Exploratory studies of flowing liquid metal divertor options for fusion-relevant magnetic fields in the MTOR facility

Ying, Alice; Abdou, Mohamed; Morley, Neil B.; Sketchley, T.; Woolley, R.; Burris, Jonathan; Kaita, R.; Fogarty, P.J.; Huang, Hulin; Lao, Xingsheng; Narula, M.; Smolentsev, S.; Ulrickson, M.

doi:10.1016/j.fusengdes.2004.07.004

Cited by 32 publications

(13 citation statements)

References 7 publications

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“…The size of the time-step used in the integration scheme is updated every time-step to ensure numerical stability according to the Courant-Friedrichs-Lewy (CFL) condition and criteria depending on the force per unit mass of fluid the and viscous diffusion term, as per the work done by Monaghan and Kos 15) . The minimum time step due to the force is computed as follows ‖ ‖ (20) where F a is the force per unit mass evaluated for all particles. The time-step according to the CFL criteria and viscous diffusion is…”

Section: Time Integrationmentioning

confidence: 99%

“…One of the main challenges facing divertor design is the potential damage to solid plasma facing components, primarily made from tungsten due to the extremely high thermal fluxes (~ 10 MW/m 2 ) anticipated in future designs of reactors planned to provide energy to the public electricity grid 1,2) . Liquid metals were suggested to replace solid plasma facing components as viable alternatives for future fusion reactor designs 20,21,22) .…”

Section: Introductionmentioning

confidence: 99%

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A Study on Smoothed Particle Hydrodynamics for Liquid Metal Flow Simulation

Salami

Hanada

2019

Evergreen

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In order to address the problem of heat and particle removal in tokamak-type, magnetic confinement nuclear fusion reactors, a divertor that utilizes liquid metal is suggested to replace solid tungsten divertors due to concerns regarding their structural integrity at high energy fluxes. The operation of such a device gives rise to phenomena spanning multiple disciplines of physics such as fluid dynamics, electromagnetics, thermodynamics and plasma physics. Smoothed Particle Hydrodynamics (SPH) is a Lagrangian, mesh-free numerical method that has been proven effective in a variety of disciplines. In this work, the hydrodynamic aspect of the liquid metal divertor is simulated using SPH, paving the way to implement additional physics in future work.

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Section: Time Integrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Study on Smoothed Particle Hydrodynamics for Liquid Metal Flow Simulation

Salami

Hanada

2019

Evergreen

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“…-Possibility of stabilization of free surface flow of liquid lithium It was demonstrated in experiment that turbulence on free surface flow was well suppressed by the magnetic field [14,17]. -Neutron irradiation under strong magnetic field This is favorable for the development of material for a magnetic fusion reactor.…”

Section: Merits Of Curved Mglt and Impact To Test Cellmentioning

confidence: 99%

Concept of curved magnetically guided liquid lithium target without a back plate for IFMIF

Kimura

Hoashi

2013

Fusion Engineering and Design

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“…The use of liquid metals as the divertor materials can improve in the tolerance to high thermal and neutron loads. There are several options in the design of liquid metal divertors such as the shower [13] and the high-speed flow of liquid metal [14]. However, each design has merits and demerits in terms of heat resistance, heat exchange, gas evacuation, and fluid stability [15].…”

Section: Introductionmentioning

confidence: 99%

Mechanism of droplet ejection from liquid gallium interacting with inductively coupled hydrogen plasma

Hamana,

Shirai,

Sasaki

2023

J. Phys. D: Appl. Phys.

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In this study, we observed droplet ejection from liquid gallium interacting with an inductively coupled hydrogen plasma. We observed the formation of a bubble in the liquid gallium, and the droplet ejection was synchronized with the burst of the bubble. We examined droplet ejection frequency by varying the ion flux [(0.2 – 7.1) × 1014 cm-2s-1], the ion energy (15 – 215 eV), and the liquid gallium temperature (370 K – 500 K). As a result, we found that the droplet ejection frequency increased with the ion flux and the liquid gallium temperature, whereas it decreased with the ion energy. We observed that the inside of the bubble in the liquid gallium was occupied by hydrogen. Furthermore, the amount of hydrogen dissolved in the liquid gallium was dependent on the discharge conditions. On the basis of the experimental results, we have proposed a mechanism for bubble formation and droplet ejection. The key in the mechanism is the supersaturated dissolution of hydrogen due to the ion irradiation.

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Exploratory studies of flowing liquid metal divertor options for fusion-relevant magnetic fields in the MTOR facility

Cited by 32 publications

References 7 publications

A Study on Smoothed Particle Hydrodynamics for Liquid Metal Flow Simulation

A Study on Smoothed Particle Hydrodynamics for Liquid Metal Flow Simulation

Concept of curved magnetically guided liquid lithium target without a back plate for IFMIF

Mechanism of droplet ejection from liquid gallium interacting with inductively coupled hydrogen plasma

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