Jieyuan CHANG, Yibin LI, Wensheng MA, Renhui ZHANG, Xin LIU, Teng NIU. Influence of impeller top clearance structure on the wear characteristics of the impeller of an axial flow lead-bismuth pump[J]. NUCLEAR TECHNIQUES, 2023, 46(10): 100503
- NUCLEAR TECHNIQUES
- Vol. 46, Issue 10, 100503 (2023)
Fig. 1. Schematic diagram of 3D model of lead-bismuth axial flow pump
Fig. 2. Schematic diagram of the leaf top clearance structures(a) Plane, (b) Chamfering, (c) Rounding
Fig. 3. Schematic of domain grid
Fig. 4. Verification of the grid independence
Fig. 5. Workflow diagram of e xperimental setup
Fig. 6. Site photo of axial flow pump model for clean water test
Fig. 7. Model accuracy verification for axial lead-bismuth pump
Fig. 8. External characteristic curve
Fig. 9. Distribution curves of flow velocity on the pressure surface under different leaf top clearance structures(a) Wheel streamlines, (b) Median streamlines, (c) Flange streamlines
Fig. 10. Distribution curves of flow velocity on the suction surface under different leaf top clearance structures(a) Wheel streamlines, (b) Median streamlines, (c) Flange streamlines
Fig. 11. Cloud contour of impeller blade shear force distribution under different leaf top clearance structures(a) Impeller, (b) Plane, (c) Chamfering, (d) Rounding
Fig. 12. Shear curves on pressure surface under different leaf top clearance structures(a) Wheel streamlines, (b) Median streamlines, (c) Flange streamlines
Fig. 13. Shear curves on s uction surface under different leaf top clearance structures(a) Wheel streamlines, (b) Median streamlines, (c) Flange streamlines
Fig. 14. Cloud map of vortex distribution on leaf wheel pressure surface(a) Plane, (b) Chamfering, (c) Rounding
Fig. 15. Cloud contour of entropy yield on impeller blade wall(a) Impeller, (b) Plane, (c) Chamfering, (d) Rounding
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