...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nuclear Engineering and Design >Assessment of RELAP5/MOD3.2 for simulating density wave oscillation with a two-phase natural circulation test facility
【24h】

Assessment of RELAP5/MOD3.2 for simulating density wave oscillation with a two-phase natural circulation test facility

机译：用两相自然循环试验设施模拟密度波振荡的Relap5 / mod3.2评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The slight boiling mode (SBM) of the nuclear heating reactor (NHR) designed to operating under two-phase natural circulation with low vapor quality and PWR-type reactor design is rigorously constrained by the flow instability and the extent of saturated boiling in the core. The objective of this study is to evaluate the appli-cability of the RELAP5 code to simulate flow instability in natural circulation systems and then to quantitatively estimate the operating parameters space of the SBM. Based on a well-scaled facility of NHR200, a RELAP5 model is developed. After a general assessment, sensitivity analysis and frequency spectrum analysis of flow resistance coefficients, numerical method, and drift velocity are further conducted for better understanding the deviations existing in simulations. It can be found that the nature of density wave oscillation (DWO) can be revealed by the RELAP5 code from the reasonable agreements between the simulation results and experimental data. Further-more, a reasonable calibration of the drift velocity can greatly improve the accuracy of both static parameters and oscillating characteristic frequency. Ultimately, quantitative calculation of the operating parameter space is achieved with the RELAP5 code assisted by the dimensionless number N-sub/N-pch. This work paves the way for studying the start-up and operating characteristics of SBM.
机译：核加热反应器（NHR）的轻微沸点（SBM）设计为在具有低蒸气质量和PWR型反应器设计的两相自然循环下操作的核加热反应器（NHR）严格地受到核心不稳定性的严格限制和核心饱和沸腾的程度。本研究的目的是评估RETAP5代码的应用能力，以模拟天然循环系统中的流动不稳定性，然后定量估计SBM的操作参数空间。基于NHR200的良好设施，开发了RELAP5模型。在一般评估，进一步进行了流动性系数，数值方法和漂移速度的敏感性分析和频谱分析，以便更好地理解仿真中存在的偏差。可以发现，从仿真结果和实验数据之间的合理协议，RELAP5码可以揭示密度波振荡（DWO）的性质。此外，漂移速度的合理校准可以大大提高静态参数和振荡特性频率的准确性。最终，利用由无量纲数字N-SUB / N-PCH辅助的RETAP5码实现操作参数空间的定量计算。这项工作为研究SBM的启动和操作特性铺平了道路。

著录项

  • 来源
    《Nuclear Engineering and Design》 |2021年第9期|111358.1-111358.12|共12页
  • 作者

    Teng Chen; Xie Heng; Jia Haijun;

  • 作者单位

    Tsinghua Univ Inst Nucl & New Energy Technol Beijing 10084 Peoples R China|Minist Educ Key Lab Adv Reactor Engn & Safety Beijing 10084 Peoples R China;

    Tsinghua Univ Inst Nucl & New Energy Technol Beijing 10084 Peoples R China|Minist Educ Key Lab Adv Reactor Engn & Safety Beijing 10084 Peoples R China;

    Tsinghua Univ Inst Nucl & New Energy Technol Beijing 10084 Peoples R China|Minist Educ Key Lab Adv Reactor Engn & Safety Beijing 10084 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Density wave oscillation; Thermal hydraulic; Relap5; Natural circulation;

    机译：密度波振荡;热液压;RELAP5;自然循环;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号