摘要
基于多级双向比例分析(H2TS)比例模化方法,设计建造了原型、1/2高度比与1/4高度比的模型实验装置,开展了不同加热功率下的自然循环实验,对自然循环特性曲线在降高度比例模化中的失真进行了分析,实验结果表明:自然循环流量、雷诺数、格拉晓夫数、修正格拉晓夫数等表征自然循环主要特征的参数在降高度比例模化后,能够保持自然循环流量-加热功率、雷诺数-格拉晓夫数及雷诺数-修正格拉晓夫数等特征关系曲线不严重失真,原型与模型间的拟合曲线能够形成一对一映射。自然循环特性曲线在降高度比例模化过程中能够较准确复现原型规律,自然循环降高度比例模化实验数据在模拟原型中自然循环特性曲线时的可靠性得到有效验证。
Based on H2TS(Hierarchical,Two-Tiered Scaling)scaled-down method,three groups of experimental facilities,namely prototype,1/2 model and 1/4 model,were designed and built.Natural circulation experiments on different heating power were carried out.The distortion of natural circulation characteristic curves in the drop-height scaled-down method was analyzed.The experimental results show that the parameters representing the main characteristics of natural circulation,such as natural circulation flow rate,Reynolds number,Grazoff number and modified Grazoff number,can keep the characteristic curves of natural circulation flow rate-heating power,Reynolds number-Grazoff number and Reynolds number-modified Grazoff number from being seriously distorted after being scaled down,and the fitting curves between the prototype and the model can form a one-to-one mapping.The characteristic curves of natural circulation can accurately reproduce the prototype law in the process of drop-height scaling.The reliability of dropheight scaling experiment simulating the natural circulation characteristic curves in the prototype is effectively verified.
作者
程诚
卢冬华
苏前华
张戈
Cheng Cheng;Lu Donghua;Su Qianhua;Zhang Ge(Guangdong Provincial Key Laboratory of Nuclear Power Safety,China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen,Guangdong,518000,China;School of Energy and Environment,Southeast University,Nanjing,210096,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2023年第6期119-126,共8页
Nuclear Power Engineering
关键词
自然循环
特性曲线
比例模化
H2TS
失真评价
Natural circulation
Characteristic curves
Scaling simulation
H2TS
Distortion evaluation
作者简介
程诚(1988-),男,高级工程师,主要从事核反应堆热工水力研究工作,E-mail:chegcheg@163.com;通讯作者:卢冬华,E-mail:ludonghua@cgnpc.com.cn。
