Numerical Analysis for Pressure Fluctuation of Waterjet Pump

doi:10.7652/xjtuxb201411009

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Numerical Analysis for Pressure Fluctuation of Waterjet Pump

更新时间：2025-07-09

- Numerical Analysis for Pressure Fluctuation of Waterjet Pump
- Vol. 48, Issue 11, Pages: 51-57+102(2014)
- 作者机构：
  
  海军工程大学动力工程学院,武汉,430033
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201411009
  CLC： TH313
- Online First：10 November 2014，
  
  Published：2014
- 稿件说明：
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Numerical Analysis for Pressure Fluctuation of Waterjet Pump[J]. 2014, 48(11): 51-57+102.
DOI：

Numerical Analysis for Pressure Fluctuation of Waterjet Pump[J]. 2014, 48(11): 51-57+102. DOI： 10.7652/xjtuxb201411009.

摘要

针对喷水推进器装船后不均匀来流对压力脉动特性的影响

以某巡逻艇喷水推进混流泵为研究对象

基于RANS方程和SST湍流模型

通过流体动力学软件CFX稳态计算

进行了巡逻艇航速数值预报

所得计算值与试航值误差为1.8%

从而验证了计算流体动力数值计算的可信性。采用分离涡模拟方法

对敞水泵和装船泵进行了三维非定常数值模拟

计算分析了叶轮进出口、叶轮内部、导叶内部及喷口5个截面和叶轮叶顶间隙处的压力脉动

并对不均匀来流带来的差别进行了研究。结果表明:在敞水泵和船后泵的叶轮出口、导叶内部

水流距叶轮越远

压力脉动影响越小

压力脉动频率取决于叶轮转动频率

压力脉动幅值沿轮毂到轮缘逐渐增大

船后泵压力脉动幅值整体高于敞水泵; 对于均匀来流

敞水泵旋转域叶轮室的压力脉动频率主要受导叶的影响

船后泵则受轴频的影响

二者压力脉动幅值在叶顶间隙处均从叶顶沿导边到随边逐渐增大; 对于敞水泵

流道出口压力脉动频率主要受叶频控制

对于船后泵

压力脉动频率为轴频。

Abstract

For ununiform inflow to impeller due to hull and duct

the dynamic characteristics of waterjet pump(mixed-flow pump)in patrol craft are numerically analyzed. The steady flow is simulated by SST turbulence model based on RANS and the calculated speed of ship from CFD exceeds the trial voyage by 1.8%. The unsteady flow of bare pump and the same pump fixed on craft is simulated by CFD method for DES turbulence. The pressure fluctuation of impeller inlet

impeller blade channels

impeller outlet

guide vane channels

nozzle and tip of impeller is supervised and discussed

and the difference caused by the ununiformity is also analyzed. The results show that on the impeller outlet

guide vane channels and the nozzle of both bare pump and fixed pump

the farther the flow to the impeller the weaker the pressure pulsation effects. The pressure fluctuation frequency is mainly dominated by the impeller rotation frequency

and the pressure fluctuation amplitude gradually increases from hub to tip

however

the corresponding amplitude is lager in pump fixed on craft. In the revolver impeller

the pressure fluctuation frequency is mainly dominated by the guide vanes reaction in bare pump while by shaft frequency in pump fixed on craft. The pressure fluctuation amplitude in the tip gradually increases along the axis from the leading edge to the trailing edge. In the duct outlet

the pressure fluctuation frequency is mainly dominated by the impeller rotation frequency in bare pump while by shaft frequency in pump fixed on craft.

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references

施卫东, 邹萍萍, 张德胜, 等. 高比转速斜流泵内部非定常压力脉动特性[J]. 农业工程学报, 2011, 27(4): 147-152.

SHI Weidong, ZOU Pingping, ZHANG Desheng, et al. Unsteady flow pressure fluctuation of high-specific-speed mixed-flow pump[J]. Transactions of the CSAE, 2011, 27(4): 147-152.

