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Characteristics of Flow Field in a Double-layer Three-arc Blade Propeller Kettle with Baffle
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Xianjun LU1, Jiabao XU1, Ziqiang XU1, Lanlan TAO2, Yongjun ZHOU1
Hydrometallurgy of China | 2025, 44(2) : 256 - 263
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Hydrometallurgy of China | 2025, 44(2): 256-263
• Experiment Research •
Characteristics of Flow Field in a Double-layer Three-arc Blade Propeller Kettle with Baffle
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Xianjun LU1, Jiabao XU1, Ziqiang XU1, Lanlan TAO2, Yongjun ZHOU1
Affiliations
  • 1 College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China
  • 2 National Quality Supervision & Inspection Center of Chemical Equipment, Special Equipment Safety Supervision Inspection Institute of Jiangsu Province, Suzhou 215600, China
Published: 2025-04-28 doi: 10.13355/j.cnki.sfyj.2025.02.015
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The effects of the changes of speed (N), distance (C1) from the bottom and pitch (C2) of the double-layer baffle three-arc blade composite paddle on the flow field in the stirring tank using particle image velocimetry (PIV) were studied. The flow field characteristics of the double-layer baffle three-arc blade propeller and the double-layer baffle-free three-arc blade propeller were simulated and compared. The results show that when the rotation speed N=110 r/min, the velocity distribution of the flow field in the kettle is relatively uniform, and the high-speed zone in the kettle is concentrated near the propellers. When C2=0.27h(h is the liquid level height of the stirred tank), the connection flow between the propellers is stable, and the overall mixing capacity in the kettle is significantly enhanced. When C1=0.29h, the area of the low-velocity zone in the kettle is greatly reduced. The baffle of the double-layer baffle three-arc blade propeller limits its radial pushing capacity, but the axial pushing capacity is significantly enhanced. The research results can provide a reference for the application of double-layer baffle three-arc blade propeller in practical industry.

stirred tank  /  double-deck three-arc blade paddle with baffle  /  stirring kettle  /  PIV  /  CFD
Xianjun LU, Jiabao XU, Ziqiang XU, Lanlan TAO, Yongjun ZHOU. Characteristics of Flow Field in a Double-layer Three-arc Blade Propeller Kettle with Baffle[J]. Hydrometallurgy of China, 2025 , 44 (2) : 256 -263 . DOI: 10.13355/j.cnki.sfyj.2025.02.015
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Year 2025 volume 44 Issue 2
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Article Info
doi: 10.13355/j.cnki.sfyj.2025.02.015
  • Receive Date：2024-10-15
  • Online Date：2025-08-08
  • Published：2025-04-28
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  • Received：2024-10-15
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Affiliations
    1 College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing 211816, China
    2 National Quality Supervision & Inspection Center of Chemical Equipment, Special Equipment Safety Supervision Inspection Institute of Jiangsu Province, Suzhou 215600, China
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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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