Development of a RELAP5 model for the thermo-hydraulic characteristics simulation of the helically coiled tubes

Annals of Nuclear Energy（2021）

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摘要

•A heat transfer coefficient and friction factor model for helical tubes is proposed.•The model for helical tubes is added to the RELAP5 code.•The model accurately predicts the heat transfer coefficient and pressure drop.•The model accurately predicts the flow instability thresholds in parallel tubes.

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关键词

Helically coiled tubes,Thermal hydraulic characteristics,RELAP5,Flow stability threshold

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