灯泡贯流泵中不同射流参量的减阻特性研究  

Research on Drag Reduction Characteristics of Different Jet Parameters in the Bulb Through-flow Pump

作　　者：张杨杨 刘德民 陈旭光 张凤鹏 程宦 ZHANG Yang-yang;LIU De-min;CHEN Xu-guang;ZHANG Feng-peng;CHENG Huan(College of Engineering,Ocean University of China,Qingdao 266404,Shangdong Province,China;Research and Test Center,Dongfang Electric Co.,Ltd.,Deyang 618000,Sichuan Province,China)

机构地区：[1]中国海洋大学工程学院,山东青岛266404 [2]东方电机有限公司研究试验中心,四川德阳618000

出　　处：《中国农村水利水电》2024年第10期112-118,126,共8页China Rural Water and Hydropower

基　　金：四川省科技计划资助项目(2022ZDZX0041)。

摘　　要：为探究灯泡贯流泵中不同射流参量的减阻特性,针对鲨鱼鳃部开展仿生设计,建立灯泡体前端设有射流端口的灯泡贯流泵模型,通过CFX研究射流端口安放位置、射流速度以及安放数量对灯泡贯流泵流场的影响机制。结果表明:近壁主流同射流相互碰撞,主流向射流传递轴向动量削弱近壁主流轴向速度;射流向主流传递径向动量增大近壁主流径向速度,托举近壁高流速带远离灯泡体,使近壁中低流速带拓宽、高流速带收缩,减小壁面切应力;计算预测减阻效果最高达23.069%,扬程提高0.083 m、效率提升1.729%,可为灯泡贯流泵优化设计、高效运行提供指导。In order to explore the drag reduction characteristics of different jet parameters in the bulb through pump,the bionic design was carried out for the shark gills,and the model of the bulb through the pump with a jet port at the front end of the bulb body was established,and the influence mechanism of the placement position,jet velocity and number of jet ports on the flow field of the bulb through the pump was studied by CFX.The results show that the near-wall main stream collides with the jet,and the axial momentum transmitted by the main stream to the jet weakens the axial velocity of the near-wall main stream.The radial momentum of the jet to the main stream increases the radial velocity of the near-wall mainstream,and lifts the near-wall high-velocity zone away from the bulb body,so that the near-wall medium and low velocity bands are widened,the high-velocity zone is contracted,and the wall shear stress is reduced.The calculation predicts that the drag reduction effect is up to 23.069%,the head is increased by 0.083 m,and the efficiency is increased by 1.729%,which can provide guidance for the optimal design and efficient operation of the bulb through-flow pump.

关 键 词：射流 减阻 灯泡贯流泵 数值仿真 

分 类 号：TV734.1[水利工程—水利水电工程]