滚动条件下 LBE 横流管束传热特性的数值研究

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2024-08-22 DOI:10.1016/j.anucene.2024.110865

Yupeng Yang, Dingsheng Lu, Chenglong Wang, Dalin Zhang, Suizheng Qiu, Guanghui Su, Wenxi Tian

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引用次数: 0

摘要

结合中子经济性和良好的传热性能，铅铋快堆（LFR）在海洋应用中具有更大的前景。螺旋盘管蒸汽发生器（HCOTSG）也是铅铋快堆的典型换热器选择。它被广泛应用于石油化工等多种能源利用领域。为了获得铅铋共晶管束蒸汽发生器在海洋条件下的流动和传热特性，有必要对移动条件下的铅铋共晶管束横流进行研究。本文提出了一种数值方法来模拟滚动条件下 LBE 跨管束流动的传热特性。研究了轧制条件对不同管布置模型的影响。比较并分析了随时间变化的温度波动曲线和时间平均传热特性。得出了不同工况和不同管束布置下轧制条件的影响结果。倾斜布置和交错布置下的改进率超过 20%，但直列布置下的改进率只能达到 10-15%。在不同轧制条件下的计算模型中，最大传热改善率达到 27.3%。此外，还比较了不同条件下的圆周温度结果，以分析轧制条件的影响。这项研究可能有助于 LBE HCOTSG 在海洋条件下的应用。

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Numerical study on heat transfer characteristics of LBE cross flow tube bundle under rolling conditions

Combined with the neutron economy and good heat transfer performance, lead–bismuth fast reactor (LFR) has a larger prospect for marine applications. Helical coiled once-through tube steam generator (HCOTSG) is also a typical heat exchanger option for LFR. It is widely adopted in a variety of energy utilization fields, such as petrochemical industry. Study on Lead-bismuth eutectic (LBE) cross flow of tube bundle under moving conditions is necessary for obtaining the flow and heat transfer characteristics of LBE HCOTSG in marine conditions. A numerical method to simulate the heat transfer characteristic of LBE cross tube bundle flow under rolling conditions is proposed. The influence of the rolling conditions on the models with different tube arrangements are investigated. The temperature fluctuation curves with time and the time-averaged heat transfer characteristics are compared and analyzed. The results of the influence of rolling conditions under different working conditions and different tube bundle arrangements are obtained. The improvement ratio under inclined arrangement and staggered arrangement is more than 20 %, but the improvement under inline arrangement can only reach 10–15 %. Among the calculated models under different rolling conditions, the maximum heat transfer improvement reached 27.3 %. Besides, the circumferential temperature results under different conditions were also compared to analyze the influence of rolling conditions. This study may contribute to the application of LBE HCOTSG under marine conditions.

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.