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蜗壳脉动压力作用下抽水蓄能电站的振动路径研究 被引量:1
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作者 张鹏 宋志强 《水资源与水工程学报》 CSCD 2019年第2期154-160,共7页
基于结构声强理论并在ANSYS中进行二次开发提取计算值,通过origin Pro建立其相关结构的三维矢量图,将振动能量的传递可视化。建立某抽水蓄能电站地下厂房结构的有限元模型,提取发电和抽水两种工况下厂房结构在蜗壳脉动作用下各层的结构... 基于结构声强理论并在ANSYS中进行二次开发提取计算值,通过origin Pro建立其相关结构的三维矢量图,将振动能量的传递可视化。建立某抽水蓄能电站地下厂房结构的有限元模型,提取发电和抽水两种工况下厂房结构在蜗壳脉动作用下各层的结构声强计算值,分析振动的传递路径并将其可视化。结果表明:发电工况下横河向与顺河向振动自蜗壳流道向上传递中逐渐向边墙立柱转移但仍以风罩为主,而在竖向振动传递中最终以左右岸立柱为主,其结构声强占比为70. 02%;抽水工况下横河向和顺河向的振动传递最终以左右岸立柱为主,竖向振动传递最终以风罩为主,其结构声强占比为61. 22%,与发电工况相反。 展开更多
关键词 蜗壳脉动压力 传递 结构声强 可视化 地下厂房 路径 抽水蓄能电站
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Effect of bionic mantis shrimp groove volute on vortex pump pressure pulsation 被引量:4
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作者 GU Yun-qing ZHANG Wen-qi +3 位作者 MOU Jie-gang ZHENG Shui-hua ZHOU Pei-jian FAN Tian-xing 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第10期2399-2409,共11页
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 vo... 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. 展开更多
关键词 vortex pump bionic mantis shrimp groove VOLUTE pressure pulsation flow characteristic
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