肖若富,王娜,杨魏,姚志峰,王福军.复合叶轮改善双吸式离心泵空化性能研究[J].农业机械学报,2013,44(9):35-39.
Xiao Ruofu,Wang Na,Yang Wei,Yao Zhifeng,Wang Fujun.Improvement of Cavitation Characteristics of Double Suction Centrifugal Pump with Compound Impeller[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(9):35-39.
摘要点击次数: 3326
全文下载次数: 1516
复合叶轮改善双吸式离心泵空化性能研究   [下载全文]
Improvement of Cavitation Characteristics of Double Suction Centrifugal Pump with Compound Impeller   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2013.09.007
中文关键词:  双吸式离心泵  复合叶轮  空化  计算流体动力学
基金项目:国家自然科学基金重点资助项目(51139007);“十二五”国家科技支撑计划资助项目(2012BAD08B03)
作者单位
肖若富 中国农业大学 
王娜 中国农业大学 
杨魏 中国农业大学 
姚志峰 中国农业大学 
王福军 中国农业大学 
中文摘要:针对双吸式离心泵在大流量工况下容易遭到汽蚀破坏,运行可靠性差的问题,采用长短叶片复合叶轮对双吸泵的空化性能进行改善研究。选用SST k—ω湍流模型及Rayleigh—Plesset空化模型,对常规叶轮和复合叶轮双吸泵进行了全流道三维定常数值计算,并与试验结果进行了对比,对叶轮内部流场进行了分析。研究表明,长短叶片复合叶轮能够显著改善双吸泵的空化性能,降低必需空化余量,减小空化区的范围,改善叶片表面压力分布及叶轮内部流动状况,在大流量工况下改善效果更为明显。
Xiao Ruofu,Wang Na,Yang Wei,Yao Zhifeng and Wang Fujun
China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University;China Agricultural University
Key Words:Double suction centrifugal pump  Compound impeller  Cavitation  Computational fluid dynamics
Abstract:In the large flow conditions, the double suction centrifugal pump is susceptible to cavitation damage and has bad operation reliability. Aiming at the problem, a compound impeller with long and short blades was used to improve the cavitation characteristics. By using the shear stress transport (SST) k—ωturbulence model and Rayleigh—Plesset cavitation model, numerical simulation of the double suction centrifugal pump with a conventional impeller and a compound impeller were carried out respectively. The simulation results in the form of characteristic curves were compared with the experimental data, and the internal flow field was analyzed. The result showed that in the large flow conditions, critical net positive suction of the pump with a compound impeller was reduced. Also, the compound impeller can reduce the vapour distribution, change the pressure distribution and improve the dropping flow and backflow. Moreover, the better effect would be achieved under large flow condition.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

   下载PDF阅读器