Non-dimensional analysis of static bifurcation in a natural circulation loop

MISCELLANEOUS

Non-dimensional analysis of static bifurcation in a natural circulation loop

TONG Li-Li，

LI Tian-Shu，

LI Xiao-Yan

Nuclear Science and Techniques

Vol.17, No.1

pp.61-64

Published in print 20 Feb 2006

DOI：10.1016/S1001-8042(06)60013-4

CLC：TL33,TK12.

38500

The steady-state characteristics of a two-phase natural circulation loop were investigated based on the homogenous model. Transcendental equations of non-dimensional loop mass flow rate under various conditions were also derived. The static bifurcation diagram of a two-phase natural circulation described with non-dimensional variables N_pch-m⁺ was obtained. In addition, various steady-state characteristics of a natural circulation loop were analyzed and discussed. These characteristics include the existence of multiple solutions under certain conditions, and the maximum mass flow rate. The authors also examined the effects of important parameters such as sub-cooling number, riser-to-heated-region length ratio, and riser-to-heated-region diameter ratio.

Non-dimensional analysisTwo-phase natural circulationStatic bifurcation

References

[1]

Wallis G B, Heasley J H. J Heat Transfer, 1961, 83(3): 363-369

[2]

Ramos E, Sen M, Trevino C. Int. J. Heat Mass Transfer, 1985, 28: 1711-1719

[3]

Knaani A, Zvirin Y. Int. J. Multiphase Flow, 1993, 19: 1129-1151

[4]

Lee S Y, Lee D W. Nuclear Engineering and Design, 1991, 128: 317-330

[5]

Yao Wei, Kuang Bo, Xu Jijun.

Bifurcation phenomenon of two-phase natural circulation system

, Proc. of the Fourth International Symposiums on Multiphase Flow and Heat Transfer. Xi’an, China, 1999

Baidu Scholar

Google Scholar

[6]

Jeng H R, Pan Chin. Annals of Nuclear Energy, 1999, 26: 1227-1251