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Digital twin
Research interests
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Digital twin
Overview
WISH
Sloshing
Green ship
CFD applications
Offshore hydrodynamics
Dynamic stability
Naval research
Digital twin
콘텐츠영역
Research Interest 게시판
overview
Wave Field Analysis
SNU-SISO
Operational Guidance
Core Research
- Establishment of operational guidance based on operational efficiency and risk assessment
Major Development / Accomplishment
- Development of efficient and accurate prediction method for the environmental loads in a seaway
- Establishment of a database for the nonlinear ship dynamic response
- Development of the decision-support system for efficient and safe ship operation
Numerical Methods / Approaches
- Empirical-asymptotic approach for wave added resistance
- Enhanced asymptotic formula (SNU formula)
- Weakly-nonlinear time-domain formulation
System outline
Computations of dynamic stability in waves
Operational guidance
Core Research
- Scenario-based real-time seakeeping and maneuvering coupled analysis in waves
Major Development / Accomplishment
- Development of real-time seakeeping-maneuvering coupled simulation program
- Development of autopilot system of ship rudder and propeller based on the trajectory tracking method
- Development of scenario-based prediction system for ship operation
Numerical Methods / Approaches
- Impulse response function method
- 4-DoF modular type maneuvering equation
- Two-time scale model
- PID-based trajectory tracking method
System outline
Autopilot module
Seakeeping-maneuvering coupled analysis
Core Research
- Real-time wave field reconstruction and prediction based on marine radar measurement data
Major Development / Accomplishment
- Development of X-band wave radar measurement-based wave field reconstruction
- Development of enhanced significant wave height estimation method
- Development of ocean wave-field predictable zone analysis
Numerical Methods / Approaches
- 3D FFT-based spectral analysis
- Radar image intensity modification
- Mean surface slope estimation
- Spatiotemporal data-based wave prediction
System outline
Wave field reconstruction
Wave prediction
Core Research
- Real-time digital twin simulation for ship operation
Major Development / Accomplishment
- Development of wave reconstruction & prediction method for ocean wave field
- Development of real-time prediction system for ship hydrodynamic performance
- Development of decision-support operational guidance system based on the resistance prediction and risk assessment
Numerical Methods / Approaches
- 3D FFT-based wave reconstruction
- Short-term deterministic wave field prediction
- Impulse response function method
- Two-time scale model
- PID-based trajectory tracking method
- SNU formula
System outline
Scenario-based prediction examples
User-interface of digital twin system