大型轴流泵空化特性的数值模拟

燕浩; 刘梅清; 梁兴; 林鹏; 吴远为

doi:10.7652/xjtuxb201411008

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大型轴流泵空化特性的数值模拟

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- 大型轴流泵空化特性的数值模拟
- Numerical Simulation on Cavitation Behavior of Large-Scale Axial-Flow Pumps
- 西安交通大学学报 2014年48卷第11期页码：44-50
- 作者机构：
  
  武汉大学动力与机械学院,武汉,430072
- 作者简介：
- 基金信息：
  
  : 2014-03-17。作者简介: 燕浩(1985—),男,博士生;刘梅清(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(50879062);湖北省水利重点科研课题(HBSLKJ201307)
- DOI：10.7652/xjtuxb201411008
  中图分类号： TH311
- 网络首发：2014-11-10，
  
  纸质出版：2014
- 稿件说明：
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燕浩, 刘梅清, 梁兴, 等. 大型轴流泵空化特性的数值模拟[J]. 西安交通大学学报, 2014,48(11):44-50.

Numerical Simulation on Cavitation Behavior of Large-Scale Axial-Flow Pumps[J]. 2014, 48(11): 44-50.
燕浩, 刘梅清, 梁兴, 等. 大型轴流泵空化特性的数值模拟[J]. 西安交通大学学报, 2014,48(11):44-50. DOI： 10.7652/xjtuxb201411008.

Numerical Simulation on Cavitation Behavior of Large-Scale Axial-Flow Pumps[J]. 2014, 48(11): 44-50. DOI： 10.7652/xjtuxb201411008.

摘要

为了研究大型立式轴流泵内部的空化特性问题

选取幸福泵站中叶轮直径为2.80 m的机组作为研究对象

分别进行了试验研究和数值模拟

计算结果与试验结果相吻合

验证了数值模拟的准确性

得到该泵的汽蚀余量为4.86 m

临界空化压力为48.50 kPa。模拟结果表明:在泵的进口压力从47.00 kPa下降到42.00 kPa的过程中

空化持续长度从0.24迅速变化到1

空化迅速扩散至整个叶片; 当流量大于设计值时

空化只发生在工作面靠近叶片进口边处

而当流量小于设计工况时

空化主要发生在叶片吸力面

且当液流角β'

小于翼型最大厚度处斜率所对应的角度α时

叶片吸力面形成1个空化区域

当β'

大于α时

叶片吸力面将会形成2个空化区域; 当大型轴流泵发生空化时

增大进口压力至临界空化压力以上可以有效消除内部空化现象; 通过调整运行流量至设计流量附近

可以有效减弱泵内部的空化程度。

Abstract

To study the cavitation behavior of large-scale vertical axial-flow pumps

it is necessary to establish accurate prediction methods. In this paper

the real pump with an impeller diameter of 2.80 m in Xing Fu Pumping Station is chosen as the research object. Firstly

through the comparison of numerical and experimental results

the accuracy of numerical simulation is proved. The pump's net positive suction head(NPSH)is 4.86 m

and its critical vapor pressure(P

)is 48.50 kPa. Then changing the pump inlet pressure

the results show that the cavitation last length(χ)is rapidly changed from 0.24 to 1.00 along with the pressure from 47.00 kPa to 42.00 kPa

and the cavitation area quickly spreads to the whole bl

ades. Changing the pump operating conditions

the results show that cavitation only occurs on the working side near the blades' inlet under the large flow conditions

and mainly appears on the suction side of the blades

关键词

Keywords

references

王福军, 黎耀军, 王文娥, 等. 水泵CFD应用中的若干问题与思考[J]. 排灌机械, 2005, 23(5): 1-10.

WANG Fujun, LI Yaojun, WANG Wen'e, et al. Analysis on CFD application in water pumps[J]. Drainage and Irrigation Machinery, 2005, 23(5): 1-10.

张德胜, 吴苏青, 施卫东, 等. 不同湍流模型在轴流泵叶顶泄漏涡模拟中的应用与验证[J]. 农业工程学报, 2013, 29(13): 46-53.

ZHANG Desheng, WU Suqing, SHI Weidong, et al. Application and experiment of different turbulence models for simulating tip leakage vortex in axial flow pump[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(13): 46-53.

张德胜, 吴苏青, 施卫东, 等. 轴流泵小流量工况条件下叶顶泄漏空化特性[J]. 农业工程学报, 2013, 29(22): 68-76.

ZHANG Desheng, WU Suqing, SHI Weidong, et al. Characteristics of tip leakage vortex cavitation in axial flow pump at small flow rate condition[J]. Transactions of the Chinese Society of Agricultural Engineering, 2013, 29(22): 68-75.

施卫东, 李通通, 张德胜, 等. 轴流泵叶轮区域空化特性数值模拟[J]. 农业工程学报, 2012, 28(13): 88-96.

SHI Weidong, LI Tongtong, ZHANG Desheng, et al. Numerical simulation on cavitating characteristic in impeller of axial-flow pump[J]. Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(13): 88-96.

施卫东, 吴苏青, 张德胜, 等. 叶片数对高比转数轴流泵空化特性的影响[J]. 农业机械学报, 2013, 44(11): 72-77.

SHI Weidong, WU Suqing, ZHANG Desheng, et al. Effects of number of blades on cavitation of high specific speed axial flow pump[J]. Journal of Agricultural Machinery, 2013, 44(11): 72-77.

ZHANG Rui, CHEN Hong-xun. Numerical analysis of cavitation within slanted axial-flow pump[J]. Journal of Hydrodynamics, 2013, 25(5): 663-672.

杨正军, 王福军, 刘竹青, 等. 基于CFD的轴流泵空化特性预测[J]. 排灌机械工程学报, 2011, 29(1): 11-17.

YANG Zhengjun, WANG Fujun, LIU Zhuqing, et al. Prediction of cavitation performance of axial-flow pump based on CFD[J]. Journal of Drainage and Irrigation Machinery Engineering, 2011, 29(1): 11-17.

关醒凡. 现代泵理论与设计[M]. 北京: 中国宇航出版社, 2010: 74-80.

YANG Sun-Sheng, DERAKHSHAN S, KONG Fan-Yu. Theoretical, numerical and experimental prediction of pump as turbine performance[J]. Renewable Energy, 2012, 48: 507-513.

SPENCE R, AMARAL-TEIXEIRA J. Investigation into pressure pulsations in a centrifugal pump using numerical methods supported by industrial tests[J]. Computers and Fluids, 2008, 37(6): 690-704.

杨孙圣, 孔繁余, 陈浩, 等. 叶片进口安放角对液力透平性能的影响[J]. 中南大学学报: 自然科学版, 2013, 44(1): 108-114.

YANG Sunsheng, KONG Fanyu, CHEN Hao, et al. Effects of blade inlet angle on performance of pump as turbine[J]. Journal of Central South University: Science and Technology, 2013, 44(1): 108-114.

ANSI/API Standard 610. ISO 13709: 2009(Identical)Centrifugal pumps for petroleum, petrochemical and natural gas industries[S]. 11th ed. Geneva, Switzerland: ISO, 2010.

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