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首页> 外文期刊>Annals of nuclear energy >Flow distribution investigation and sensitive analyses on reverse flow in U-tubes of steam generator under natural circulation
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Flow distribution investigation and sensitive analyses on reverse flow in U-tubes of steam generator under natural circulation

机译：自然循环下蒸汽发生器U形管逆流的流动分布研究及敏感分析

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The reverse flow is an important phenomenon occurring in inverted U-tube steam generator under natural circulation, which may result the heat accumulating in the first loop and cause serious accident. Thus, researching the flow performance and its influence factors in steam generator is necessary for the safety of nuclear reactor. In this paper, the criterion of reverse flow judgement and flow distribution program are developed firstly. Based on the model of PCATEL (Parallel Channel Test Loop) pressurized water reactor, program validation and calculation of flow distribution of steam generator is carried out. As last, sensitive analyses of parameters on both steam generator flow distribution and performance of inverted U-tubes are carried out. From the result, the requirement of heat transferring can be satisfied in the condition of PACTEL facility design. In addition, different kinds of parameters have significant influence to the performance of steam generator flow distribution and fluid in single inverted U-tube. (C) 2021 Elsevier Ltd. All rights reserved.
机译：反向流动是在天然循环下的倒u形管蒸汽发生器中发生的重要现象，这可能导致在第一环中积聚的热量并导致严重事故。因此，在核反应堆的安全性需要研究蒸汽发生器中的流动性能及其影响因素。在本文中，首先开发了反向流动判断和流分配程序的标准。基于PCATEL（并联通道测试回路）加压水反应器的模型，进行了蒸汽发生器流量分布的程序验证和计算。作为最后，进行了对蒸汽发生器流量分布的参数和倒置U形管的性能的敏感分析。从该结果来看，可以在帕特尔设施设计的条件下满足热传递的要求。此外，不同类型的参数对蒸汽发生器流量分布的性能和单倒出的U形管中的流体具有显着影响。 （c）2021 elestvier有限公司保留所有权利。

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