MOISES S, BAKIR S, KHELLADI F, et al. Pressure fluctuations reduction in centrifugal pumps: Influence of impeller geometry and radial gap[J/CD]. ISRN Mechanical Engineering, 2011: ID 479594.

CHEAH K W, LEE T S, WINOTO S H. Unsteady fluid flow study in a centrifugal pump by CFD method[C]∥4th International Symposium on Fluid Machinery and Fluid Mechanics. Beijing, China: Tsinghua University Press, 2009: 66-71.

ZOBEIRI A, KUENY J L, FARHAT M, et al. Pump-turbine rotor-stator in generating mode pressure fluctuation in distributor channel[C]∥The 23th IAHR Symposium on Hydraulic Machinery and Systems. Yokohama, Japan: IAHR, 2006: 17-21.

FURUKAWA A, TAKAHARA H. Pressure fluctuation in a vaned diffuser downstream from a centrifugal pump impeller[J]. International Journal of Rotating Machinery, 2003, 9(4): 285-292.

王春林, 贾飞, 吴志旺, 等. 高比转数混流泵非定常流场压力脉动特性[J]. 排灌机械工程学报, 2013, 31(2): 103-108.

WANG Chunlin, JIA Fei, WU Zhiwang, et al. Pressure fluctuation of unsteady flow in high Specific speed mixed-flow pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(2): 103-108.

施卫东, 姚捷, 张德胜, 等. 采样频率和时间对轴流泵压力脉动特性的影响[J]. 排灌机械工程学报, 2013, 31(3): 190-195.

SHI Weidong, YAO Jie, ZHANG Desheng, et al. Influence of sampling frequency and time on pressure fluctuation characteristics of axial-flow pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(3): 190-195.

常书平, 王永生, 魏应三, 等. 喷水推进器内非定常压力脉动特性[J]. 江苏大学学报: 自然科学版, 2012, 33(5): 522-527.

CHANG Shuping, WANG Yongsheng, WEI Yingsan, et al. Pressure fluctuation of unsteady flow in waterjet[J]. Journal of Jiangsu University: Natural Science Edition, 2012, 33(5): 522-527.

靳栓宝, 王永生, 常书平, 等. 混流泵内流场压力脉动特性研究[J]. 农业机械学报, 2013, 44(3): 64-68.

JIN Shuanbao, WANG Yongsheng, CHANG Shuping, et al. Pressure fluctuation of interior flow in mixed-flow pump[J]. Transactions of the Chinese Society for Agricultural Machinery, 2013, 44(3): 64-68.

靳栓宝, 王永生, 杨琼方. 基于数值试验的喷水推进轴流泵的一体化设计[J]. 中国造船, 2010, 51(3): 39-45.

JIN Shuanbao, WANG Yongsheng, YANG Qiongfang. Integration design of water jet axial flow pump based on numerical experimentation[J]. Shipbuilding of China, 2010, 51(3): 39-45.

刘学强, 伍贻兆, 程克用. 用基于M-SST模型的DES数值模拟喷流流场[J]. 力学学报, 2004, 36(4): 401-406.

LIU Xueqiang, WU Yizhao, CHENG Keyong. Computation of lateral turbulent jets using M-SST DES model[J]. Acta Mechanica Sinica, 2004, 36(4): 401-406.

魏应三, 王永生. 喷水推进器进水流道不均匀度统一描述[J]. 武汉理工大学学报, 2009, 31(8): 159-163.

WEI Yingsan, WANG Yongsheng. Unified description of out flow non-uniformity of waterjet duct[J]. Journal of Wuhan University of Technology, 2009, 31(8): 159-163.

黎义斌, 李仁年, 王秀勇, 等. 低比转数混流泵压力脉动特性的数值模拟[J]. 排灌机械工程学报, 2013, 31(3): 205-209.

LI Yibin, LI Rennian, WANG Xiuyong, et al. Numerical analysis of pressure fluctuation in low specific speed mixed-flow pump[J]. Journal of Drainage and Irrigation Machinery Engineering, 2013, 31(3): 205-209.

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