Effect of Wave Load on Decompression of Underwater Workers: CFD-VPM Simulation
- Lee, Woo Dong; Kang, Choonghyun; Hong, Sungnam; Lee, Tak Kee; Lee, Jooyong
- Issue Date
- COASTAL EDUCATION & RESEARCH FOUNDATION
- Underwater safety; wave action; diving simulation; numerical wave tank; decompression model
- JOURNAL OF COASTAL RESEARCH, pp.614 - 618
- Journal Title
- JOURNAL OF COASTAL RESEARCH
- Start Page
- End Page
- Hydrodynamic pressure from cyclic wave action causes water pressure increases and vibration, and these pressure changes can have a significant impact on underwater workers in high-pressure environments. This study investigated the impact of wave loading on decompression procedures for underwater workers using a coupled CFD-VPM. Computational Fluid Dynamics (CFD) were used to simulate wave propagation, and the Varying Permeability Model (VPM) was used to simulate the dive profile. Results of the wave propagation simulation showed that wave height and nonlinearity increased due to shoaling when approaching a beach, and the period was shortened. The maximum dynamic pressure head exceeded 1 m at depths less than 45 m and reached 10.3 m at a depth of 3 m. Simulations of the dive profile revealed that decompression time increased by 11 m and 9 s (28.36 %) under extraordinary wave conditions when underwater work was performed for 2 hours at a depth of 20 m. Furthermore, decompression time increased by 12 min and 40 s (10 %) at a working depth of 30 m. For safe underwater work operations under extraordinary wave conditions, decompression procedures should account for the pressure rise and vibration caused by wave action.
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- 해양과학대학 > 조선해양공학과 > Journal Articles
- 해양과학대학 > 해양토목공학과 > Journal Articles
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