The paper presents status of failure incidents of PWR steam generator heat transfer tubes in Japan as well as causes of failure and measures used for protection.
本文介绍日本压水堆核电站蒸汽发生器传热管破损情况，破损原因和防止传热管破损的措施。
The model simulates sodium flow in the steam generator as quasi-continuum. The model USES volume porosity, area permeability and distributed resistance to model the tubes and support plates.
假设为大孔隙多孔介质，模拟钠在蒸汽发生器内的流动，引入体积孔隙率，面渗透率和分布阻力来模拟管束、支撑板对钠流动的扰动。
The thermal stresses in condenser tubes directly affect the tightness between cooling tubes and tubes plate, and affect the safety of steam generator.
凝汽器冷却管热应力直接影响到冷却管与管板之间连接的密封性，从而影响到蒸汽发生器的安全运行。
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