二次元衝突噴流による凹面および平面の冷却特性と限界熱流束

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  • Critical Heat Flux and Convective Heat Transfer with a Two-Dimensional Liquid Jet Impinging on Flat and Concave Surfaces.
  • 2ジゲン ショウトツ フンリュウ ニヨル オウメン オヨビ ヘイメン ノ レイ

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The diverter surface of the ITER Fusion Engineering Reactor is exposed to strong radiation locally up to 20 MW/m2. We have proposed a diverter cooling system which consists of concave surfaces cooled by two-dimensional liquid jets. Experiments are conducted to investigate local heat transfer coefficeint and critical heat flux on flat and concave surfaces under various cooling conditions. Based on photographic study, a critical heat flux model was derived by modifying a Haramura's model to take account of the subcooling effect. The proposed correlation based on this model was in good agreement with the experimental data.

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