서울대학교 해양유체역학연구실 - Sloshing

Research interests

Core Research
- - Fundamental researches for sloshing flows and sloshing-induced impact loads
Major Development / Accomplishment
- - Development of statistical analysis method for slosh-induced impact pressure
- - Study on the effect of the density ratio and phase transition
  : Realistic LNG sloshing flow
- - Sensitivity study on sloshing model test
  : Measurement location, sampling rate, repeatability, and time window
- - Study on scale effect of sloshing impact pressure
- - Sloshing impact pressure prediction using machine learning
- - Establish unified procedure of sloshing load analysis for Korean industries
- Statistical post-processing of measured sloshing impacts
- Influence of density ratio for sloshing impact pressure
- Repeatability of sloshing model test
- Comparison of test results of various scaled tanks

Core Research
- - Investigate local flow phenomena during sloshing impact and drop tests
Major Development / Accomplishment
- - Establish 2D/3D PIV measuring system
- - Synchronization of PIV image capturing and pressure measuring
- - Comparison of sloshing impact pressure and velocity between PIV experiment and CFD
- - Establish drop test facility for boiling water impact
- - Comparison of impact pressure between room temperature and boiling water
- 2D-PIV synchronization
- Comparison of velocity field between PIV & CFD
- Drop test using boiling water

Core Research
- - Industrial sloshing experiment for fundamental research and certificate-purpose model tests
Selected Projects
- - Industrial JIP for sloshing facility (2009-2010, HHI, SHI, DSME, STX, KR)
- - Anti-blanket system I (2010), II (2011) (SHI)
- - 160K LNGC I (2011), II (2012-2013) (SHI)
- - FLNG sloshing analysis procedure (2011, HHI)
- - Anti-rolling tank (2012, SHI)
- - Independent LNG Tank (2012-2013, STX)
- - PRESLO JIP (2012-2014, HHI, SHI, DSME, STX, KR, ABS, LR, ClassNK)
- - Load prediction for FLNG cargo (2013-2014, HHI)
- - Two FLNG tank tests (2015, DSME)
- - LNG fuel tank tests (2016, DSME)
- - Four types of tanks (FLSO, VLEC, LNGC, and LNG fuel tank) (2016, SHI)
- - Comparative assessment for two LNGC tanks (2017, HHI)
- - Effect of bulkhead for type C tank (2018, POSCO)
- - Sloshing impact according to the tank location (2018, DSME)
- - 기타 현대 중공업 모델 실험
- - LNGC model tests for long-term assessment (2019-2020, HHI, SHI, DSME, KR)
- Anti-Sloshing Blanket System (SHI)
- Sloshing Model Test for 138K LNG Cargo Tank (DSME)
- Sloshing in IMO B-Type Tank (STX)
- Sloshing Model Test for Fuel Tank of Container Ship (HHI)

Core Research
- - Fundamental and industrial research for sloshing flows and sloshing-induced impact loads
Main Test Equipment
- - Small-size motion platform (1.5-ton payload)
- - Mid-size motion platform (5-ton payload)
- - Large-size motion platform (14-ton payload)
- - High capacity pressure measurement system with DAQ (500 high-performance sensors) and 3-step large-capacity storage system (348 TB)
- - PIV with 2 high speed cameras and synchronized pressure-flow measurement system
- - Model test facility for high density-ratio test
- - Drop facility for hydroelasticity test of LNG insulation system
- - Fiber optical and strain-gauge sensors for structural response measurement
- - Heavy gas test facility
Related Projects
- - Korean national ISTD (Industrial Strategic Technology Development) project (2009~2013)
- - Industrial JIP for sloshing test facility (2009~2010)
- - Sponsors: MOTIE, HHI, SHI, DSME, STX, KR
- Motion platforms
- PIV measurement system
- Drop test using real-scale insulation box