Spacer Effect on Liquid Film Flow and Critical Power in BWR Fuel Bundles.
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概要
- 論文の詳細を見る
Liquid film thickness measurements and flow pattern observations near a spacer have been carried out using 4×4 and 9×9 mock-up fuel bundles with air-water co-current flow. The spacer had two different effects on the liquid film flow in the downstream region: (a) liquid droplet entrainment and deposition induced by turbulence enhancement in gas core flow ; and (b) liquid droplet entrainment and deposition induced by a direct interaction of liquid film flow and spacer elements. The former effect was taken into account for development of a new spacer model to estimate dependence of critical power on spacer pitch. The liquid film model, including the spacer model, was confirmed to predict the critical power with high accuracy.
著者
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Kanazawa Toru
Energy Research Laboratory Hitachi Ltd.
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NISHIDA Koji
Energy Research Laboratory, Hitachi Ltd.
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Yokomizo Osamu
Energy Research Laboratory Hitachi Ltd.
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KANAZAWA Toru
Energy Research Laboratory, Hitachi Ltd.
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MASUHARA Yasuhiro
Hitachi Works, Hitachi Ltd.
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