Theoretical research on effect of heaving condition on flow instability in parallel channels based on Galerkin nodal method

被引：0

作者：

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu ^{[1
]}

610041, China

机构：

[1] Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu

来源：

Hedongli Gongcheng | / 102-107期

关键词：

Flow instability; Heaving condition; Parallel channel;

D O I：

10.13832/j.jnpe.2015.S2.0102

中图分类号：

学科分类号：

摘要：

The lumped model of flow instability in parallel-rectangular channels under heaving condition based on Galerkin nodal method is built, in which the model of flow instability under static condition and the additional pressure drop generated by heaving condition is included and the effect of heaving condition on flow instability is analyzed theoretically in the present work. The results show that the amplitude of heaving condition has little effect on the flow instability; when the frequency of heaving condition is much larger or smaller than the system inherent frequency, the frequency has little effect on the threshold power, while when two of them are more or less the same, the threshold power will decrease. And when the system suffers asymmetric condition, the effect of heaving condition will increase significantly. © 2015, Editorial Office of Nuclear Power Engineering. All right reserved.

引用

页码：102 / 107

页数：5

共 3 条

[1] Munoz-Cobo J.L., Podowski M.Z., Chiva S., Parallel channel instabilities in boiling water reactor systems: Boundary conditions for out of phase oscillations, Annals of Nuclear Energy, 29, 16, pp. 1891-1917, (2002)
[2] Tang Y., Chen B., Xiong W., Et al., Comparison of flow instabilities under static condition and marine motion conditions based on experiments, Annals of Nuclear Energy, 70, 3, pp. 11-20, (2014)
[3] Guo Y., Huang J., Xia G., Et al., Experiment investigation on two-phase flow instability in a parallel twin-channel system, Annals of Nuclear Energy, 37, 10, pp. 1281-1289, (2010)

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