Real-time gas cooling of flowing liquid lithium limiter for the EAST

Meng, X.C.; Huang, Ming; Li, C. L.; Sun, Zhuo; Xu, Wei; Maingi, R.; Tritz, K.; Andruczyk, Daniel; Qian, Yi; Yang, Qingxi; Yuan, Xiao-bing; Huang, Jianjun; Gao, Xingmin; Yu, Bin; Li, J. G.; Zuo, Guizhong; Hu, Jiansheng

doi:10.1016/j.fusengdes.2020.111537

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…By substituting η(t), η(t) ∝ ω ′ η(t), and η(t) ∝ ω ′2 η(t) into equation (23), the dispersion relation is determined by…”

Section: Dispersion Relationmentioning

confidence: 99%

“…The latter design adopts controlled flowing, e.g. the LiMIT system [4,5,20,21], which maintains the Li flow by electromagnetic force along guiding channels, and the FLiLi system [7,22,23], which maintains the thin laminar Li flow by electromagnetic force and gravity along guiding a plate. It appears that the controlled flowing design provides excellence heat and particle removal [7].…”

Section: Introductionmentioning

confidence: 99%

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Surface instability of static liquid metal in magnetized fusion plasma

Somboonkittichai

Zuo

2023

Nucl. Fusion

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Understanding surface instability in magnetized fusion plasma supports the appropriate implementation and handling of liquid metal as plasma facing components (PFCs) in future fusion reactors. A Lagrange equation describing a viscous liquid surface deformation in a magnetized plasma is derived using Rayleigh's method. Its solution justifies the general instability criterion and helps in characterizing the key interactions driving such instability under fusion conditions. Surface tension and gravity, especially with the poloidal angles of the lower part of a plasma chamber, mainly stabilize the liquid surface at small and large disturbance wavelengths, respectively. The sheath electric field and the external tangential magnetic field cause the liquid surface to disintegrate at an intermediate wavelength. Practically, a magnetic confinement fusion (MCF) device requires a strong magnetic field for confinement. The study suggests that such a strong field dominates the rest and governs instability. In addition, this implies that the configuration of a static planar free liquid surface is difficult to adopt as a candidate for handling the liquid metal as PFCs in next step MCF devices.

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“…By substituting η(t), η(t) ∝ ω ′ η(t), and η(t) ∝ ω ′2 η(t) into equation (23), the dispersion relation is determined by…”

Section: Dispersion Relationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Surface instability of static liquid metal in magnetized fusion plasma

Somboonkittichai

Zuo

2023

Nucl. Fusion

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“…From this previous program, the Mockup Entry module for EAST (MEME) was designed and built for UIUC to further research and develop such LM systems. It is based on the Material and Plasma Evaluation System, 26,27 which allows LM systems to enter the EAST vessel without breaking vacuum.…”

Section: Distribution and Wettingmentioning

confidence: 99%

Overview of Liquid-Metal PFC R&D at the University of Illinois Urbana-Champaign

Andruczyk

Rizkallah

O’Dea

et al. 2023

Fusion Science and Technology

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The design and implementation of future flowing liquid-lithium plasma-facing components (LLPFCs) will be dependent on several factors. Of course, one of the most important is the need to be able to deal with high heat fluxes incident on the surface of the LLPFCs, but there are also several other important liquid-metal behaviors that have been identified for their critical impact on the feasibility of a LLPFC. One of these is the ability to constantly wet 100% of the plasma-facing component area and the best way to achieve that. Another key point is knowing and understanding the erosion and corrosion of the surfaces subject to a flowing liquid-lithium system and the ability for hydrogen and helium uptake by the system.The Center for Plasma Material Interactions (CPMI) has been tasked with looking at these various issues. The Mock-up Entry module for EAST device was used to investigate wetting and erosion effects and to design a suitable distribution and collection system with a liquid-lithium loop. The vapor shielding effects of lithium on the surface were also modeled and studied. A model coupling CRANE, an open-source global reaction network solver, and Zapdos, a plasma transport solver, is being developed to better understand the dynamics of the vapor cloud. Experiments on the Magnum-PSI at the Dutch Institute for Fundamental Energy Research have been carried out to study the vapor shielding effect and obtain experimental benchmarks to verify the model. Also, initial experiments using the Hybrid Illinois Device for Research and Applications have been performed to understand the pumping effects of lithium on helium.Experiments with a drop of liquid lithium (~100 mg) into a helium plasma have shown the ability of lithium to take out the cold recycling helium gas as well as hydrogen and oxygen impurity gases. The improvement in plasma performance was significant, and further understanding of this effect will have impacts on how future LLPFCs will be designed. Further investigation into the exact mechanism for helium pumping by lithium needs to be performed in the future. This paper presents a summary of the results obtained at the CPMI.

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“…In addition, the LiMIT system, one of currently implemented feeding structures of LM, is relied on temperature gradient in LM to produce an extra force to drive LM flowing in guiding grooves [19,20]. About experimental thermal analysis, thermocouple system with numerical analysis, via ANSYS, investigating gas cooling in FLiLi has been reported in [21].…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Heat Transport in Static Liquid Metal Exposed to Plasma with Magnetic Field

Somboonkittichai

Zuo

2023

Plasma and Fusion Research

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Suitable management of excessive heat in liquid metal is one of key roles to accomplish the proper liquid metal usage as future alternative fusion plasma facing components. In this work, theoretical heat transfer in liquid metal in contact with magnetized plasma was carried out, and a numerical solver for investigating temperature and induced velocity by j × B force has been developed. The study suggests the trends: 1. lower bulk temperature in liquid metal at which magnetic field is presented, compared to no magnetic field, by additional convection from j × B, stronger than natural convection; and 2. asymmetric temperature distribution in liquid metal along j × B.

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Real-time gas cooling of flowing liquid lithium limiter for the EAST

Cited by 3 publications

References 19 publications

Surface instability of static liquid metal in magnetized fusion plasma

Surface instability of static liquid metal in magnetized fusion plasma

Overview of Liquid-Metal PFC R&D at the University of Illinois Urbana-Champaign

Numerical Study of Heat Transport in Static Liquid Metal Exposed to Plasma with Magnetic Field

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