带搅混格架5&#215;5棒束流场的激光多普勒测量

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带搅混格架5×5棒束流场的激光多普勒测量

基金项目:

核反应堆系统设计技术重点实验室资助(LRSDT2017403)

1. School of Nuclear Science and Engineering, Shanghai Jiaotong University, Shanghai, 200240, China;
2. China National Nuclear Corpration, Beijing, 100822, China;
3. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

摘要: 采用激光多普勒测速(LDV)系统,对带有2道搅混格架的5×5棒束格架下游4个横截面的流场进行了轴向流速测量。实验测得了各个截面上的平均轴向速度分布和轴向脉动速度均方根(RMS)分布。通过比较不同截面的平均速度与RMS速度的差异,分析了定位格架下游流场的演变规律;比较了2道格架下游的实验数据,分析了上游流场对格架效应的影响。本文实验数据是在充分重复性实验的基础上获得的,可以为计算流体动力学(CFD)结果的验证和评价提供基准参考。
- 5× /
- 5棒束 /
- 搅混格架 /
- LDV测量 /
- 湍流流场
Abstract: The Laser Doppler Velocimetry（LDV） system is applied to measure the axial flow velocity on four cross sections downstream the 5×5 rod bundle with two mixing vanes. Mean velocity and RMS velocity on each cross section is obtained and by comparing the mean velocity and RMS velocity on different cross section, the distribution pattern downstream the mixing vane grids is analyzed. By comparing the experiment data downstream the two mixing vane grids, the effect of upstream flow field on the grid effect is analyzed. All experiment data is acquired based on sufficient repetitive experiment, and the data can be used for the validation and assessment of CFD computation results.
- 5× /
- 5 Rod bundle /
- Mixing vane grid /
- LDV Measurement /
- Turbulent flow field