Demonstrating electromagnetic control of free-surface, liquid-metal flows relevant to fusion reactors

Hvasta, Michael George; Kolemen, Egemen; Fisher, Adam; Ji, Hantao

doi:10.1088/1741-4326/aa9344

Demonstrating electromagnetic control of free-surface, liquid-metal flows relevant to fusion reactors

Journal Article · Fri Oct 13 00:00:00 EDT 2017 · Nuclear Fusion

DOI:https://doi.org/10.1088/1741-4326/aa9344· OSTI ID:1399785

Hvasta, Michael George ^[1]; Kolemen, Egemen ^[1]; Fisher, Adam ^[1]; Ji, Hantao ^[1]

Princeton Univ., Princeton, NJ (United States)

Plasma-facing components (PFC's) made from solid materials may not be able to withstand the large heat and particle fluxes that will be produced within next-generation fusion reactors. To address the shortcomings of solid PFC's, a variety of liquid-metal (LM) PFC concepts have been proposed. Many of the suggested LM-PFC designs rely on electromagnetic restraint (Lorentz force) to keep free-surface, liquid-metal flows adhered to the interior surfaces of a fusion reactor. However, there is very little, if any, experimental data demonstrating that free-surface, LM-PFC's can actually be electromagnetically controlled. Therefore, in this study, electrical currents were injected into a free-surface liquid-metal that was flowing through a uniform magnetic field. The resultant Lorentz force generated within the liquid-metal affected the velocity and depth of the flow in a controllable manner that closely matched theoretical predictions. Furthermore, these results show the promise of electromagnetic control for LM-PFC's and suggest that electromagnetic control could be further developed to adjust liquid-metal nozzle output, prevent splashing within a tokamak, and alter heat transfer properties for a wide-range of liquid-metal systems.

View Accepted Manuscript (DOE)

Research Organization:: Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-09CH11466

OSTI ID:: 1399785

Journal Information:: Nuclear Fusion, Journal Name: Nuclear Fusion Journal Issue: 1 Vol. 58; ISSN 0029-5515

Publisher:: IOP ScienceCopyright Statement

Country of Publication:: United States

Language:: English

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Demonstrating electromagnetic control of free-surface, liquid-metal flows relevant to fusion reactors Hvasta, M.; Kolemen, E.; Fisher, A. Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States) https://doi.org/10.11578/1561998	dataset	January 2018
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Liquid Metal Diagnostics Hvasta, M. G.; Bruhaug, G.; Fisher, A. E. Fusion Science and Technology, Vol. 76, Issue 1 https://doi.org/10.1080/15361055.2019.1661719	journal	November 2019

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