矩形通道边缘堵塞和中心堵塞事故实验研究

袁东东; 邓坚; 谭思超; 祝嘉鸿; 李诚韡; 乔守旭

doi:10.13832/j.jnpe.2022.06.0066

矩形通道边缘堵塞和中心堵塞事故实验研究

doi: 10.13832/j.jnpe.2022.06.0066

袁东东^{1, 2,},
邓坚³,
谭思超^{1, 2, ,},
祝嘉鸿^{1, 2},
李诚韡^{1, 2},
乔守旭^{1, 2}

1.
哈尔滨工程大学核科学与技术学院，哈尔滨，150001
2.
黑龙江省核动力装置性能与设备重点实验室，哈尔滨，150001
3.
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，610213

基金项目: 中央高校基本科研业务费专项资金——博士研究生科研创新基金项目（3072021GIP1502）；国家自然科学基金资助项目（12105064）

详细信息

作者简介:
袁东东（1993—），男，博士研究生，现主要从事核反应堆热工水力方面的研究，E-mail: 1005214183@qq.com

通讯作者:
谭思超，E-mail: tansichao@hrbeu.edu.cn

中图分类号: TL363
计量
- 文章访问数: 217
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- 被引次数: 0
出版历程
- 收稿日期: 2021-11-15
- 修回日期: 2022-01-02
- 刊出日期: 2022-12-14

Experimental Study on Edge Blockage Accidents and Central Blockage Accidents in a Rectangular Channel

Yuan Dongdong^{1, 2
,},
Deng Jian³,
Tan Sichao^{1, 2
, ,},
Zhu Jiahong^{1, 2},
Li Chengwei^{1, 2},
Qiao Shouxu^{1, 2}

1.
College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150001, China
2.
Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin, 150001, China
3.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

摘要

摘要: 为获得矩形通道堵塞事故下流场的演化规律，本文利用粒子图像测速（PIV）技术，针对间隙为3 mm竖直窄矩形通道堵塞事故开展全流场可视化实验研究，对比分析70%阻塞率下边缘堵塞和中心堵塞工况流场结构的差异性。研究发现：边缘堵塞的流场结构比中心堵塞的流场结构更复杂，边缘堵塞工况会因流道阻塞形成更大的回流区，同时在高雷诺数（Re）下会形成壁面分离涡；边缘堵塞更不利于流体热量的导出，其回流区内漩涡的涡量更小，漩涡流动性更差、运动频率更复杂；同时边缘堵塞和中心堵塞内漩涡结构随Re变化趋势也完全相反。
- 粒子图像测速（PIV） /
- 功率谱密度（PSD） /
- 阻塞事故 /
- 板状燃料元件 /
- 矩形通道
Abstract: To obtain the evolution law of the flow field under the rectangular channel blockage accident, the particle image velocimetry (PIV) technology is adopted to carry out a full-flow-field visual experimental study on the vertical narrow rectangular channel blockage accident with a gap of 3 mm to compare and analyze the difference of the flow field structure under the condition of edge blockage and central blockage at 70% blockage rate. It is found that the flow field structure of edge blockage is more complex than that of central blockage, the edge blockage condition will form a larger backflow area due to channel blockage, and a wall separation vortex will be formed at high Reynolds number (Re); the edge blockage is more unfavorable to the removal of fluid heat, and the vorticity of the vortex in the backflow area is smaller, the fluidity of the vortex is worse, and the motion frequency is more complex; At the same time, the variation trend of vortex structure in edge blockage and central blockage with Re is also completely opposite.
- Particle image velocimetry (PIV) /
- Power spectral density (PSD) /
- Blockage accident /
- Plate fuel element /
- Rectangular channel

HTML全文

图 1 实验系统回路

Figure 1. Experimental System Circuit

下载: 全尺寸图片幻灯片

图 2 堵塞模型

Figure 2. Blockage Model

下载: 全尺寸图片幻灯片

图 3 边缘堵塞归一化流向速度云图

x—矩形流道的横向坐标；y—矩形流道的纵向坐标，D_h—矩形通道的水力直径

Figure 3. Normalized Flow Velocity Cloud Chart of Edge Blockage

下载: 全尺寸图片幻灯片

图 4 中心堵塞归一化流向速度云图

Figure 4. Normalized Flow Velocity Cloud Chart of Central Blockage

下载: 全尺寸图片幻灯片

图 5 边缘堵塞涡量分布云图

Figure 5. Cloud Chart of Vorticity Distribution of Edge Blockage

下载: 全尺寸图片幻灯片

图 6 中心堵塞涡量分布云图

Figure 6. Cloud Chart of Vorticity Distribution of Central Blockage

下载: 全尺寸图片幻灯片

图 7 边缘堵塞瞬态流场频谱图

S(f)—功率谱值；f—频率，即流场中漩涡的运动频率

Figure 7. Spectrogram of Transient Flow Field of Edge Blockage

下载: 全尺寸图片幻灯片

图 8 中心堵塞瞬态流场频谱图

Figure 8. Spectrogram of Transient Flow Field of Central Blockage

下载: 全尺寸图片幻灯片

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