Motion Simulation of FPSO in Waves through Numerical Sensitivity Analysis

Kim, Je-in; Park, Il-Ryong; Suh, Sung-Bu; Kang, Yong-Duck; Hong, Sa Young; Nam, Bo Woo

doi:10.26748/ksoe.2018.6.32.3.166

Cited by 4 publications

(1 citation statement)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Kim et al (2018)은 격자수와 계산시간 간격 등의 수치조건에서 소파영역 내 파 감쇄감수를 사용하여 2차원 문제의 수치 민감도 분석하 였으며, 추가적으로 Wave forcing 기법을 적용하여 3차원 파랑 중 FPSO 운동 문제에 적용하여 타당성을 검토하였다. 본 연구 에서는 계산 영역을 짧게하여 격자수를 줄일 수 있는 Wave forcing 방법을 사용하였으며, Forcing 영역은 유입경계면과 유 출경계면에서 각각 파장의 1개(1.0λ)와 1.5개(1.5λ) 크기를 설 정하여 계산하였다(Enger et al, 2014;Kim et al, 2018). 값이 0.25~0.30 되도록(Kim et al, 2018)    씩 증가시켰으며 식은 하 기와 같다.…”

unclassified

Study on Roll Motion Characteristics of a Rectangular Floating Structure in Regular Waves

Kim¹,

Jung²,

Park³

et al. 2019

J. Ocean Eng. Technol.

Self Cite

View full text Add to dashboard Cite

Ikeda et al.(1977)는 이론 및 실험적 방법을 사용하여 횡동요 추정과 함께 2차원 물체의 횡동요의 와류감쇄 (Eddy making damping)항이 주파수의 제곱에 비례함을 제시하였 다. Chakrabarti(2001)는 횡동요 감쇄현상을 선체표면의 마찰감쇄 (Skin friction damping), 와류감쇄(Eddy making damping), 조파감쇄 (Wave damping), 부가물 부착으로 인한 감쇄(Bilge keel damping) 로 구분하였다.

show abstract

unclassified

Study on Roll Motion Characteristics of a Rectangular Floating Structure in Regular Waves

Kim¹,

Jung²,

Park³

et al. 2019

J. Ocean Eng. Technol.

Self Cite

View full text Add to dashboard Cite

show abstract

Numerical Prediction of the Powering Performance of a Car-Ferry in Irregular Waves for Safe Return to Port(SRtP)

Park¹,

Kim²,

Suh³

et al. 2019

J. Ocean Eng. Technol.

View full text Add to dashboard Cite

This paper considers a numerical assessment of the self-propulsion performance of a damaged ferry carrying cars in irregular waves. Computational fluid dynamics(CFD) simulations were performed to see whether the ferry complied with the Safe Return to Port (SRtP) regulations of Lloyd's register, which require that damaged passenger ships should be able to return to port with a speed of 6 knots (3.09 m/s) in Beaufort 8 sea conditions. Two situations were considered for the damaged conditions, i.e., 1) the portside propeller was blocked but the engine room was not flooded and 2) the portside propeller was blocked and one engine room was flooded. The self-propulsion results for the car ferry in intact condition and in the damaged conditions were assessed as follows. First, we validated that the portside propeller was blocked in calm water based on the available experimental results provided by KRISO. The active thrust of starboard propeller with the portside propeller blocked was calculated in Beaufort 8 sea conditions, and the results were compared with the experimental results provided by MARIN, and there was reasonable agreement. The thrust provided by the propeller and the brake horsepower (BHP) with one engine room flooded were compared with the values when the engine room was not flooded. The numerical results were compared with the maximum thrust of the propeller and the maximum brake horse power of the engine to determine whether the damaged car ferry could attain a speed of 6 knots(3.09 m/s).

show abstract

Experimental and Numerical Study on the Characteristics of Motion and Load for a Floating Solar Power Farm under Regular Waves

Lee

Paik

Lee

et al. 2022

JMSE

View full text Add to dashboard Cite

Recently, the demand for floating solar power farms in lakes and coasts (rather than on land) has been increasing rapidly. It is important to develop a numerical analysis technique that considers environmental conditions to predict structural stability and accurate motion response while designing a floating solar power farm. In this study, we performed a comparison under conditions similar to those of the Inha University towing tank (IUTT) model test to verify the numerical analysis method. The results revealed that heave and pitch movements were dominant under head sea conditions. Relative behavior occurred because of the hinge connection of each unit, and complex motion characteristics appeared depending on the wave conditions. The numerical method was verified based on the motion response and load of the floating solar farm. The validity of the results was also confirmed.

show abstract

Motion Simulation of FPSO in Waves through Numerical Sensitivity Analysis

Cited by 4 publications

References 11 publications

Study on Roll Motion Characteristics of a Rectangular Floating Structure in Regular Waves

Study on Roll Motion Characteristics of a Rectangular Floating Structure in Regular Waves

Numerical Prediction of the Powering Performance of a Car-Ferry in Irregular Waves for Safe Return to Port(SRtP)

Experimental and Numerical Study on the Characteristics of Motion and Load for a Floating Solar Power Farm under Regular Waves

Contact Info

Product

Resources

About