Numerical Simulation and Safety analysis on Flow Field of a 1000 MW Unit Nuclear reactor pressure vessel
The flow field of a 1000 MW unit nuclear reactor pressure vessel operation process was numerically studied with realizable k-e model, the reactor normal operating, circuit fault and isolation layer being plug conditions were studied. The different reactor flow characteristics between normal operating and two fault conditions were compared. The numerical simulation results show as follows, The core inlet flow distribution is certain heterogeneity during normal operation, flow velocity are fast in the core inlet middle and surrounding area, The core inlet annular channel blocking zone has a certain regulation to the flow distribution, Increasing flow resistance coefficient, Core inlet flow is more evenly; in circuit fault condition, Other loop currents can add flow to the loop; reduce flow resistance coefficient, Core inlet flow is more evenly, too large resistance coefficient can enlarge heterogeneity flow distribution, The numerical simulation results provide a theoretical basis to judge flow field when circuit fault and isolation layer being plug conditions,it can also provide some theoretical basis for the nuclear reactor pressure vessel operation.
circuit fault circuit isolation layer flow field numerical simulation realizable k-ε model
LIU Jian-quan HU Yong-sheng SUN Bao-min BAI Too
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment North China Electric Power University Beijing, China
国际会议
吉林
英文
1576-1579
2011-11-04（万方平台首次上网日期，不代表论文的发表时间）