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Research on Internal Flow Characteristic of Fixed Guide Blade and Variable Paddle of Bulb Tubular Turbine Based on CFD
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Tong GUO1, 2, Zhen-wei MU1, 2, Qing-cheng XIA1, 2, Xin-wei GUI1, 2, Ze-fa LI1, 2
Water Resources and Power | 2023, 41(6) : 171 - 174
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Water Resources and Power | 2023, 41(6): 171-174
• ELECTROMECHANICS AND CONTROL ENGINEERING •
Research on Internal Flow Characteristic of Fixed Guide Blade and Variable Paddle of Bulb Tubular Turbine Based on CFD
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Tong GUO1, 2, Zhen-wei MU1, 2, Qing-cheng XIA1, 2, Xin-wei GUI1, 2, Ze-fa LI1, 2
Affiliations
  • 1.School of Water Resources and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
  • 2.Xinjiang Key Laboratory of Water Resources Engineering Safety and Water Disaster Prevention, Urumqi 830052, China
Published: 2023-06-25 doi: 10.20040/j.cnki.1000-7709.2023.20221705
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To study the internal flow characteristics of bulb tubular turbine with different blade opening structures under large medium and small flow conditions, and to make theoretical support for the optimization of the flow passage components structure and the coordinated relationship, the research indexes were taken as three-dimensional streamline distribution, central meridian plane streamline distribution and central meridian plane pressure distribution. The results indicated that the maximum flow velocity existed at the runner of the bulb tubular turbine in the flow pattern analysis, and the flow pattern was chaotic, which was the focus of efficiency optimization. The reason of vortex in the draft tube was analyzed, and it could be optimized by reducing the dead water area. The internal pressure showed an overall decline tendency from the inlet channel to the draft tube. The pressure value at the runner discharge cone was the smallest. The pressure in the draft tube gradually increased along the flow direction, and the highest pressure value was 82 464.15 Pa when the flow rate reached 124.92 m3/s. The calculation results can provide a reference basis for the modification and optimization of the bulb tubular turbine.

bulb tubular turbine  /  fixed guide blade and variable paddle  /  internal flow characteristics  /  numerical simulation
Tong GUO, Zhen-wei MU, Qing-cheng XIA, Xin-wei GUI, Ze-fa LI. Research on Internal Flow Characteristic of Fixed Guide Blade and Variable Paddle of Bulb Tubular Turbine Based on CFD[J]. Water Resources and Power, 2023 , 41 (6) : 171 -174 . DOI: 10.20040/j.cnki.1000-7709.2023.20221705
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20221705
  • Receive Date：2022-07-11
  • Online Date：2026-01-28
  • Published：2023-06-25
Article Data
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History
  • Received：2022-07-11
  • Revised：2022-08-31
Affiliations
    1.School of Water Resources and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    2.Xinjiang Key Laboratory of Water Resources Engineering Safety and Water Disaster Prevention, Urumqi 830052, 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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