基于全空化模型的柱塞泵内空化流动数值模拟

摘要/Abstract

摘要：

针对典型斜盘式轴向柱塞泵工作时出现的空化现象，以某高压柱塞泵为例，建立了柱塞泵配流过程中，气液混合相的连续性控制方程和运动控制方程，推导了基于气液两相流的质量输运控制方程，并对柱塞泵进行了空化流动的数值模拟。仿真结果表明，不同的转速、压差和配流盘结构对柱塞腔内部、配流盘表面以及缸体与配流盘接触处的空化存在影响，且仿真结果与实验检测数据结果是吻合的。

关键词: 斜盘式轴向柱塞泵, 空化, 气液两相流, 气相生成率, 气相压缩率

Abstract:

According to the cavitation phenomenon in a typical swash plate axial piston pump, the continuity equation, motion equation and vapor-liquid mixed mass transport equations in a high pressure piston pump were built by consideration of the influences of the medium compressibility and turbulence model. And the numerical simulation of vapor-liquid flow in the pump was carried out. The simulation results show that the cavity in piston pump is affected by different speeds, pressure differential, and valve plate structure. Finally, compared with the experimental data, the simulation results are agreement with the actual data.

Key words: swash plate axial piston pump, cavitation, vapor-liquid two-phase flow, vapor generation ratio, vapor compression ratio

中图分类号:

TH137.51

刘春节, 吴小锋, 干为民, 何亚峰. 基于全空化模型的柱塞泵内空化流动数值模拟[J]. 中国机械工程, 2015, 26(24): 3341-3347.

Liu Chunjie, Wu Xiaofeng, Gan Weimin, He Yafeng. Numerical Simulation of Cavitation Flow in Piston Pump Based on Full Cavitation Model[J]. China Mechanical Engineering, 2015, 26(24): 3341-3347.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: http://www.cmemo.org.cn/CN/

http://www.cmemo.org.cn/CN/Y2015/V26/I24/3341

参考文献

[1]Schnerr G H，Sauer J. Physical and Numerical Modeling of Unsteady Cavitation Dynamics[C]//Fourth International Conference on Multiphase Flow. New Orleans，USA，2001：305-316.
[2]Singhal A K，Athavale M M，Li H. Mathematical Basis and Validation of the Full Cavitation Model [J]. Journal of Fluids Engineering，2002，124(3)：617-624.
[3]Zwart P J，Gerber A G，Belamri T A. Two-phase Flow Model for Prediction Cavitation Dynamics[C]//Fifth International Conference on Multiphase Flow. Yokohama，Japan，2004：216-223
[4]Kubota A，Kato H，Yamaguchi H. A New Modeling of Cavitation Flows：a Numerical Study of Unsteady Cavitation on a Hydrofoil Section[J]. J. Fluid Mech.，1992，240(2)：59-96.
[5]Kunz R F，Boger D A，Sinebring D R，et al. A Preconditioned Navier-Stokes Method for Two-phase Flows with Application to Cavitation Prediction[J]. Computers and Fluids，2000，29(8): 849-875.
[6]Singhal A K，Athavale M M，Li Huiying，et al. Mathematical Basis and Validation of the Full Cavitation Model [J]. Journal of Fluids Engineering，2002，124：1-8.
[7]Zhang Rui，Chen Hongxun. Numerical Analysis of Cavitation within Slanted Axial-flow Pump[J]. Journal of Hydrodynamics，2013，25(5)：663-672.
[8]翟江，赵勇刚，周华. 水压轴向柱塞泵内部空化流动数值模拟[J]. 农业机械学报，2012，43(11)：244-260.
Zhai Jiang，Zhao Yonggang，Zhou Hua. Numerical Simulation of Cavitating Flow in Water Hydraulic Axial Piston Pump[J]. Transactions of the Chinese Society for Agricultural Machinery，2012，43(11)：224-260.
[9]刘晓红，于兰英，刘恒龙，等. 液压轴向柱塞泵配流盘气蚀机理[J]. 机械工程学报，2008，44(11)：203-208.
Liu Xiaohong，Yu Lanying，Liu Huanlong，et al. Cavitation Erosion Mechanism of Port Plate of Hydraulic Axial Plunger Pump[J]. Journal of Mechanical Engineering，2008，44(11)：203-208.
[10]Johansen S T，Wu J，Shyy W. Filter-based Unsteady RANS Computations[J]. International Journal of Heat and Fluid Flow，2004，25(1)：10-21.
[11]Cebecl T，Rshao J，Kafyeke F，et al. Computational Fluid Dynamics for Engineers[M]. Long Beach，CA，USA：Horizons Publishing Inc.，2005：88-89.
[12]刘厚林，刘东喜，王勇，等. 泵空化流数值计算研究现状及展望[J]. 流体机械，2011，39(9)：38-44.
Liu Houlin，Liu Dongxi，Wang Yong，et al. Numerical Research Status and Prospects of Cavitating Flow in a Pump[J]. Fluid Machinery，2011，39(9)：38-44.
[13]戚定满，鲁传敬，何友声. 两空泡运动特性研究[J]. 力学季刊，2001，21(1)：16-20.
Qi Dingman，Lu Chuanjing，He Yousheng. The Speciality of Two Bubbles Interaction[J]. Chinese Quarterly Mechanics，2000，21(1)：16-19.
[14]李军，刘立军，李国君，等. 离心泵叶轮内空化流动的数值预测[J]. 工程热物理学报，2007，28(6)：948-950.
Li Jun，Liu Lijun，Li GuoJun，et al. Numerical Prediction of Cavitation Flows in a Centrifugal Pump Impeller[J]. Journal of Engineering Thermophysics，2007，28(6)：948-950.
[15]杨敏官，姬凯，李忠. 轴流泵叶轮内空化流动的数值计算[J]. 农业机械学报，2010，41(1)：11-14.
Yang Minguan，Ji Kai，Li Zhong. Numerical Calculation of Cavitation Flow in Impeller of Axial-flow Pump[J]. Transactions of the Chinese Society for Agricultural Machinery，2010，41(1)：10-14.