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Applications of the CATHARE and CONTAIN codes in parallel runs

P. Sardain, M. Porporat, J.M. Gatt, G. Marbach1998年Fusion Engineering and DesignIF 1.7出版社

AbstractThe present work discussed the risks and consequences of multiple failure sequences for the Safety and Environmental Assessment of Fusion Power (SEAFP) tokamak concept. We analysed a double LOCA scenario within the divertor cooling loop; it starts with an ex-vessel LOCA, inducing an in-vessel LOCA. The induced in-vessel LOCA is due to a thermal crisis occuring in the plasma facing divertor structures, leading to suddenly enhanced thermo-mechanical stresses likely to cause a rupture. We wanted to calculate, as accurately as possible, the overpressure within the different compartments that are involved in the scenario, in order to verify that the design limits of these compartments are not exceeded. We calculated the transients with the help of the CATHARE code for the coolant loop analysis and the CONTAIN code for the containment analysis. A coupling was made, using the Parallel Virtual Machine (PVM) Sofware system on a Unix computers network; the results are compared to those of a manual coupling.

日本語訳

本論文では、核融合安全評価(SEAFP)トカマク概念における多重故障シーケンスのリスクと結果について検討した。ダイバータ冷却ループ内の二重LOCAシナリオを分析した。このシナリオは、ループ外LOCAに始まり、それによってループ内LOCAが誘発されるというものである。誘発されたループ内LOCAは、プラズマ対向ダイバータ構造物における熱流動不安定に起因し、その結果、熱機械的応力が急激に増大して破損に至る可能性がある。本解析の目的は、当該シナリオに関与する各区画の設計限界が超過されないことを検証することである。冷却材ループ解析にはCATHAREコード、格納容器解析にはCONTAINコードを用いて過渡現象を計算し、両コードの連成にはParallel Virtual Machine(PVM)システムを利用した。計算はUNIX系ワークステーション上で実施した。得られた結果は、手動連成による解析結果と比較検証された。

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