超高出力密度炉心ABWRの実用化(1) : 流量・出力振動下沸騰遷移現象に関する実験的研究(転水炉・次世代炉,<特集>第13回動力・エネルギー技術シンポジウム)

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  • Experimental Study on Boiling Transition under Flow-Power Oscillating Condition for Hyper ABWR(Light Water Reactor・Advanced Reactor,<Special Issue>Power and Energy System Symposium)
  • 超高出力密度炉心ABWRの実用化(1)流量・出力振動下沸騰遷移現象に関する実験的研究
  • チョウコウシュツリョク ミツド ロシン ABWR ノ ジツヨウカ 1 リュウリョウ シュツリョク シンドウ カ フットウ センイ ゲンショウ ニ カンスル ジッケンテキ ケンキュウ

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説明

In the envisioned high-power density core plant, the degradation of stability is concerned that is attributed to the shortening of rod heat conduction time constant upon the dense fuel grid and the increment of pressure drop caused by the wall friction. Under power and flow oscillating conditions, the two-phase flow behavior might be different from that under the steady conditions. Therefore, the thermal-hydraulic test using the rod bundle under oscillating conditions were performed to obtain the verification data for the analysis code. In this paper, the test results were described. It was found that the critical power decreased under flow oscillating conditions compared with under steady conditions, and the power oscillation had a little effect on the critical power.

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