Nonlinear analysis for a nuclear-coupled two-phase natural circulation loop

被引：41
|
作者：
Lee, JD
Pan, C
机构：
[1] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu 30043, Taiwan
[2] Chin Min Inst Technol, Dept Elect Engn, Toufen 351, Taiwan
来源：
NUCLEAR ENGINEERING AND DESIGN | 2005年 / 235卷 / 05期
关键词：
D O I：
10.1016/j.nucengdes.2004.09.008
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The objective of this paper is to develop a nonlinear numerical model to investigate the stability and nonlinear dynamics of a nuclear-coupled two-phase natural circulation loop. Some stability maps, parametric effects and transient characteristics of this natural circulation loop have been studied. Results indicate that the system indeed has two instability regions, the type-I and type-II instabilities, as is well known for a natural circulation loop. Parameters may induce different effects on the system stability in type-I and type-II unstable regions. In particular, the void-reactivity feedback destabilizes the system in both regions of low and high operating powers. Moreover, by strengthening nuclear feedback effect, period-doubled bifurcation may prevail in the system at relatively high inlet subcoolings and eventually a chaotic attractor appears with a fractal dimension of 1.79 +/- 0.01 and an embedding dimension of 5. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：613 / 626
页数：14
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