Effect of bionic mantis shrimp groove volute on vortex pump pressure pulsation  

仿虾蛄沟槽蜗壳对旋流泵压力脉动的影响（英文）

作　　者：GU Yun-qing ZHANG Wen-qi MOU Jie-gang ZHENG Shui-hua ZHOU Pei-jian FAN Tian-xing 谷云庆;张文奇;牟介刚;郑水华;周佩剑;范天星

机构地区：[1]School of Energy and Power Engineering, Jiangsu University [2]College of Mechanical Engineering, Zhejiang University of Technology

出　　处：《Journal of Central South University》2018年第10期2399-2409,共11页中南大学学报（英文版）

基　　金：Projects(51779226,51476144)supported by the National Natural Science Foundation of China;Project(2017C31025)supported by Zhejiang Province Department Public Welfare Industrial Projects,China;Project(2016M601736)supported by Postdoctoral Science Foundation of China;Project(1601028C)supported by Postdoctoral Research Funding Plan in Jiangsu Province,China

摘　　要：In order to reduce pressure pulsation of vortex pumps,the mantis shrimp was chosen as biological prototype and a bionic engineering model was developed from its abdominal segment grooves.Bionic mantis shrimp groove volute vortex pump models with different numbers of grooves were developed,and numerical simulation methods were used to calculate the models to study the effects of the volute grooves on the pressure pulsation of a vortex pump.The results show that a bionic groove volute could effectively improve the pressure pulsation of a vortex pump outlet,and reduce the pressure pulsation around the pump’s tongue and other internal points.The pressure pulsation under different conditions is impacted by shaft frequency and blade frequency.The bionic groove structure has little effect on the external characteristics of the pump,but could improve the static pressure,velocity distribution,and vortex structure of the flow field.Additionally,pressure pulsation of the whole vortex pump is reduced.为了改善旋流泵的压力脉动,基于仿生学原理,以虾蛄为生物原型,抽取虾蛄腹节处沟槽仿生工程化模型,建立不同沟槽数的仿虾蛄沟槽蜗壳的旋流泵模型。采用数值模拟方法,对不同沟槽数的旋流泵模型进行计算,研究蜗壳沟槽对旋流泵压力脉动的影响。结果表明:仿生沟槽结构对旋流泵外特性造成的影响很小,但仿生沟槽结构可以通过改善旋流泵隔舌部位流体的流线,抑制漩涡的生成,有效地抑制靠近隔舌区域及旋流泵出口处的叶频压力脉动,降低旋流泵整体的压力脉动,提高旋流泵运行稳定性。

关 键 词：vortex pump bionic mantis shrimp groove VOLUTE pressure pulsation flow characteristic 

分 类 号：TH38[机械工程—机械制造及自动化]