转速影响的航空旋涡泵性能试验与数值研究
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摘要
为获得航空旋涡泵转速调整对设计性能的影响情况,利用高扬程自吸旋涡泵试验台及测量条件,开展不同转速工况下旋涡泵性能试验研究;利用计算流体力学仿真软件进行旋涡泵内部流场三维仿真计算,获得其内部流场特性,并开展了流动对输出性能影响的机理分析。通过对比旋涡泵输出扬程的试验与数值模拟结果,得到以下结论:航空旋涡泵扬程随吸入流量的增加而逐渐减小;在小流量情况下,泵效率随吸入流量的增加而提高;在大流量情况下,试验测量得到的泵效率表现为下降特征,而数值计算相反;泵轴功率随吸入流量的增加而逐渐减小。
In order to understand the influence of rotation rate adjustment of aeronautical vortex pump on the design performance, the experimental study of vortex pump performance under the condition of different rotation rates was carried out based on the establishment of experimental platform and measuring condition of high lift self-suction vortex pump. At the same time, three-dimensional simulation of internal flow field of vortex pump was carried out by using computational fluid dynamics simulation software, and the analysis of internal flow field characteristics of aeronautical vortex pump were obtained. By comparing experimental results with numerical simulation results, it is shown that the lift of aeronautical vortex pump decreases gradually with the increase of the suction flow rate at different rotation rates. For small flow rate, the pump efficiency increases with the increase of suction flow rate; however, for large flow rate, the efficiency of pump is characterized by decreasing performance; while the results from numerical calculation is opposite, the pump shaft power decreases with the increase of the suction flow suction.
In order to understand the influence of rotation rate adjustment of aeronautical vortex pump on the design performance, the experimental study of vortex pump performance under the condition of different rotation rates was carried out based on the establishment of experimental platform and measuring condition of high lift self-suction vortex pump. At the same time, three-dimensional simulation of internal flow field of vortex pump was carried out by using computational fluid dynamics simulation software, and the analysis of internal flow field characteristics of aeronautical vortex pump were obtained. By comparing experimental results with numerical simulation results, it is shown that the lift of aeronautical vortex pump decreases gradually with the increase of the suction flow rate at different rotation rates. For small flow rate, the pump efficiency increases with the increase of suction flow rate; however, for large flow rate, the efficiency of pump is characterized by decreasing performance; while the results from numerical calculation is opposite, the pump shaft power decreases with the increase of the suction flow suction.
引文
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[3] Song J W,Engeda A,Chung M K.A modified theory for the flow mechanism in a regenerative flow pump[J].Power and Energy,2003,217:311-321.
[4] Mihalic T,Guzovic Z,Predin A.Performances and flow analysis in the centrifugal vortex pump[J].Journal of Fluids Engineering,2013,137:011107-1-7.
[5] Villiers E.The potential of large eddy simulation for the modeling of wall bounded flows[C]//Technology and Medicine,London,UK,2006.
[6] Barrio R,Parrondo J,Blanco E.Numerical analysis of the unsteady flow in the near-tongue region in a volute-type centrifugal pump for different operating points[J].Computers & Fluids,2010,39:859-870.
[7] Caridad J,Asuaje M,Kenyery F,et al.Characterization of a centrifugal pump impeller under two-phase flow conditions[J].Journal of Petroleum Science and Engineering,2008,63(1):18-22.
[8] Jafarzadeh B,Hajari A,Alishahi M M,et al.The flow simulation of a low-specific-speed high-speed centrifugal pump[J].Applied Mathematical Modelling,2011,35(1):242-249.
[9] Derakhshan S,Nourbakhsh A.Theoretical,numerical and experimental investigation of centrifugal pumps in reverse operation[J].Experimental Thermal and Fluid Science,2008,32:1620-1627.
[10] 李龙,王泽,徐峰,等.离心泵叶轮内变工况三维湍流数值模拟[J].农业机械学报,2004,35(6):72-74 (LI Long,WANG Ze,XU Feng,et al.Simulation of 3-D turbulent flow inside centrifugal pump impellers at varying conditions[J].Transactions of the Chinese Society of Agricultural Machinery,2004,35(6):72-74 (in Chinese))
[11] 赵斌娟,袁寿其,李红,等.双吸式叶轮内流三维数值模拟及试验研究[J].农业工程学报,2006,22(1):93-96 (ZHAO Binjuan,YUAN Shouqi,LI Hong,et al.3D numerical simulation and performance prediction of double-suction impeller[J].Transactions of the Chinese Society of Agricultural Engineering,2006,22(1):93-96 (in Chinese))
[12] 黄龙,郭令军,闵磊.叶片数变化对旋涡泵性能影响的研究[J].煤矿机械,2012,12(33):96-98 (HUANG Long,GUO Lingjun,MIN Lei,et al.Number of blade change to vortex pump performance influence research[J].Coal Mine Machinery,2012,12(33):96-98 (in Chinese))
[13] 朱挺辉,陈全民,陈金松.基于ANSYS CFX旋涡泵的数值模拟[J].机电技术,2013,10(5):55-57 (ZHU Tinghui,CHEN Quanmin,CHEN Jinsong.Numerical simulation of vortex pump based on ANSYS CFX[J].Mechanical & Electrical Technology,2013,10(5):55-57 (in Chinese))
[14] 张康智,王芳,陈万强.双支撑旋涡泵的性能分析和基于Fluent的流场分析[J].制造业自动化,2014,36(3):47-49 (ZHANG Kangzhi,WANG Fang,CHEN Wanqiang.Analysis of internal flow field and function of double support vortex pump based on Fluent[J].Manufacturing Automation,2014,36(3):47-49 (in Chinese))
[15] 张菲茜.微型旋涡泵性能及压力脉动特性研究[D].杭州:浙江大学,2015 (ZHANG Feiqian.Study of performance and pressure fluctuation characteristics of a micro regenerative pump[D].Hangzhou:Zhejiang University,2015 (in Chinese))
[16] 贾婉君.结构参数对旋涡泵内部流场性能影响的数值模拟分析[D].河北:燕山大学,2014 (JIA Wanjun.Numerical simulation of the effect of the structural parameters on the internal flow flield of vortex pump[D].Hebei:Yanshan University,2014 (in Chinese))
[17] 王洋,李亚成,曹璞钰,等.M型截面流道对旋涡泵性能的影响分析[J].农业机械学报,2014,45(3):72-74 (WANG Yang,LI Yacheng,CAO Ouyu,et al.Effects of channel with M-type section on the performance of vortex pump[J].Transactions of the Chinese Society of Agricultural Machinery,2014,45(3):72-74 (in Chinese))
[18] 沙毅,李金磊,刘祥松.自吸旋涡泵变转速性能与内部流场试验[J].农业机械学报,2009,40(12):119-124 (SHA Yi,LI Jinlei,LIU Xiangsong.Self-priming vortex pump variable speed performance and internal flow test[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(12):119-124 (in Chinese))
[19] Smith L M,Reynolds W C.On the Yakhot-Orszag renormalization group method for deriving turbulence statistics and models[J].Physics of Fluid A,1992,4:364-390.