Numerical Simulation of the Motion of a Large Scale Unmanned Surface Vessel in High Sea State Waves
Abstract
:1. Introduction
2. Numerical Model
2.1. Governing Equations and Turbulence Models
2.2. USV Model
2.3. Degree of Freedom Model
2.4. Computational Domain and Boundary Conditions
2.5. Computational Mesh and Sensitivity Study
3. Numerical Wave Tank and Verification
3.1. Numerical Wave Tank
3.2. Numerical Wave Tank Verification
4. Results
4.1. Six Degrees of Freedom Motion with Time History
4.2. Resistance
4.3. The Attitude of USV in Waves at Typical Times under 7 Level Sea State
4.4. Pressure Distribution at the Bottom of the USV at Typical Times under 7 Level Sea State
4.5. Free Surface Waveform and USV Three-Dimensional Attitude
4.6. Boundary Layer
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameters | Symbol | Value |
---|---|---|
Length of overall (m) | LOA | 42.00 |
Length between perpendiculars (m) | Lpp | 41.05 |
Breadth (m) | B | 12.00 |
Design draft (m) | T | 1.45 |
Depth (m) | D | 4.50 |
Boundary Name | Boundary Conditions |
---|---|
Inlet | 1. Velocity inlet; 2. Fifth order Stokes waves based on VOF components of water vapor; 3. The relative velocity of the USV is 18 kn; 4. The turbulence intensity is 0.01. |
Outlet | 1. Pressure outlet; 2. Fifth order Stokes waves based on VOF components of water vapor; 3. Fifth order Stokes wave hydrodynamic pressure. |
Bottom | Same as the inlet boundary condition |
USV hull | No-slip wall |
Boundary of Overset region | Overset mesh interface |
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Huang, S.; Liu, W.; Luo, W.; Wang, K. Numerical Simulation of the Motion of a Large Scale Unmanned Surface Vessel in High Sea State Waves. J. Mar. Sci. Eng. 2021, 9, 982. https://doi.org/10.3390/jmse9090982
Huang S, Liu W, Luo W, Wang K. Numerical Simulation of the Motion of a Large Scale Unmanned Surface Vessel in High Sea State Waves. Journal of Marine Science and Engineering. 2021; 9(9):982. https://doi.org/10.3390/jmse9090982
Chicago/Turabian StyleHuang, Shuo, Weiqi Liu, Wanzhen Luo, and Kai Wang. 2021. "Numerical Simulation of the Motion of a Large Scale Unmanned Surface Vessel in High Sea State Waves" Journal of Marine Science and Engineering 9, no. 9: 982. https://doi.org/10.3390/jmse9090982