[1]顾 巍,成 立*,蒋红樱,等.立式轴流泵装置虹吸式出水流道水力特性CFD 研究[J].江苏水利,2018,(01):7-15.
 GU Wei,CHENG Li*,JIANG Hongying,et al.CFD study on the hydraulic characteristics of siphon outlet conduit of vertical axial flow pump[J].JIANGSU WATER RESOURCES,2018,(01):7-15.
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立式轴流泵装置虹吸式出水流道水力特性CFD 研究()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2018年01期
页码:
7-15
栏目:
规划与设计
出版日期:
2018-02-07

文章信息/Info

Title:
CFD study on the hydraulic characteristics of siphon outlet conduit of vertical axial flow pump
文章编号:
1007-7839(2018)01-0007-09
作者:
顾 巍1成 立2*蒋红樱3焦伟轩2张 帝2
1.大丰区水利局,江苏 盐城 224100;
2.扬州大学水利与能源动力工程学院,江苏 扬州 225009;
3.江苏省水利工程科技咨询股份有限公司,江苏 南京 210029
Author(s):
GU Wei1CHENG Li2*JIANG Hongying3JIAO Weixuan2ZHANG Di2
1.Dafeng Water Conservancy Bureau of Yancheng City,Yancheng 224100,Jiangsu;
2.College of Hydraulic,Energy and Power Engineering,Yangzhou University,Yangzhou 225009,Jiangsu;
3.Jiangsu Province Water Engineering Sci-tech Consulting Co.,Ltd.Nanjing 210029,Jiangsu
关键词:
虹吸式出水流道立式轴流泵水力性能数值模拟
Keywords:
siphon outlet conduitvertical axial flow pumphydraulic perfor mancenumerical simulation
分类号:
TV212
文献标志码:
B
摘要:
虹吸式出水流道结构形式及内部流动特性对立式轴流泵装置水力性能影响较大,基于定常不可压缩流体的控制方程和重整化群湍流模型应用SIMPLEC 算法,模拟了不同型式的虹吸式出水流道轴流泵装置内流动特性。定性地分析了几种经过型线优化的虹吸式出水流道内流场特征,定量地研究了多工况条件下虹吸式出水流道内水力损失及特征断面水流流态的差异。研究表明,在导叶体出口剩余还量的影响下,不同工况下虹吸式出水流道内水流流态存在明显差异;同一工况条件下,不同型式虹吸式出水流道内水流流态也存在一定差异;虹吸式出水流道内水力损失主要集中在驼峰断面前的流道上升段,流道整体水力损失与流量未呈二次方关系;轴向速度分布均匀度与速度加权平均角随着流量的变化呈现相同的波动趋势;随流道上升段倾角的增大(下降段倾角减小),驼峰断面速度加权平均角均值呈逐渐减小的趋势,变化范围在0. 1°~2. 8°之间,不同方案的驼峰断面轴向速度分布均匀性较好,均值的变化范围较小,在0.1% ~2% 之间。
Abstract:
The structure form and internal flow characteristics of the siphon outlet conduit have great influence on the hydraulic performance of the vertical axial flow pump. Flow characteristics of different types of siphon outlet conduit of axial flow pump devices were simulated based on the control equation of constant incompressible fluid and reorganized group turbulence model using SIMPLEC algorithm. The characteristics of flow field in siphon outflow passage optimized by several lines were qualitatively analyzed, and the differences of hydraulic loss and flow pattern of characteristic cross section in siphon outlet channel under multiple working conditions were quantitatively studied. The research showed that there existed obvious differences in siphon discharge flow pattern in different operating conditions under the influence of the remaining amount of the guide vane. Under the same working condition, there were also some differences in the flow pattern of water in different types of siphon outlet conduit. The hydraulic losses in the siphon outlet conduit were mainly concentrated in the ascending section of the flow channel before the hump section, and the overall hydraulic loss and flow rate in the flow channel were not quadratic. The axial velocity distribution uniformity and velocity weighted average angle showed the same trend of fluctuation with the change of flow rate. With the increase of the inclination of the ascending section of the runner, the mean weighted average angle of the section of the hump tended to decrease gradually with a range of 0.1°~ 2.8°.The axial velocity distribution of the hump sections was better in different schemes, and the mean range of variation was smaller, which was ranging from 0.1% to 2%.

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备注/Memo

备注/Memo:
收稿日期:2017-10-05
基金项目:国家自然科学基金(51779214);江苏水利科技项目(2016035);江苏省优势学科;江苏省青蓝工程中青年学术带头人项目;江苏省产学研前瞻性联合项目(BY2015061-12)
作者简介:顾巍(1977-),女,本科,工程师,主要从事泵站工程规划管理、设计工作。
通讯作者:成立(1975-),男,教授,博士生导师,主要从事泵站工程研究工作。
更新日期/Last Update: 2018-01-15