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The Influence of Matching Inducer and Impeller Blade Count on the Cavitation Performance of High-speed Centrifugal Pumps
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Xipu WANG1, Li FU1, 2, Pengxing LI1, 3
Missiles and Space Vehicles | 2026, 49(2) : 87 - 96
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Missiles and Space Vehicles | 2026, 49(2): 87-96
• Environment and Test •
The Influence of Matching Inducer and Impeller Blade Count on the Cavitation Performance of High-speed Centrifugal Pumps
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Xipu WANG1, Li FU1, 2, Pengxing LI1, 3
Affiliations
  • 1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, 730050
  • 2.Leo Group Zhejiang Pump Industry Co. , Ltd. , Taizhou, 318002
  • 3.Key Laboratory of Advanced Pumps, Valves and Fluid Control System of the Ministry of Education, Lanzhou University of Technology, Lanzhou, 730050
Published: 2026-04-25 doi: 10.7654/j.issn.2097-1974.20260211
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High-speed centrifugal pumps are widely used in industry and aerospace, and their performance is affected by the matching of the number of inducer and impeller blades. In order to study the effect of different matching relationships on the pump performance, numerical simulations based on the RNG k-ε model are carried out using ANSYS-CFX software, and the accuracy of numerical calculations is verified by external characteristic tests. By analyzing six matching relationships of inducer blades with 3 and 4, and impeller blades with 5, 6, and 7, the results indicate that when the number of impeller blades is fixed, the head is improved at small flow rates but reduced at large flow rates while increasing the number of inducer blades. Keeping the number of inducer blades unchanged, the head is improved while increasing the number of impeller blades, especially at large flow rates. Increasing the number of inducer blades expands the range of vacuole distribution, while changing the number of impeller blades has less effect on cavitation performance.

high speed centrifugal pump  /  inducer  /  cavitation  /  blade number  /  numerical simulation
Xipu WANG, Li FU, Pengxing LI. The Influence of Matching Inducer and Impeller Blade Count on the Cavitation Performance of High-speed Centrifugal Pumps[J]. Missiles and Space Vehicles, 2026 , 49 (2) : 87 -96 . DOI: 10.7654/j.issn.2097-1974.20260211
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Year 2026 volume 49 Issue 2
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Article Info
doi: 10.7654/j.issn.2097-1974.20260211
  • Receive Date：2024-12-27
  • Online Date：2026-05-12
  • Published：2026-04-25
Article Data
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History
  • Received：2024-12-27
  • Revised：2025-10-17
Affiliations
    1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, 730050
    2.Leo Group Zhejiang Pump Industry Co. , Ltd. , Taizhou, 318002
    3.Key Laboratory of Advanced Pumps, Valves and Fluid Control System of the Ministry of Education, Lanzhou University of Technology, Lanzhou, 730050
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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