Study on dynamics of W melt-layer splashing generated by a transient heat load simulator with a plasma gun in an external magnetic field
| Project/Area Number |
26420854
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | University of Hyogo |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
永田 正義 兵庫県立大学, 工学研究科, 教授 (00192237)
菊池 祐介 兵庫県立大学, 工学研究科, 准教授 (00433326)
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| Co-Investigator(Renkei-kenkyūsha) |
MIYAZAWA Junichi 核融合科学研究所, 教授 (50300728)
MASUZAKI Suguru 核融合科学研究所, 教授 (80280593)
TOKITANI Masayuki 核融合科学研究所, 助教 (30455208)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | タングステン溶融層 / 磁化同軸プラズマガン / プラズマ照射 / プラズマ対向材 / パルス熱負荷 / プラズマカガン / 熱負荷照射 / プラズマガン |
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| Outline of Final Research Achievements |
A magnetized coaxial plasma gun was employed as a powerful transient heat load simulator for material damage tests required in ITER. The high pulsed heat flux can damage pure tungsten samples (W) leading to surface evaporation, cracking, melting, boiling and droplet splashing. The dynamics of W droplet motion was investigated under the externally applied magnetic field by using a high-speed camera. It is found that the magnetic field could decrease the droplet speed and suppress the droplet splashing as the field increases. The suppression efficiency might depend on the direction of the parallel magnetic field. The 2D surface temperature measurement also confirmed that the surface temperature reached up to 3700 K immediately after the plasma exposure.
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Report
(4 results)
Research Products
(5 results)
