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CFD-DEM investigation on particle erosion characteristics of shaftless rim-driven thruster in sediment-laden flow
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Nan Wanga, Zhentao Wanga, b, *, Bin Lia, Qingming Donga, Junfeng Wanga, c, Jiyuan Tub, d
Particuology | 2026, 115 : 157 - 173
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Particuology | 2026, 115: 157-173
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CFD-DEM investigation on particle erosion characteristics of shaftless rim-driven thruster in sediment-laden flow
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Nan Wanga, Zhentao Wanga, b, *, Bin Lia, Qingming Donga, Junfeng Wanga, c, Jiyuan Tub, d
Affiliations
  • aSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China
  • bKey Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Tsinghua University, Beijing, 100084, China
  • cSchool of Energy and Power Engineering, Chongqing University, Chongqing, 400044, China
  • dSchool of Engineering, RMIT University, Victoria, 3083, Australia
Published: 2026-08-10 doi: 10.1016/j.partic.2026.05.012
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This study investigates particles erosion characteristics of shaftless rim-driven thrusters (RDTs) adopting CFD-DEM method. A three-dimensional RDTs model was developed to evaluate the effect of particles size, shape, and flow rate on erosion pattern and hydrodynamic performance. The results indicate that larger particles could induce severe localized erosion at blade leading edge owing to the higher inertia, whereas smaller particles generate more uniform but milder wear. Mixed particles distribution can produce combined effect, resembling actual sediment-laden environments. Moreover, blade number and hub-to-tip ratio also markedly influence erosion. The fewer blades and smaller r/R values lead to concentrated erosion, and increasing blade number and r/R enhances flow uniformity and reduces wear. The comparison between spherical and irregular (barley-shaped) particles reveal that irregular morphology causes stronger localized erosion and greater efficiency losses. In addition, higher particle mass flow rate intensifies erosion, expanding the affected regions from localized hotspots to entire blade surfaces.

CFD-DEM method  /  Particle erosion  /  Shaftless rim-driven thruster  /  Hydrodynamic performance  /  Multiphase flow
Nan Wang, Zhentao Wang, Bin Li, Qingming Dong, Junfeng Wang, Jiyuan Tu. CFD-DEM investigation on particle erosion characteristics of shaftless rim-driven thruster in sediment-laden flow[J]. Particuology, 2026 , 115 : 157 -173 . DOI: 10.1016/j.partic.2026.05.012
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Funding
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  • National Natural Science Foundation of China(52076105; 52206199)
  • Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education(ARES-2025-01)
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Year 2026 volume 115 Issue 0
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73
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Article Info
doi: 10.1016/j.partic.2026.05.012
  • Receive Date：2026-03-12
  • Online Date：2026-08-20
  • Published：2026-08-10
Article Data
Affiliations
History
  • Received：2026-03-12
  • Revised：2026-05-08
  • Accepted：2026-05-15
Funding
National Natural Science Foundation of China(52076105; 52206199)
Key Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education(ARES-2025-01)
Affiliations
    aSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, China
    bKey Laboratory of Advanced Reactor Engineering and Safety, Ministry of Education, Tsinghua University, Beijing, 100084, China
    cSchool of Energy and Power Engineering, Chongqing University, Chongqing, 400044, China
    dSchool of Engineering, RMIT University, Victoria, 3083, Australia

Corresponding:

* School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China. E-mail address: (Z. Wang).
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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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