摇摆运动对自然循环流动不稳定性的影响

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基金项目:

中国博士后科学基金资助(20060401002)

哈尔滨工程大学基础研究基金资助(HEUFT06039)

Effect of Rolling Motion on Flow Instability of Natural Circulation

1. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, 710049, China;
2. College of Nuclear Science and Technology, Harbin Engineering University, 150001, China;
3. Bohai Shipbuiding Heavy Industry Co. Ltd, Liaoning, 125004, China

摘要: 分析研究了摇摆运动下的自然循环流动不稳定性和摇摆对不稳定性的类型以及不稳定性起始点的影响。结果表明,摇摆使流动不稳定性提前发生,改变了不稳定性的类型,摇摆引起的波动和密度波型脉动发生叠加。摇摆运动下自然循环存在两个稳定区域,在这两个区域中间包含着不稳定区域。
- 摇摆 /
- 自然循环 /
- 流动不稳定性
Abstract: Flow instability of natural circulation under rolling motion condition was studied experimentally in this paper.The results showed that the rolling motion might cause the early occurrence of the OFI of natural circulation and changed the types of flow instability.Flow oscillation caused by the rolling motion might overlap with the density wave oscillation.The system stability decreased with the increasing of the rolling amplitude and frequency.There were two stable regions under rolling motion condition,between which there is an unstable region.
- Rolling motion /
- Natural circulation /
- Flow instability