant departures from previous results obtained for ITER. This work will explore the impact of using this new approach on furthering our understanding of plasma exhaust and divertor phenomena, with a focus on assessing strategies for mitigating divertor heat loading.

在布鲁内尔大学（Brunel University）完成机械工程学士学位后，我在能源行业担任了五年的燃烧计算流体动力学专家。我加入CDT是为了实现我长期以来的梦想，即转向核聚变，并为其未来的商业化做出贡献。我的项目名为“模拟动力效应对热排气在高功率托卡马克”，并将由博士克里斯·里奇斯和博士本·杜德森总部设在约克监督。它涉及到等离子体边缘的模拟-等离子体排气被托卡马克的磁场引导到分流器的区域。在更强大的反应堆中，这可能会使导流器暴露在超过已知材料所能承受的热通量下。将热负荷最小化到可管理的水平提出了几个尚未解决的挑战，这是确保高功率输出反应堆（如ITER、DEMO和STEP）性能的关键。当前最先进的等离子体边缘模型假设局部热力学平衡（LTE）。该项目将通过使用新的、开创性的非lte模型来挑战这一假设，这些模型与以前在ITER上获得的结果有很大的不同。这项工作将探索使用这种新方法对进一步理解等离子体排气和转向器现象的影响，重点是评估减轻转向器热负荷的策略。