Nonlinear Characteristics of Two-Phase Natural Circulation and Its Experimental Investigation

LIU Xiao-jing; KUANG Bo; CHEN Hong; XU Ji-yun; WANG Tao; SUN De-xiang; JIANG Xu-lun

Volume 27 Issue S1

Jun. 2006

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Article Navigation > Nuclear Power Engineering > 2006 > 27(S1): 91-98

LIU Xiao-jing, KUANG Bo, CHEN Hong, XU Ji-yun, WANG Tao, SUN De-xiang, JIANG Xu-lun. Nonlinear Characteristics of Two-Phase Natural Circulation and Its Experimental Investigation[J]. Nuclear Power Engineering, 2006, 27(S1): 91-98.

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Nonlinear Characteristics of Two-Phase Natural Circulation and Its Experimental Investigation

1. Department of Nuclear Science and System Engineering, Shanghai Jiaotong University, 200030, China;
2. Shandong Nuclear Power Co. Ltd, Yantai, Shandong, 264000, China;
3. National Key Laboratory of Bubble Physics & Natural Circulation, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2005-11-01
Rev Recd Date: 2006-01-10

Available Online: 2025-07-23

Publish Date: 2006-06-15

Abstract

Abstract

Based on experimental investigation and bifurcation analysis on two-phase natural circulation system,certain nonlinear mechanisms of the system,especially static bifurcation features and hysteresis effect,are verified and discussed in this paper.Study of time series of the dynamic parameters is carried out in both time and frequency domains,with boiling eruption induced relaxation instability mechanism under certain conditions being suggested and investigated.Further,through the phase space reconstruction of relating time series and fractal analysis,discussion to nonlinear evolution of the system with varying heating power is delivered.
- Two-phase natural circulation,
- Static bifurcation,
- Boiling eruption,
- Relaxation instability