混流式核主泵水力模型的规模效应

IF 2.6 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY
Tao Zhou, Yong Zhu, Shengnan Tang
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引用次数: 0

摘要

优化核主泵(NMP)的液压元件并进行性能验证至关重要。由于实际核主泵体积大、运行要求严格、试验成本高,实际试验存在诸多困难。本文以混流式 NMP 为研究对象,选择 CAP1400 NMP 作为原型泵(PP)。根据相似性转换算法(SCA)建立了不同尺度的模型泵(MP)。然后,研究并比较了不同尺度对水力性能和内部流场的影响。结果表明,在设计工作点,水头预测值比设计值高 4%,最大效率点接近设计工作点。在全流工况范围内,PP 和 MP 的扬程、水力效率、叶轮效率、导叶能量损失、内部流场和涡度分布与流量变化趋势基本一致。PP 和 MP 符合 SCA 标准。利用模型比例缩放法实现了 NMP 的水力设计和性能优化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Scale effect for hydraulic model of a mixed flow nuclear main pump
Optimizing the hydraulic components of nuclear main pump (NMP) and conducting performance verification is crucial. Due to the large size of the real NMP, the strict requirements of the operation and the high test-cost, there are many difficulties in the real test. The mixed flow NMP is taken as the research object, and the CAP1400 NMP is selected as the prototype pump (PP). The model pumps (MPs) with varying scales are established based on the similarity conversion algorithm (SCA). Then, the influence of different scales on the hydraulic performance and internal flow field is investigated and compared. It is demonstrated that the predicted value of head is 4 % higher than the design value at the design operating point, and the maximum efficiency point is close to the design operating point. In the range of full flow conditions, the head, hydraulic efficiency, impeller efficiency, guide vane energy loss, internal flow field, and vorticity distribution of PP and MPs are basically consistent with the trend of flow rate variations. The PP and MPs conform to the SCA. The hydraulic design and performance optimization of NMP are achieved by using the model proportional scaling approach.
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来源期刊
Nuclear Engineering and Technology
Nuclear Engineering and Technology 工程技术-核科学技术
CiteScore
4.80
自引率
7.40%
发文量
431
审稿时长
3.5 months
期刊介绍: Nuclear Engineering and Technology (NET), an international journal of the Korean Nuclear Society (KNS), publishes peer-reviewed papers on original research, ideas and developments in all areas of the field of nuclear science and technology. NET bimonthly publishes original articles, reviews, and technical notes. The journal is listed in the Science Citation Index Expanded (SCIE) of Thomson Reuters. NET covers all fields for peaceful utilization of nuclear energy and radiation as follows: 1) Reactor Physics 2) Thermal Hydraulics 3) Nuclear Safety 4) Nuclear I&C 5) Nuclear Physics, Fusion, and Laser Technology 6) Nuclear Fuel Cycle and Radioactive Waste Management 7) Nuclear Fuel and Reactor Materials 8) Radiation Application 9) Radiation Protection 10) Nuclear Structural Analysis and Plant Management & Maintenance 11) Nuclear Policy, Economics, and Human Resource Development
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