Research on Out-of-Phase Oscillation in a Nuclear-Coupled Parallel Double-Channel Boiling System

ZHOU Ling-lan; ZHANG Hong; ZANG Xi-nian; LIU Yu

Mar. 2025

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ZHOU Ling-lan, ZHANG Hong, ZANG Xi-nian, LIU Yu. Research on Out-of-Phase Oscillation in a Nuclear-Coupled Parallel Double-Channel Boiling System[J]. Nuclear Power Engineering, 2011, 32(6): 66-70.

Citation:

ZHOU Ling-lan, ZHANG Hong, ZANG Xi-nian, LIU Yu. Research on Out-of-Phase Oscillation in a Nuclear-Coupled Parallel Double-Channel Boiling System[J]. Nuclear Power Engineering, 2011, 32(6): 66-70.

ZHOU Ling-lan, ZHANG Hong, ZANG Xi-nian, LIU Yu. Research on Out-of-Phase Oscillation in a Nuclear-Coupled Parallel Double-Channel Boiling System[J]. Nuclear Power Engineering, 2011, 32(6): 66-70.

Citation:

ZHOU Ling-lan, ZHANG Hong, ZANG Xi-nian, LIU Yu. Research on Out-of-Phase Oscillation in a Nuclear-Coupled Parallel Double-Channel Boiling System[J]. Nuclear Power Engineering, 2011, 32(6): 66-70.

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Research on Out-of-Phase Oscillation in a Nuclear-Coupled Parallel Double-Channel Boiling System

1. Department of Engineering Physics, Tsinghua University, Beijing, 100084, China;
2. Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

Received Date: 2010-07-30
Rev Recd Date: 2011-05-13

Available Online: 2025-03-08

Abstract

Abstract

In this paper,the RELAP5 thermal-hydraulic system code is coupled with the TDOT-T 3D neutron kinetic code by PVM（Parallel Virtual Machine）.A parallel double-channel boiling system is built by the coupled code and the instability boundary of out-of-phase oscillation in the system is obtained.The effects of axis power distribution and neutron feedback on the out-of-phase oscillation are analyzed in details.It is found that there are type-I and type-II density wave oscillation regions when the axial power peak is located at upstream of the heating section.At relatively lower values of fuel time constant,the neutron feedback always delays both types of density wave oscillations.
- RELAP5/TDOT-T,
- Parallel channels,
- Out-of-phase oscillation