Numerical and experimental study of cavitation performance in sea water hydraulic axial piston pump

Yin, Fanglong; Nie, Songlin; Xiao, Shuhan; Hou, Wei

doi:10.1177/0959651816651547

Cited by 24 publications

(21 citation statements)

References 39 publications

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“…where Ã indicates the mass transfer among various phases inside the CV, which can be determined by referring SA Imagine and Zhou et al, 23,24 as shown in equation (14).…”

Section: Gas Evolution and Transportationmentioning

confidence: 99%

“…11 Some of the aforementioned models were successfully implemented in commercial computational fluid dynamic solvers. [12][13][14][15] However, these approaches are often highly computationally expensive for simulation in complex fluid domains such as for axial piston machines. The lumped parameter of continuum modeling methods can be used for producing sufficiently accurate results, and a careful study of the overall features of hydraulic machines or components can reduce computational costs.…”

Section: Introductionmentioning

confidence: 99%

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First attempt to determine the critical inlet pressure for aircraft pumps with a numerical approach that considers vapor cavitation and air aeration

Dong

Wang

Chen³

2020

Proceedings of the Institution of Mechanical Engineers, Part G:

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Critical inlet pressure (CIP) is a key parameter for ensuring the long life and steady operation of aircraft piston pumps. In the past, this parameter was determined through experimental methods that had drawbacks such as a long duration and narrow application range. To identify an alternate approach that can be substituted for the traditional approach, a numerical model for determining the CIP that considers the dynamic effects of the transient period is proposed in this paper. First, a dynamic model of the pressure-controlled piston pump was established in the form of differential equations based on the lumped parameter method. Next, the fluid model for vapor cavitation and air aeration was derived using homogeneous mixture theory with consideration of the effects of compressibility of both liquid and gaseous phases. Simulation investigation highlighted how the shaft speed, inlet pressure, and transient time influence the fluid properties inside the piston chamber, and a method for determining the CIP both for steady and transient conditions is presented. Finally, tests were conducted on an aircraft piston pump in open-circuit applications for verifying the applicability of the proposed numerical model.

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“…where Ã indicates the mass transfer among various phases inside the CV, which can be determined by referring SA Imagine and Zhou et al, 23,24 as shown in equation (14).…”

Section: Gas Evolution and Transportationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

First attempt to determine the critical inlet pressure for aircraft pumps with a numerical approach that considers vapor cavitation and air aeration

Dong

Wang

Chen³

2020

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

“…The internal forces and moments in the axial piston pump are very difficult to be measured. The pressure ripple is often used as the parameter to be compared with simulation results [16,17]. However, the measured pressure ripple is affected by the pump generated flow ripple and the impedance of hydraulic lines, and the simulated and measured results are usually incomparable.…”

Section: Validation Of the Lp Modelmentioning

confidence: 99%

A Hybrid Lumped Parameters/Finite Element/Boundary Element Model to Predict the Vibroacoustic Characteristics of an Axial Piston Pump

Zhang

et al. 2017

Shock and Vibration

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Low noise axial piston pumps become the rapid increasing demand in modern hydraulic fluid power systems. This paper proposes a systematic approach to simulate the vibroacoustic characteristics of an axial piston pump using a hybrid lumped parameters/finite element/boundary element (LP/FE/BE) model, and large amount of experimental work was performed to validate the model. The LP model was developed to calculate the excitation forces and was validated by a comparison of outlet flow ripples. The FE model was developed to calculate the vibration of the pump, in which the modeling of main friction pairs using different spring elements was presented in detail, and the FE model was validated using experimental modal analysis and measured vibrations. The BE model was used to calculate the noise emitted from the pump, and a measurement of sound pressure level at representative field points in a hemianechoic chamber was conducted to validate the BE model. Comparisons between the simulated and measured results show that the developed LP/FE/BE model is effective in capturing the vibroacoustic characteristics of the pump. The presented approach can be extended to other types of fluid power components and contributes to the development of quieter fluid power systems.

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“…Xu et al [8] studied the erosion damage of the valve plate and proposed a computational fluid dynamics (CFD) turbulence model to predict pump dynamic characteristics. Yin et al [9] proposed a complete numerical model, which counted the compressibility effects of fluids and the dynamic processes of gas, steam, pseudo-cavitation and cavitation failure. Lijian S. and Jun Z.…”

Section: Introductionmentioning

confidence: 99%

Flow Ripple Reduction of Axial-Piston Pump by Structure Optimizing of Outlet Triangular Damping Groove

et al. 2020

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The triangular damping groove on the valve plate can effectively reduce the discharge flow ripple of an axial piston pump, which structural parameters will directly affect the pump’s dynamic characteristics. Herein, a multi-parameter data-based structure optimizing method of the triangular damping groove is investigated using numerical models and simulation results. The mathematical models of a nine-piston pump are proposed and developed by MATLAB/Simulink, and the simulation results are verified by experimental results. Then, the effects of width angle and depth angle on discharge flow are analyzed. Based on the analysis of groove parameters, an optimizing index, which considering the time domain characteristics of discharge flow, is proposed. As results show, comparing with the initial specific groove structure, the amplitude of flow ripple is reduced from 14.6% to 9.8% with the optimized structure. The results demonstrate that the outlet flow ripple can be significantly reduced by the optimized structure, and the proposed multi-parameter optimizing method can play a guiding significance in the design of low-ripple axial piston pumps.

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Numerical and experimental study of cavitation performance in sea water hydraulic axial piston pump

Cited by 24 publications

References 39 publications

First attempt to determine the critical inlet pressure for aircraft pumps with a numerical approach that considers vapor cavitation and air aeration

First attempt to determine the critical inlet pressure for aircraft pumps with a numerical approach that considers vapor cavitation and air aeration

A Hybrid Lumped Parameters/Finite Element/Boundary Element Model to Predict the Vibroacoustic Characteristics of an Axial Piston Pump

Flow Ripple Reduction of Axial-Piston Pump by Structure Optimizing of Outlet Triangular Damping Groove

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