Internal and external characteristics of axial-flow pump based on coupling CFX with Workbench
Dong Xinghua1, Guo Yanlei2, Bi Zhen2, Li Yibin2, Cheng Xiaorui2
1. Ebara Machinery(China)Co.Ltd., Yan Tai, Shan Dong 265500, China; 2. School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
Abstract：To study the effects of coupling on the internal and external characteristics of the large submersible axial flow pump, the method of coupling CFX with Workbench was adopted to calculate the rotor components of pump in two-way coupling. The external characteristic and pressure fluctuation of large submersible axial flow pump in consideration of coupling effects or not were computed. Then the effects of coupling on macroscopic external characteristic and microscopic pressure fluctuation were ana-lyzed. Compared to those not by the coupling effects, both the efficiency and head by the coupling effects decrease by 1% or so. At the same time, the coupling effects could influence pressure fluctuation in the pump. To this pump, the coupling effects make no difference to the variation trend of pressure fluctuation. However, the amplitude corresponding to different frequencies would increase slightly. The closer the monitoring point is to the tip of impeller inlet, where the maximum deformation exists, the larger the amplitude of pressure fluctuation increase is;on the contrary, it is smaller.
董兴华, 郭艳磊, 毕祯, 黎义斌, 程效锐. 基于CFX与Workbench耦合的轴流泵的内外特性[J]. 排灌机械工程学报, 2015, 33(6): 488-493.
Dong Xinghua, Guo Yanlei, Bi Zhen, Li Yibin, Cheng Xiaorui. Internal and external characteristics of axial-flow pump based on coupling CFX with Workbench. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(6): 488-493.
[1]钱若军,董石麟,袁行飞. 流固耦合理论研究进展[J].空间结构,2008,14(1):3-14. Qian Ruojun, Dong Shilin, Yuan Xingfei.Advances in research on fluid-structure interaction theory[J]. Spatial Structures,2008 14(1):3-14.(in Chinese)[2]陈汇龙,刘玉辉,赵斌娟,等.基于流固耦合上游泵送机械密封的变形分析[J].江苏大学学报:自然科学版,2014,35(1):25-28. Chen Huilong,Liu Yuhui,Zhao Binjuan,et al.Deformation analysis of upseream pumping mechanical seals based on one-way fluid-solid coupling[J].Journal of Jiangsu University:Natural Science Edition,2014,35(1):25-28.(in Chinese)[3]曹良. 混流式水轮机流固耦合振动分析[D].昆明:昆明理工大学建筑工程学院,2007.[4]肖若富,朱文若,杨魏. 基于双向流固耦合水轮机转轮应力特性分析[J]. 排灌机械工程学报,2013,31(10):862-866. Xiao Ruofu,Zhu Wenruo,Yang Wei. Stress analysis to mixed-flow water turbine based on two-way coupling[J]. Journal of Drainage and Irrigation Machinery Engineering,2013,31(10):862-866.(in Chinese)[5]肖若富,王正伟,罗永要. 基于流固耦合的混流式水轮机应力特性分析[J].水力发电学报,2007,26(3):120-123. Xiao Ruofu, Wang Zhengwei, Luo Yongyao. Stress analysis to mixed-flow water turbine based on FSI[J].Journal of Hydroelectric Engineering, 2007,26(3):120-123.(in Chinese)[6]Rodriguez C G,Equsquiza E,Escaler X,et al.Experimental investigation of added mass effects on a Francis turbine runner in still water[J].Journal of Fluids and Structures,2006, 22(5):699-712.[7]梁权伟,王正伟,方源.考虑流固耦合的混流式水轮机转轮模态分析[J].水力发电学报,2004,23(3):116-120. Liang Quanwei, Wang Zhengwei, Fang Yuan. Mode analysis to mixed-flow water turbine based on FSI[J]. Journal of Hydroelectric Engineering,2004,23(3):116-120.(in Chinese)[8]张恒峰.基于流固耦合的离心泵动力学数值模拟[D]. 大连:大连交通大学机械工程学院,2012.[9]刘厚林,徐欢,吴贤芳. 流固耦合作用对离心泵内外特性的影响[J].农业工程学报,2012,28(13):82-87. Liu Houlin, Xu Huan, Wu Xianfang. Influence of FSI on internal and external characteristic of centrifugal pump [J].Transactions of the CSAE,2012,28(13):82-87.(in Chinese)[10]施卫东,王国涛,张德胜.基于流固耦合的轴流泵叶片应力特性研究[J]. 排灌机械工程学报,2013,31(9):737-740. Shi Weidong,Wang Guotao,Zhang Desheng. Stress characteristics in blades of axial flow pump based on fluid solid interaction[J].Journal of Drainage and Irrigation Machinery Engineering,2013,31(9):737-740.(in Chinese)[11]裴吉,袁寿其,袁建平.流固耦合作用对离心泵内部流场影响的数值计算[J].农业机械学报,2009,40(12):107-112. Pei Ji, Yuan Shouqi, Yuan Jianping. Simulation to influence of FSI on internal characteristic of centrifugal pump [J].Transactions of the Chinese Society for Agricultural Machinery, 2009,40(12):107-112.(in Chinese)[12]程效锐,李仁年. 背叶片对固液两相螺旋离心泵轴向力与流场的影响[J]. 兰州理工大学学报,2013,39(4):29-34. Cheng Xiaorui, Li Rennian. Influence of screw centrifugal pump for black-blade on axial force and flow field based on the solid-liquid two phase medium [J].Journal of Lanzhou University of Technology,2013,39(4):29-34.(in Chinese)[13]丘传忻. 大型潜水电泵应用概述及发展前景[J]. 中国农村水利水电,1999(6):15-17. Qiu Chuanxin. Application overview and development prospect of large submersible pump[J]. China Rural Water and Hydropower, 1999(6): 15-17.(in Chinese)
