排灌机械工程学报
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排灌机械工程学报  2016, Vol. 34 Issue (10): 847-852    DOI: 10.3969/j.issn.1674-8530.15.0167
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对旋轴流式喷水推进泵的进口预旋
黄振杰1, 潘中永1, 申占浩2, 潘希伟3
1.江苏大学国家水泵及系统工程技术研究中心, 江苏 镇江 212013: 2.江苏大学京江学院, 江苏 镇江 212013; 3.华中科技大学机械学院, 湖北 武汉 430074
Inlet pre-whirl for contrarotating axial-flow water-jet pump
HUANG Zhenjie1, PAN Zhongyong 1, SHEN Zhanhao2, PAN Xiwei3
1.National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.School of Jingjiang, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 3.Mechanics Institute, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China
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摘要 为了研究喷水推进泵在小流量下效率下降较快的原因,应用计算流体动力学方法对不同工况下的喷水推进泵进行数值模拟,研究进口预旋的产生和发展,分析进口预旋对效率的影响以及转速对进口预旋的作用.结果表明:在设计工况Qd时,首级叶轮进口的绝对速度圆周分量vu接近0,基本不随流道半径的变化而变化,进口预旋可以忽略;0.8Qd时,vu随流道半径的增加出现小幅增大,仅仅在轮缘处有较小的正预旋;从0.6Qd开始,预旋变化明显,流量越小,预旋变化越大.小流量下,降低首级叶轮的转速,可以有效地改善进口预旋,提高泵的效率;通过调节叶轮转速,可以有效地改善泵内部的流动状态并通过比较分析出小流量相对较优的转速.研究结果对于其他比转数的喷水推进泵的进口预旋分析具有重要的指导意义.
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黄振杰
潘中永
申占浩
潘希伟
关键词喷水推进泵   进口预旋   对旋   小流量   转速控制     
Abstract: To study the reason why water-jet propulsion pump efficiency at a small flow rate decreased rapidly, the computational fluid dynamics method was applied to the numerical simulation of water-jet pump at a small flow rate. Based on different flow rates and rotation rate control methods,the emergence and development of inlet pre-whirl was studied and the relation between the rotation rate and the inlet pre-whirl was analyzed. The results show that in the working condition, circumferential component of the absolute velocity of the front inlet impeller is close to 0 and changes hardly following the flow channel, and the inlet pre-whirl can be neglected. In the 0.8 Qd working condition, the increase along with the change of flow channel is very small, there is a small pre-whirl only at the rim. At the beginning of 0.6 Qd, the change in inlet pre-whirl becomes obvious, the lower the flow is, the greater the change is. Under the low flow, reducing the front impeller speed can effectively improve the inlet pre-whirl and also can improve the efficiency of the pump. Regulating the impeller speed can effectively improve the inner flow of the pump. The results are of important guiding significance to the inlet pre-whirl analysis of other specific speed water-jet propulsion pumps.
Key wordswater-jet pump   inlet pre-whirl   contrarotating   low flow   rotationrate control   
收稿日期: 2015-07-24;
基金资助:国家自然科学基金资助项目(51209108);江苏省自然科学基金资助项目(BK20151342)
通讯作者: 黄振杰(1989—),男,河南兰考人,硕士研究生(741406451@qq.com),主要从事风机外部流场流动分析研究.   
作者简介: 潘中永(1973—),男,山东济南人,副研究员,博士(pzy@ujs.edu.cn),主要从事泵内部流动与不稳定性研究.
引用本文:   
黄振杰,潘中永,申占浩等. 对旋轴流式喷水推进泵的进口预旋[J]. 排灌机械工程学报, 2016, 34(10): 847-852.
HUANG Zhen-Jie-,PAN Zhong-Yong-,SHEN Zhan-Hao- et al. Inlet pre-whirl for contrarotating axial-flow water-jet pump[J]. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(10): 847-852.
 
[1] 倪永燕,刘为民.泵喷水推进器研究进展[J].船海工程,2013,42(5):1-5.
NI Yongyan, LIU Weimin. Research progress on waterjet pump[J].Ship & ocean engineering,2013,42(5):1-5.(in Chinese)
[2] PARHA W G,JANGA J H,CHUNB H,et a1.Numerical flow and performance analysis of water-jet propulsion system [J].Ocean engineering,2005,32:1740-1761.
[3] 潘中永,吴涛涛.斜流式泵喷水推进器内部流动不稳定性分析[J].华中科技大学学报(自然科学版),2012,40(9): 118-121.
PAN Zhongyong, WU Taotao. Instability analysis of internal flow in mixed-flow pump water-jet propulsion[J].Journal of Huazhong University of Science and Technology(natural science edition),2012,40(9): 118-121.(in Chinese)
[4] GALINDO J,SERRANO J R,MARGOT X,et al.Potential of flow pre-whirl at the compressor inlet of automotive engine turbochargers to enlarge surge margin and overcome packaging limitations [J].International journal of heat and fluid flow,2007,28(3):374-387.
[5] 施卫东,李辉,陆伟刚,等.进口预旋对低比速离心泵无过载性能的影响[J].农业机械学报,2013,42(5):50-55.
SHI Weidong,LI Hui,LU Weigang,et al.Effect of prewhirl flow on non-overload performance of low specific speed centrifugal pumps[J]. Transactions of the CSAM,2013,42(5):50-55.(in Chinese)
[6] 刘承江,王永生,张志宏,等.喷水推进器推力的 CFD计算方法研究[J].计算力学学报,2008,25(6):927-931.
LIU Chengjiang,WANG Yongsheng,ZHANG Zhihong, et al.Research on computational methods of water-jet thrust using CFD[J].Chinese journal of computational mechanics,2008,25(6):927-931.(in Chinese)
[7] FURUKAWA A,SHIGEMITSU T,WATANABE S. Performance test and flow measurement of contra-rotating axial flowpump[J].Journal of thermal science,2007,16(1):7-13.
[8] 李辉.基于CFD方法的全方向推进器水动力性能研究[D].哈尔滨:哈尔滨工程大学,2009.
[9] 陈伟,陆林广,王刚,等.轴流泵运行工况对叶轮室进口预旋的影响[J].水力发电学报,2012,31(1): 213-219.
CHEN Wei,LU Linguang,WANG Gang,et al. Influence of axial-flow pump operating condition on the pre-swirl at impeller chamber inlet[J]. Journal of hydroelectric engineering,2012,31(1): 213-219.(in Chinese)
[10] PARK W G, JIN H J, CHUN H H, et al. Numerical flow and performance analysis of waterjet propulsion system[J]. Journal of the society of naval architects of Korea, 2005, 32(14):1740-1761.
[11] 申占浩,潘中永,李红,等.基于CFD的对旋轴流式喷水推进泵转速控制方法[J].排灌机械工程学报,2014, 32(11): 931-936. 浏览
SHEN Zhanhao, PAN Zhongyong, LI Hong, et al.CFD-based rotational speed control method for contra-rotating axial-flow water-jet pump[J].Journal of drainage and irrigation machinery engineering,2014,32(11): 931-936.(in Chinese)
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