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Interaction of meta...
Interaction of metal dust adhered on castellated substrates with the ELMy H-mode plasmas of ASDEX-Upgrade
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- Ratynskaia, S. (author)
- KTH,Rymd- och plasmafysik
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- Tolias, P. (author)
- KTH,Rymd- och plasmafysik
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- De Angeli, M. (author)
- CNR, Ist Fis Plasma, I-20125 Milan, Italy.
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- Rohde, V. (author)
- Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
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- Herrmann, A. (author)
- Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
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- Ripamonti, D. (author)
- CNR, Inst Condensed Matter Chem & Energy Technol, I-20125 Milan, Italy.
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- Riva, G. (author)
- CNR, Inst Condensed Matter Chem & Energy Technol, I-20125 Milan, Italy.
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- Thorén, E. (author)
- KTH,Rymd- och plasmafysik
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- Vignitchouk, L. (author)
- KTH,Rymd- och plasmafysik
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- Sieglin, B. (author)
- Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
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- Krieger, K. (author)
- Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
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- Neu, R. (author)
- Max Planck Inst Plasma Phys, D-85748 Garching, Germany.
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(creator_code:org_t)
- 2018-08-13
- 2018
- English.
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In: Nuclear Fusion. - : IOP PUBLISHING LTD. - 0029-5515 .- 1741-4326. ; 58:10
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https://doi.org/10.1...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Castellated substrates with adhered micron dust have been exposed in the outer ASDEX-Upgrade divertor to ELMy H-mode discharges. Beryllium proxy (chromium, copper) and refractory metal (tungsten, molybdenum) dust has been deposited on the plasma-facing and plasma-shadowed sides of the monoblocks as well as the bottom of the gaps. Interaction with time-averaged transient heat loads up to 5 MWm(-2) led to dust remobilization, clustering, melting and wetting-induced coagulation. The amount of dust released in the vessel has been quantified and remobilized dust trajectories inferred. Gaps can efficiently trap locally adhered dust, but dust detaching from adjacent monoblocks does not preferentially move inside the gaps implying that they do not constitute a dust accumulation site. Heat transfer simulations of melting events are also reported taking into account heat constriction due to the finite contact area and the presence of surface roughness.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- metallic dust
- transient heat loads
- droplets
- castellated PFC
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Ratynskaia, S.
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Tolias, P.
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De Angeli, M.
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Rohde, V.
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Herrmann, A.
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Ripamonti, D.
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show more...
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Riva, G.
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Thorén, E.
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Vignitchouk, L.
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Sieglin, B.
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Krieger, K.
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Neu, R.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Nuclear Fusion
- By the university
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Royal Institute of Technology