|Table of Contents|

Simulation analysis of pulsation characteristics for axial piston pump(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2020年05期
Page:
27-34
Research Field:
研究与设计
Publishing date:

Info

Title:
Simulation analysis of pulsation characteristics for axial piston pump
Author(s):
DONG Meng1; TAN Yonghua1; 2; LIANG Junlong3; WANG Ying3
(1.Science and Technology on Liquid Rocket Engine Laboratory, Xi’an Aerospace Propulsion Institute, Xi’an 710100, China; 2.Academy of Aerospace Propulsion Technology, Xi’an 710100, China; 3.Xi’an Aerospace Propulsion Institute, Xi’an 710100, China)
Keywords:
axial piston pump;  pulsation characteristics;  mathematical model;  simulation model;  AMESim;  MATLAB
PACS:
TH137
DOI:
-
Abstract:
Aiming at analyzing the pulsation characteristics of axial piston pump, its mathematical and simulation models were established, and the pulsation characteristics were analyzed according to the simulation results.Firstly, the sub-models of cylinder inertia, piston motion, piston chamber and overflow area of oil plate were established to form the overall mathematical model of pump.Next, considering the change of fluid properties and the oil leakage factors, the simulation model of piston pump was built by HCD library of AMESim. Besides considering the change of bulk modulus and flow coefficient with pressure in fluid properties, the mathematical model was converted into a simulation model by MATLAB program.The simulation results of two methods are basically the same, indicating that the oil leakage and other factors have a small effect on the simulation results.In addition, the simulation results show that the pressure pulsation mode is consistent with the flow, and the pump outlet pressure and the pulsation amplitude increase with the rotation speed and the swash plate inclination angle, while the pulsation frequency only increase with the rotation speed and is not affected by the inclination angle of swashplate.Finally, the model is verified by comparing the simulation and test data and the pulse amplitude envelope error is 2.1%.The two simulation methods provide different approaches for the modeling of piston pump.

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Last Update: 2020-10-20