定位格架对流场影响的可视化实验研究

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Visualization Test for Flow Field of Bundles with Grid Spacers

National Key Laboratory of Bubble Physics & Natural Circulation, Nuclear Power Institute of China, Chengdu, 610041, China

摘要: 进行可视化实验,研究AFA-2G5×5定位格架对流场的影响。采用染色法研究定位格架顶端叶片的交混作用,用白色玻璃球作为示踪剂研究棒束内的三维流场分布,二维激光多普勒测速仪(LDV)测量定位格架上下游的横向和轴向速度分布。实验还得到了定位格架的压降特性和光棒的摩擦阻力特性。
- 定位格架 /
- 流场 /
- 可视化实验 /
- 激光多普勒测速仪
Abstract: This paper studied the effect of AFA-2G 5x5 grid spacers on flow used in visualization test. The dye method was used to study the mixture effect of mixing vanes. Tracing particle method was used to observe 3D-flow field in rod bundles. 2D Laser Doppler Velocimeter （LDV） measured axial and lateral velocities of up-flow and down-flow of grid spacers. Pressure drops were also measured to estimate loss coefficients for the grid spacer and friction factors for rod bundles, and obtained formulation for loss coefficients and Reynolds and formulation for friction factors and Reynolds.
- Grid spaces /
- Flow field /
- Visualization test /
- Laser doppler velocimeter