燃料组件单相交混系数试验研究

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Experimental Research on Mixing Coefficient of Fuel Assembly in Single-Phase

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

摘要: 在高温高压大型热工试验装置上,采用5×5全长棒束装配法国X型格架,开展燃料组件交混系数试验研究。试验设计了专门的测温组件,成功实现子通道出口温度场的精确测量。利用子通道分析程序FLICAⅢF与试验数据相配合,共同确定燃料组件的交混系数值。试验所得交混系数值为0.065,与原设计值0.066十分接近。试验同时验证了交混系数主要由燃料组件结构决定,热工参数影响极小。
- 交混系数 /
- 燃料组件 /
- 分析程序 /
- 试验研究
Abstract: The mixing coefficient test of the fuel assembly with French X type space grids was performed in the Large Scale Thermo-Hydraulic Experiment Facility. The special temperature measurement element was designed and exit temperatures of subchannels were measured accurately. The mixing coefficient obtained from the test, in conjunction with FLICAⅢF subchannel analysis code, is 0.065, which is closed to French designed data 0.066. The experimental results also show that the mixing coefficient is affected by the structure of fuel assembly rather than by thermal parameters.
- Mixing coefficient /
- Fuel assembly /
- Analysis program /
- Experimental research