Pengcheng GAO, Bin ZHANG, Hao YANG, Jianqiang SHAN. Development of flow blockage model for core heat transfer and its application in QUENCH experiment[J]. NUCLEAR TECHNIQUES, 2023, 46(7): 070606
- NUCLEAR TECHNIQUES
- Vol. 46, Issue 7, 070606 (2023)
Fig. 1. Illustration of fuel claddings after a LOCA simulation during a PHEBUS-LOCA experiment
Fig. 2. Heat and mass transfer phenomena during LOCA with ballooning of fuel claddings
Fig. 3. Flow chart of ISAA-FRTMB coupling interface
Fig. 4. Illustration of flow blockage model (a) The top view of the fuel assembly, (b) The front view of the fuel assembly
Fig. 5. Diagram of QUENCH test facility
Fig. 6. Diagram of test bundle cross-section
Fig. 7. Sketch map of node division of QUENCH experimental device
Fig. 8. Bundle heating power and steam flow ratio
Fig. 9. Cladding temperature variation at axial elevations of 950 mm, 750 mm, 550 mm, and 450 mm
Fig. 10. Channel blockage rate at 950 mm axial elevation
Fig. 11. Blockage rate of coolant channel at different radial rings
Fig. 12. Comparison of experimental and simulated values of cladding hoop strain and temperature for rod #4
Fig. 13. Cladding hoop strain at 950 mm axial elevation
Fig. 14. Internal pressure values of test rods
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Table 1. Events and phases of the QUENCH-L0
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Table 2. Cladding burst
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