排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2012, Vol. 30 Issue (2): 219-224    DOI: 10.3969/j.issn.1674-8530.2012.02.019
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simulation and transient model for regulating period of gate valve
 TANG  Yue, TANG  Ling-Di, LIU  erHui
(Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China)
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Abstract To investigate the transient characteristics and internal flow in the pipeline of pump system during regulating period of a valve, a onedimensional simulation model which contains the pipes, pump and valves etc has been established by software Flowmaster. CFD code Fluent 6.2 was used to solve the incompressible threedimensional transient turbulent N-S equations with the dynamic mesh method to deal with the moving boundary caused by the opening valve core. The simulation results show that the valves with linear and logarithmic regulating characteristic have a fast opening feature which means the flow rate is very sensitive to the valve opening degree, in addition the water hammer pressure falls down promptly when the relative opening degree is in the range of 10% to 20%. As the valve relative opening degree is reduced, the flow behind the valve becomes disorder, leading to great hydraulic losses and considerable drag coefficient. For instance, the drag coefficient of valve under transient period shows great difference from that under static condition when the relative opening degree is less than 0.5. These analyses show that the transient behavior and unsteady internal flow pattern cannot be handled by the existing usual analytical steady flow models during regulating period of a valve, especially at a relatively small opening degree. In that case, the steady flow models are subject to be amended in some degree to allow them to provide correct computational results.
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TANG Yue
TANG Ling-Di
LIU 二Hui
Key wordsvalve regulating   simulation model   dynamic characteristics   resistance coefficient   numerical simulation     
Received: 2011-06-16; Published: 2012-03-30
Cite this article:   
TANG Yue,TANG Ling-Di,LIU 二Hui. simulation and transient model for regulating period of gate valve[J]. Journal of Drainage and Irrigation Machinery Engin, 2012, 30(2): 219-224.
 
[1] 参考文献(References)
[2] 刘刚,方金春,雍歧卫.调节阀动态特性的数值模拟[J].阀门,2004(4):8-10,14.
[3] Liu Gang, Fang Jinchun, Yong Qiwei. The numerical simulation of the regulate valve′s dynamic characteristics in long pipeline[J]. Valve, 2004(4):8-10,14.(in Chinese)
[4] Choi Jong Won, Lee Gilbong, Kim Min Soo. Numerical study on the steady state and transient performance of a multitype heat pump system[J]. International Journal of Refrigeration, 2011,34(2):429-443.
[5] Tanaka T, Tsukamoto H. Transient behavior of a cavitating centrifugal pump at rapid change in operating conditions—Part 1: Transient phenomena at opening/closure of discharge valve[J]. Journal of Fluids Engineering, 1999,121(4):841-849.
[6] 黄建军,郑源,张盾. 泵闸结构流场的水力特性[J]. 排灌机械工程学报, 2010,28(2):149-154.
Huang Jianjun, Zheng Yuan, Zhang Dun. Hydraulic Characteristics of flow field in pump and sluice gate[J]. Journal of Drainage and Irrigation Machinery Engineering, 2010,28(2):149-154.(in Chinese)
[7] 陆培文. 阀门设计入门与精通[M]. 北京:机械工业出版社, 2009.
[8] Farhadi Kazem, Bousbiasalah Anis, D′Auria Franscesco. A model for the analysis of pump startup transients in Tehran Research Reactor[J]. Progress in Nuclear Energy, 2007,49(7):499-510.
[9] Koobus B, Farhat C. Secondorder timeaccurate and geometrically conservative implicit schemes for flow computations on unstructured dynamic meshes[J]. Computer Methods in Applied Mechanics and Engineering, 1999,170(1/2):103-129.
[10] 李志锋. 离心泵启动过程瞬态流动的数值模拟和实验研究[D]. 杭州:浙江大学化学工程与生物工程学系, 2009.
[11] 李志峰, 吴大转, 王乐勤. 基于动网格方法的圆柱启动瞬态流动数值模拟[J]. 浙江大学学报:工学版, 2008,42(2):264-268.
Li Zhifeng, Wu Dazhuan, Wang Leqin. Numerical simulation of transient flow past impulsively started circular cylinder based on dynamic mesh method[J]. Journal of Zhejiang University: Engineering Science, 2008,42(2):264-268.(in Chinese)
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