1. Numerical analysis and experimental validation of the coupled thermal effects in swashplate type axial piston machines.
- Author
-
Mukherjee, Swarnava, Shang, Lizhi, and Vacca, Andrea
- Subjects
- *
MACHINE performance , *NUMERICAL analysis , *FLOATING bodies , *REYNOLDS equations , *ISOTHERMAL efficiency , *CONSERVATION of mass - Abstract
This paper explores the significant impact of thermal effects on the performance of Swashplate-Type Axial Piston Machines, a crucial aspect often overlooked in current numerical analyses primarily focused on energy efficiency prediction and machine design optimization. Existing methods commonly neglect or only partially account for thermal dynamics and heat transfer within both fluid and solid domains, resulting in inaccurate power loss predictions and hindering designers' ability to enhance energy efficiency and durability. To address this gap, we present a comprehensive thermal model that fully couples the thermal behavior of the entire machine. This model incorporates mass and energy conservation in displacement chambers and slipper pockets, dynamics of floating bodies, Reynolds equation, and energy conservation in lubricating interfaces. Furthermore, it considers heat transfer in floating bodies and thermo-elasto-hydrodynamic effects induced by pressure and thermal deformation. Validation against experimental data demonstrates the accuracy of the model in predicting solid body temperature distribution and overall machine efficiency. By comparing machine efficiencies with an isothermal model, we highlight the critical importance of considering thermal effects. Additionally, our model offers insights into key power loss sources across various operating conditions, contributing to a deeper understanding of machine performance and aiding in future design optimizations. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF