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Development and Application of SONIC Divertor Simulation Code to Power Exhaust Design of Japanese DEMO Divertor
https://repo.qst.go.jp/records/86146
https://repo.qst.go.jp/records/86146bd61fe92-77cc-4590-9ec1-aa30ebb9be49
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-05-18 | |||||
| タイトル | ||||||
| タイトル | Development and Application of SONIC Divertor Simulation Code to Power Exhaust Design of Japanese DEMO Divertor | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Nobuyuki, Asakura
× Nobuyuki, Asakura× Hoshino, Kazuo (Keio Univ.)× Yuuki, Homma× Yoshiteru, Sakamoto× Special Design Team for Fusion DEMO, Joint× Nobuyuki, Asakura× Yuuki, Homma× Yoshiteru, Sakamoto |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | An integrated divertor simulation code, SONIC, has been developed in order to predict a self-consistent transport solution of the plasma, neutral and impurities in the scrape-off layer (SOL) and divertor. SONIC code has contributed to determining the divertor design and power handling scenarios for the Japanese (JA) fusion demonstration (DEMO) reactor. Radiative cooling scenario of Ar impurity seeding and the divertor performance have been demonstrated to evalu-ate the power exhaust scenarios with Psep = 230–290 MW. The simulation identified the decay length of the total parallel heat flux profile as being broader than the electron one, because of the ion convective transport from the outer divertor to the upstream SOL, produced by the plasma flow reversal. The flow reversal also reduced the impurity retention in the outer divertor, which may produce the partial detachment. Divertor operation margin of key power exhaust parameters to satisfy the peak qtarget less than 10 MWm−2 was determined in the low nesep of 2 − 3 × 1019 m−3 under severe conditions such as reducing radiation loss fraction, i.e., f*raddiv = (Pradsol + Praddiv)/Psep and diffu-sion coefficients (chi and D). The divertor geometry and reference parameters (f*raddiv ~ 0.8, chi = 1 m2s−1, D = 0.3 m2s−1) were consistent with the low nesep operation of the JA DEMO concepts. For either severe assumption of f*raddiv ~ 0.7 or chi and D to their half values, higher nesep operation was required. In addition, recent investigations of physics models (temperature-gradient force on impurity, photon transport, neutral–neutral collision) under the DEMO relevant SOL and divertor condition are presented. | |||||
| 書誌情報 |
PROCESSES; Special Issue Computational Fluid Dynamics (CFD) Simulations for Fusion Reactors 巻 10, 号 5, p. 872, 発行日 2022-04 |
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| 出版者 | ||||||
| 出版者 | MDPI | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2227-9717 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.3390/pr10050872 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.3390/pr10050872 | |||||
