Viscous Loss Analysis of the Flooded Electro-Hydrostatic Actuator Motor under Laminar and Turbulent Flow States
Abstract
:1. Introduction
2. Method for Judging Cooling Fluid Flow State
3. Theoretical Analysis of Air Gap Viscous Loss
3.1. Calculation Method of Viscous Loss in Laminar State
3.2. Calculation Method of Viscous Loss in Turbulent State
4. Experimental Results
5. Discussion
Author Contributions
Funding
Conflicts of Interest
Appendix A
References
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Parameters | Value | Unit |
---|---|---|
Radius of the rotor | m | |
Radius of the stator | m | |
Length of the air gap L | m | |
Density of the oil | kg/m3 | |
Dynamic viscosity of the oil | N s/m2 | |
Kinematic viscosity of the oil | m2/s |
Simulation Settings | Setup | |
---|---|---|
General | Solver Type | Pressure-Based |
Velocity Formulation | Absolute | |
Time | Steady | |
Models | Viscous | Laminar/Standard k-epsilon and Standard Wall Functions |
Boundary | End Face 1 | Symmetry |
End Face 2 | Symmetry | |
Rotor | Moving Wall (Rotation Speed can be set) | |
Stator | Wall (No Slip) | |
Method | Schema | SIMPLEC |
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Li, Y.; Jiao, Z.; Yu, T.; Shang, Y. Viscous Loss Analysis of the Flooded Electro-Hydrostatic Actuator Motor under Laminar and Turbulent Flow States. Processes 2020, 8, 975. https://doi.org/10.3390/pr8080975
Li Y, Jiao Z, Yu T, Shang Y. Viscous Loss Analysis of the Flooded Electro-Hydrostatic Actuator Motor under Laminar and Turbulent Flow States. Processes. 2020; 8(8):975. https://doi.org/10.3390/pr8080975
Chicago/Turabian StyleLi, Yanpeng, Zongxia Jiao, Tian Yu, and Yaoxing Shang. 2020. "Viscous Loss Analysis of the Flooded Electro-Hydrostatic Actuator Motor under Laminar and Turbulent Flow States" Processes 8, no. 8: 975. https://doi.org/10.3390/pr8080975