Numerical simulation and analysis of temperature and flow field of high-speed axial piston motor pump

• Main Authors: Dianrong Gao, Zongyi Zhang, Yanan Sun, Senhao Xu, Jingcheng Liu, Yan Zhang
• Format: Article
• Language: English
• Published: Wiley 2018-10-01
• Series: The Journal of Engineering
• Subjects: hydraulic motors; pistons; flow simulation; numerical analysis; temperature distribution; pumps; hydraulic systems; computational fluid dynamics; cooling; heat transfer; finite volume methods; different cooling runners; oil flow regularity; long-strip runner; ambient temperature; average temperature rise; flow field; high-speed axial; liquid–solid mathematical model; axial piston hydraulic motor pump; finite volume method
• Online Access: https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8959

Based on the theories of heat transfer and the method of computational fluid dynamics, a liquid–solid mathematical model of heat transfer of an axial piston hydraulic motor pump is constructed in this study. Through the finite volume method, the model with different cooling runners has been solved. Meanwhile, the oil flow regularity of runner and temperature distribution of the motor pump and oil duct has been obtained. On the basis of the model of long-strip runner, the influence of ambient temperature on the motor pump's temperature rise has been analysed. The result shows that the cooling channels on the housing of the hydraulic motor pump effectively reduce the temperature rise, and a long-strip channel is for optimum cooling. The average temperature rise of the motor pump increases linearly with the increase of ambient temperature.