并联矩形通道流动不稳定性模型研究

钱立波; 丁书华; 秋穗正

并联矩形通道流动不稳定性模型研究

1. 中国核动力研究设计院核反应堆系统设计技术重点实验室, 成都, 610041;
2. 西安交通大学核科学与技术学院, 西安, 710049

详细信息

作者简介:
钱立波(1983—),男,工程师。2011年毕业于西安交通大学核科学与技术专业,获博士学位。现从事反应堆热工水力与安全分析的研究工作。丁书华(1980—),男,高级工程师。2006年毕业于上海交通大学核能科学与工程专业,获硕士学位。现从事核反应堆热工水力与安全分析的研究工作。秋穗正(1965—),男,教授,博士生导师。1996年毕业于西安交通大学核科学与技术专业,获博士学位。现从事核反应堆热工水力与安全分析及汽-液两相流动与沸腾传热教学与科研工作

中图分类号: TL333
计量
- 文章访问数: 13
- HTML全文浏览量: 5
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2013-03-15
- 修回日期: 2013-12-10
- 网络出版日期: 2025-02-15

Research on Model of Flow Instability in Parallel Rectangular Channels

1. National Key Laboratory for Reactor System Design Technology, Nuclear Power Institute of China, Chengdu, 610041, China;
2. School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China

摘要

摘要: 针对并联矩形通道,基于积分法建立包括入口段、加热段和上升段的并联通道流动不稳定性模型,开发并联矩形通道流动不稳定性分析程序,并采用国内外并联通道流动不稳定性实验对程序进行验证;其次,采用计算分析程序分析并联矩形双通道系统压力、入口及出口节流等条件对矩形双通道流动不稳定性边界和系统脉动频率的影响。分析结果表明,不同压力下系统流动不稳定性边界和系统脉动频率分布重合,但对相同入口过冷度工况,随着压力增大,系统稳定性增强,系统脉动频率增大;随着入口阻力系数增加和出口阻力系数减小,系统稳定性增强,系统脉动频率增大。
- 并联矩形通道 /
- 流动不稳定性 /
- 不稳定性边界 /
- 系统频率
Abstract: A mathematical and physical model for flow instability in one dimensional parallel rectangular channels was established, including the entrance section, heater section and riser section, and the code for flow instability in parallel two-rectangular channel was developed based on the mathematical model, which was validated with the experimental results of flow instability. Based on the code, the effect of the system pressure, the inlet and outlet throttling on the margin of stability and the frequency of oscillations was analyzed. The results showed that the margin of stability and the distribution of frequency were overlapped at different system pressure and the system would be stabilized and the frequency of the system would increase with the increasing of the inlet throttling and system pressure and the decreasing of outlet throttling.
- Parallel rectangular channel /
- Flow instability /
- Margin of instability /
- Frequency of oscillation