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Numerical analysis of windowless target in accelerator driven system by use of TPFIT

詳細二相流解析コードTPFITによる加速器駆動未臨界炉ウィンドウレスターゲットの数値解析

吉田 啓之 ; 鈴木 貴行*; 高瀬 和之

Yoshida, Hiroyuki; Suzuki, Takayuki*; Takase, Kazuyuki

A windowless target is currently developed within EUROTRANS. The target couples an Accelerator Driven Systems (ADS) to a subcritical reactor core. In the windowless target, heavy liquid metal is flowing downwards through a concentric feeder surrounding the beam tube and forms a conical free surface. Then, to design the windowless target, a numerical simulation method for this free surface is required. In this paper, as a first step of development of the numerical simulation method for free surface in the windowless target, the detailed two-phase flow simulation code TPFIT developed in JAEA is applied to steam-water experiments that modeled the windowless target. In the results, TPFIT could simulate complicated two-phase flow structure in the windowless target. In addition, recirculation at the center of the free surface was reproduced very well by the present numerical simulation.

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