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ウエダ ヨシオ
Ueda Yoshio
上田 良夫 所属 追手門学院大学 理工学部 電気電子工学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2021 |
| 形態種別 | 論文 |
| 査読 | 査読あり |
| 標題 | Pulse Shape Dependence of Vapor Shielding Efficiencies During Transient Heat Loads |
| 執筆形態 | 共著・編著（代表編著を除く） |
| 掲載誌名 | Plasma and Fusion Research |
| 掲載区分 | 国内 |
| 巻・号・頁 | 16,pp.140092-1 |
| 著者・共著者 | Kenzo Ibano,Yoshio Ueda,Tomonori Takizuka |
| 概要 | Studies have shown that the erosion amount is strongly dependent on the total energy density and duration of a transient heat pulse. Recently, it was pointed out that the erosion amount is also dependent on the pulse shape [J.H. Yu et al., Nucl. Fusion 55, 093027 (2015), and D. Motoi et al., Fusion Eng. Des. 165, 112209 (2021)]. Meanwhile, it is predicted that the erosion during the transient heat loads can be suppressed by vapor shieldings, and the efficiency of the vapor shielding may differ between the pulse shapes. Thus, in this study, we investigate the pulse shape dependence of the vapor shielding effect by a particle-in-cell based simulation code, PIXY. Two types of square shapes and three types of triangular shapes are examined. Among the triangular shapes, it is found that the vapor shielding is effective especially in “Negative Ramp” triangular shape, where the peak heat flux comes first. |
| DOI | 10.1585/PFR.16.1405092 |
| ISSN | /1880-6821 |