评估用于预测超临界水冷却棒束传热系数分布的查找表

IF 2.6 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Nuclear Engineering and Technology Pub Date : 2024-07-22 DOI:10.1016/j.net.2024.07.044
Rashed MD. Sardar, Akhmed M. Baisov
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引用次数: 0

摘要

评估了用于预测超临界水冷却棒束传热系数分布的可用查询表,目的是将其进一步用于超临界水冷反应堆各种燃料组件的计算分析。对基于查表的计算结果、经验相关值以及光滑棒束和线包棒束的实验数据进行了比较。结果表明,渥太华大学为描述圆管中改进和恶化的传热机制而创建的查找表,能够以 30% 的均方偏差描述可用的数据点。需要注意的是,金属丝的存在会加强伪临界温度区域附近的传热交换,但现有版本的查询表无法考虑到这一影响。尽管如此,通过引入额外的修正系数,利用查表预测传热系数仍有进一步改进的潜力。
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ASSESSMENT OF LOOK-UP TABLES FOR THE PREDICTION OF HEAT TRANSFER COEFFICIENT DISTRIBUTION IN ROD BUNDLES COOLED BY SUPERCRITICAL WATER
The evaluation of available Look-Up Tables for prediction of heat transfer coefficient distribution in rod bundles cooled by supercritical water with the aim of their further use in computational analyses of various Fuel Assembles of Supercritical Water-Cooled Reactors is made. The comparison between the calculations based on Look-Up Tables with the values from empirical correlations and experimental data for smooth and wire-wrapped rod bundles was presented. The obtained results showed that Look-Up Table of the University of Ottawa, which was created to describe improved and deteriorated heat transfer regimes in round tubes, allows describing available data points with 30% of the mean square deviation. It is noted that the presence of wire intensifies heat transfer exchange near pseudocritical temperature region but existing versions of Look-Up Tables cannot take into account this effect. Nevertheless, there is potential for further improvement in predicting the heat transfer coefficient using Look-Up Table by introducing additional correction factors.
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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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