Experimental and numerical studies on the hydraulic performance and the internal flow characteristics of lead-bismuth in the main coolant pump of LFR

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-10-01 DOI:10.1016/j.nucengdes.2024.113618

Zutao Xiang, Liangxing Li, Xiangyang Xu, Shang Shi, Zhenxin Lei

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引用次数: 0

Abstract

As the key component of the primary circuit of a lead-cooled fast reactor (LFR), the hydraulic performance and the internal flow characteristics of the main coolant pump (MCP) are significantly important to the long-term safe and efficient operation of LFR. The present study reports an experimental and numerical investigation of the hydraulic performance and the internal flow characteristics of a centrifugal pump, which is considered one of the candidates for the MCP in LFR. Based on the experimental platform of Liquid Metal-Supercritical Fluid coupled heat transfer (LMSF) of Xi’an Jiaotong University, the hydraulic performances of a centrifugal pump like the pump head and its efficiency are studied and the measured data is also used to validate the accuracy of the numerical method which are employed to study the flow characteristics of MCP, as velocity, pressure, turbulent kinetic energy (TKE). The results show that the deviation of experimental and numerical simulation results is less than 5%. The high velocity region in the impeller channel is concentrated near the hub side of the blade inlet, and the significant pressure difference of the blade surface is primarily concentrated in the second half and shroud region. The inlet area of the blade exhibits a concentration of high TKE and the circular distribution of TKE within the impeller exhibits a periodic pattern, with its frequency being consistent with the number of blades.

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对低温冷冻机主冷却剂泵中铅铋的水力性能和内部流动特性的实验和数值研究

作为铅冷快堆一次回路的关键部件，主冷却剂泵（MCP）的水力性能和内部流动特性对铅冷快堆的长期安全高效运行至关重要。本研究报告对离心泵的水力性能和内部流动特性进行了实验和数值研究，离心泵被认为是 LFR 主冷却剂泵的候选泵之一。基于西安交通大学的液态金属-超临界流体耦合传热（LMSF）实验平台，研究了离心泵的水力性能，如泵扬程和效率，并利用测量数据验证了数值方法的准确性。结果表明，实验结果与数值模拟结果的偏差小于 5%。叶轮通道中的高速区域集中在叶片入口轮毂侧附近，叶片表面的显著压差主要集中在后半部和护罩区域。叶片进口区域集中了较高的 TKE，叶轮内 TKE 的圆形分布呈现周期性规律，其频率与叶片数量一致。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.