CFD Investigation into Flow Characteristics of a Special Splash Lubrication in Light Helicopters
Abstract
:1. Introduction
2. Methodology
2.1. Governing Equations
2.2. Multiphase Flow Model
2.3. Turbulence Model
2.4. Numerical Method
2.5. Numerical Model and Grids
3. Experimental Validation
3.1. Test Rig
3.2. Experimental Test
4. Results
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Number of Grids | Mean Flow Rate of the Monitoring Surface (g/s) | |
---|---|---|
Case 1 | 1,172,836 | 23.3 |
Case 2 | 2,350,738 | 19.3 |
Case 3 | 3,885,689 | 18.4 |
Case 4 | 5,976,802 | 18.1 |
Inner Diameter d (mL) | Length of Installation End L (mL) | Angle of Oil-Guiding Tube θ (°) | Rotation Speed V (r/min) | Oil-Immersion Depth l (mL) | |
---|---|---|---|---|---|
Reference case | 7 | 12 | 90 | 600 | 45 |
Inner diameter 1 | 3 | 12 | 90 | 600 | 45 |
Inner diameter 2 | 5 | 12 | 90 | 600 | 45 |
Length of installation end 1 | 7 | 15 | 90 | 600 | 45 |
Length of installation end 2 | 7 | 18 | 90 | 600 | 45 |
Angle of oil-guiding tube 1 | 7 | 12 | 70 | 600 | 45 |
Angle of oil-guiding tube 2 | 7 | 12 | 110 | 600 | 45 |
Rotation speed 1 | 7 | 12 | 90 | 400 | 45 |
Rotation speed 2 | 7 | 12 | 90 | 800 | 45 |
Oil-immersion depth 1 | 7 | 12 | 90 | 600 | 40 |
Oil-immersion depth 2 | 7 | 12 | 90 | 600 | 50 |
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Liu, H.; Dai, Y.; Jia, J.; Zhu, X. CFD Investigation into Flow Characteristics of a Special Splash Lubrication in Light Helicopters. Aerospace 2022, 9, 482. https://doi.org/10.3390/aerospace9090482
Liu H, Dai Y, Jia J, Zhu X. CFD Investigation into Flow Characteristics of a Special Splash Lubrication in Light Helicopters. Aerospace. 2022; 9(9):482. https://doi.org/10.3390/aerospace9090482
Chicago/Turabian StyleLiu, He, Yu Dai, Jifu Jia, and Xiang Zhu. 2022. "CFD Investigation into Flow Characteristics of a Special Splash Lubrication in Light Helicopters" Aerospace 9, no. 9: 482. https://doi.org/10.3390/aerospace9090482