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Effect of Rolling Motion on Flow Instability of Parallel Rectangular Channels of Natural Circulation

[+] Author Affiliations
Xiaoyan Wang, Siyang Huang, Wenxi Tian, Lie Chen, Suizheng Qiu, G. H. Su

Xi'an Jiaotong University, Xi'an, China

Paper No. ICONE26-81849, pp. V005T07A007; 6 pages
doi:10.1115/ICONE26-81849
From:
  • 2018 26th International Conference on Nuclear Engineering
  • Volume 5: Advanced Reactors and Fusion Technologies; Codes, Standards, Licensing, and Regulatory Issues
  • London, England, July 22–26, 2018
  • Conference Sponsors: Nuclear Engineering Division
  • ISBN: 978-0-7918-5147-0
  • Copyright © 2018 by ASME

abstract

In order to study the effect of rolling motion on flow instability of parallel rectangular channels of natural circulation, the natural circulation reactor simulation system is used for physical prototype. And theory analysis model of parallel rectangular channels of natural circulation system under rolling motion is established and coded by Fortran. The results of the program are verified to the experiments, and the results are in good agreement. The flow instability boundaries of different pressure under static and rolling motion are calculated respectively. The results show that: 1) under static condition, with the increase of the pressure, the instability boundary line changes, and the system becomes more stable; 2) under rolling conditions, the heating power of instability boundary decreases comparing to the stable conditions. The instability occurs earlier; 3) the stability of the system decreases with the increasing of rolling amplitude and frequency.

Copyright © 2018 by ASME

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