Thermal-hydraulic model of aerial piston pump was established based on analysis of power loss and heat transfer. Power loss model of pump was obtained, considering the influence of load pressure, input rotational speed, swash plate angel and oil viscosity. With the analysis of heat transfer in pump, the thermal-hydraulic model of pump was established to display the temperature change in all parts of the pump, which takes advantage of formula of temperature change in control volume. A hydraulic system, consisting of piston pump was simulated with Dymola to show efficiency and power loss of pump at different input rotational speed and load pressure. Temperature rising in different parts of pump at different input rotational speed and supply flow was analyzed.The result shows that the input rotational speed and load pressure impact the efficiency and power loss of pump, and temperature rising in pump presents differently in characteristics at different input rotational speed and supply flow.
Li Yonglin, Xu Haojun, Cao Keqiang, Hu Liangmou.Efficiency analysis and thermal-hydraulic modeling of aerial piston pump at whole work condition[J] JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(12): 1469-1472