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Measurement of LBE flow velocity profile by UDVP

超音波流速分布計による鉛ビスマス流の測定

菊地 賢司; 武田 靖*; 大林 寛生*; 手塚 正雄*; 佐藤 博

Kikuchi, Kenji; Takeda, Yasushi*; Obayashi, Hiroo*; Tezuka, Masao*; Sato, Hiroshi

核破砕ターゲットモデル反転流部の鉛ビスマス流を超音波で測定した。鉛ビスマス流の測定はこれまでに報告がなく、それは濡れ性が悪いことが原因であることが今回の実験で明らかになった。モデルループは同軸二重管の環状流が反転して管状流に移行するため、流れ場の遷移が非定常となる。鉛ビスマスの駆動は電磁ポンプ,流量測定は電磁流量計で行った。測定の結果、陽子ビームが当たる窓部では流れが淀み、熱伝達特性に影響を及ぼす局所流れの様子がわかった。

Measurements of LBE flow velocity profile were realized in the spallation target model by the ultrasonic Doppler velocity profile technique. Hitherto, it has not yet been done well because both of poor wetting property of LBE with stainless steels and poor performance of supersonic probes at high temperatures. Measurement was made for a return flow in the target model, which has coaxially arranged annular and tube channels. The electromagnetic pump generates LBE flow and the flow rate was measured by the electromagnetic flow meter. Measurement results show that re-circulation occurred near the surface of beam window, which might affect a heat transfer of target container.

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パーセンタイル:52.29

分野:Materials Science, Multidisciplinary

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