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

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.

Inspec keywords: cooling; pistons; hydraulic motors; finite volume methods; temperature distribution; numerical analysis; pumps; heat transfer; hydraulic systems; flow simulation; computational fluid dynamics

Other keywords: computational fluid dynamics; temperature distribution; different cooling runners; average temperature rise; flow field; oil flow regularity; axial piston hydraulic motor pump; long-strip runner; high-speed axial; heat transfer; finite volume method; ambient temperature; liquid–solid mathematical model

Subjects: Mechanical components; Fluid mechanics and aerodynamics (mechanical engineering); General fluid dynamics theory, simulation and other computational methods; Applied fluid mechanics; Numerical analysis

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