| NUMERICAL SIMULATION AND ANALYSIS OF PRESSURE PULSATION IN FRANCIS HYDRAULIC TURBINE WITH AIR ADMISSION |
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| 作者姓名： | QIAN Zhong-dong YANG Jian-dong HUAI Wen-xin |
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| 作者单位： | QIAN Zhong-dong，YANG Jian-dong，HUAI Wen-xin State Key Laboratory of Water Resources and Hydropower Engineering Science，Wuhan University，Wuhan 430072，China |
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| 基金项目： | 国家自然科学基金;湖北省自然科学基金 |
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| 摘 要： | In this article, the three-dimensional unsteady multiphase flow is simulated in the whole passage of Francis hydraulic turbine. The pressure pulsation is predicted and compared with experimental data at positions in the draft tube, in front of runner, guide vanes and at the inlet of the spiral case. The relationship between pressure pulsation in the whole passage and air admission is analyzed. The computational results show: air admission from spindle hole decreases the pressure difference in the horizontal section of draft tube, which in turn decreases the amplitude of low-frequency pressure pulsation in the draft tube; the rotor-stator interaction between the air inlet and the runner increases the blade-frequency pressure pulsation in front of the runner.
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| 关 键 词： | 数字模拟 压力脉动 水力涡轮机 进气口 |
| 收稿时间： | 7 August 2006 |
| 修稿时间： | 2006-08-07 |
NUMERICAL SIMULATION AND ANALYSIS OF PRESSURE PULSATION IN FRANCIS HYDRAULIC TURBINE WITH AIR ADMISSION |
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| QIAN Zhong-dong YANG Jian-dong HUAI Wen-xin.NUMERICAL SIMULATION AND ANALYSIS OF PRESSURE PULSATION IN FRANCIS HYDRAULIC TURBINE WITH AIR ADMISSION[J].Journal of Hydrodynamics,2007,19(4):467-472. |
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| Authors: | QIAN Zhong-dong YANG Jian-dong HUAI Wen-xin |
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| Affiliation: | 1. State Key Laboratory of Hydroscience and Engineering & Department of Thermal Engineering, Tsinghua University, Beijing 100084, China;2. China Guodian Corporation, Beijing 100034, China;3. Jiangxia Pilot Tidal Power Station, Wenling, Zhejiang 317528, China;1. TOBB ETU Hydro Energy Research Center, TOBB University of Economics and Technology, Ankara, Turkey;2. Department of Mechanical Engineering, TOBB University of Economics and Technology, Ankara, Turkey;1. Flow Informatics Lab, Department of Mechanical & Energy System Engineering, Korea Maritime & Ocean University, Busan, South Korea;2. Department of Mechanical Engineering, School of Engineering, Kathmandu University, Dhulikhel, Nepal;3. Department of Mechanical and Energy System Engineering, Korea Maritime & Ocean University, 606-791 Busan, South Korea;1. Siberian Federal University, Krasnoyarsk, Russian Federation;2. Institute of Thermophysics SB RAS, Novosibirsk, Russian Federation;3. OJSC “Power Machines” (LMZ), St. Petersburg, Russian Federation |
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| Abstract: | In this article, the three-dimensional unsteady multiphase flow is simulated in the whole passage of Francis hydraulic turbine. The pressure pulsation is predicted and compared with experimental data at positions in the draft tube, in front of runner, guide vanes and at the inlet of the spiral case. The relationship between pressure pulsation in the whole passage and air admission is analyzed. The computational results show: air admission from spindle hole decreases the pressure difference in the horizontal section of draft tube, which in turn decreases the amplitude of low-frequency pressure pulsation in the draft tube; the rotor-stator interaction between the air inlet and the runner increases the blade-frequency pressure pulsation in front of the runner. |
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| Keywords: | Francis hydraulic turbine air admission pressure pulsation numerical simulation |
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