排灌机械工程学报
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排灌机械工程学报  2010, Vol. 28 Issue (3): 242-246    DOI: 10.3969/j.issn.1674—8530.2010.03.014
泵站工程与给排水 最新目录 | 下期目录 | 过刊浏览 | 高级检索 Previous Articles  |  Next Articles  
泵站前池与进水池整流数值模拟
刘新阳1, 高传昌1, 石礼文2, 刘伟2
(1.华北水利水电学院 电力学院, 河南 郑州 450011; 2.田山电灌管理处, 山东 济南 250400)
Numerical simulation for fluid meliorating in both forebay and suction bay of pumping stations
Liu Xinyang1, Gao Chuanchang1, Shi Liwen2, Liu Wei2
(1.Institute of Electric Power, North China Institute of Water Conservancy and Hydroelectric Power, Zhengzhou, Henan 450011,China;  2.Tianshan Electric Irrigation Management Office, Jinan, Shandong 250400, China)
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摘要 针对田山一级泵站采用闸门控制前池与进水池水位形成了闸下射流的引水特点,提出了改善前池与进水池水流流态的整流工程措施.采用雷诺时均N-S方程,结合标准k-ε湍流模型,对整流前后的前池与进水池水流流态进行了数值模拟,计算中不考虑泥沙对水流运动的影响.结果表明,采用非连续底坎、非连续挑流坎与压水板等3种整流措施相结合的方式后,前池与进水池的闸底射流长度明显变短,表面回流基本消失,断面流速分布趋于均匀,且前池与进水池底部及水泵进口附近的流速明显减小.现场试验也表明,在实施整流措施后,在两种运行工况下,泵站装置效率分别提高了1.82%和5.96%,机组振动幅度分别下降了21和52 μm,且池内泥沙淤积基本消除.
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刘新阳
高传昌
石礼文
刘伟
关键词泵站   前池   进水池   水流流态   数值模拟     
Abstract: According to the jet feature under the sluice that formed by the water level difference in Tianshan first-stage pumping station, the efforts of fluid meliorating were put forward. The RANS equation and standard k-ε turbulence model were used to simulate the flow state, and the influence of sediment on he water flow was not taken into consideration during the simulating process. Due to the attempts of adopting discontinuous bottom sills, discontinuous trajectory sills and pressurized water board, the results show that the jet length is shorten significantly, the surface backflow disappears, the cross-section velocity distribution tends to uniform, and the velocity at the bottom of the forebay and suction bay and near the pump inlet decreases significantly. The field investigations show that the modifications adopted increase the device efficiency by 1.82% and 5.96% respectively. The vibration amplitude decreases 21 μm and 52 μm, and the sediment accumulation almost disappears in both operating conditions.
Key words pumping station   forebay   suction bay   water flow state   numerical simulation   
收稿日期: 2009-12-21; 出版日期: 2010-05-30
基金资助:

水利部公益性行业科研专项经费项目(200801011); 济南市科技攻关项目(061084)

通讯作者: 刘新阳(1979-),男,山东荣成人,讲师,博士(lxywd2008@126.com),主要从事流体机械及工程研究.    
作者简介: 高传昌(1957-),男,河北邯郸人,教授,博士(gcc@ncwu.edu.cn),主要从事流体机械及工程研究.
引用本文:   
刘新阳,高传昌,石礼文等. 泵站前池与进水池整流数值模拟[J]. 排灌机械工程学报, 2010, 28(3): 242-246.
LIU Xin-Yang,GAO Chuan-Chang,SHI Li-Wen et al. Numerical simulation for fluid meliorating in both forebay and suction bay of pumping stations[J]. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(3): 242-246.
 
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