并联双通道密度波不稳定性理论研究

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Theoretic Study on Density Wave Oscillation in Two Parallel Channels

1. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power Institute of China, Chengdu, 610041, China;
2. China Guangdong Nuclear Power Group, Shenzhen, Guangdong, 518026, China

摘要: 采用频域法对并联双通道密度波不稳定进行理论研究,建立密度波不稳定分析模型,对热工参数及进、出口阻力系数对密度波不稳定的影响进行理论分析。结果表明,在一定参数范围内,且其他热工参数不变的情况下,增加系统压力、质量流速或入口过冷度,系统稳定性增强;增大入口阻力,系统稳定性增强,增大出口阻力,系统稳定性减弱。
- 并联双通道 /
- 密度波不稳定 /
- 热工水力 /
- 频域法
Abstract: In the present paper,a linear analysis of Density Wave Oscillation（DWO） in two parallel channels using a lumped parameter model is established.The effect of some thermal-hydraulic parameters,such as system pressure,mass flow velocity and inlet subcooling,on DWO is theoretically analyzed.The results show that within a certain range and with constant thermal data,the increasing of the system pressure,mass flow velocity or inlet subcooling enhances the system stability,and the increasing of inlet resistance can also improve the system stability,but the increasing of outlet resistance will impair the system stability.
- Two parallel channel /
- Density wave oscillation /
- Thermal-hydraulics /
- Frequency domain