Numerical Study of a Flexible Riser Lock-in Phenomenon by Using 2-Way FSI Method

Arifin; A. Sulisetyono; W. H. Nugroho

doi:10.1088/1755-1315/1473/1/012011

Numerical Study of a Flexible Riser Lock-in Phenomenon by Using 2-Way FSI Method

Arifin^*
, A. Sulisetyono^*
, W. H. Nugroho

^*Corresponding author for this work

Department of Naval Architecture
Institut Teknologi Sepuluh Nopember
National Research and Innovation Agency Republic of Indonesia

Research output: Contribution to journal › Conference article › peer-review

Abstract

The riser that is operated on the offshore oil and gas exploration in deep water, have complicated behaviour under the influence current load. Vortices are shed along the riser's surface when it travels against the sea current, creating a transverse force that varies frequently on the riser vibration known as the VIV. In this paper, several problems related to frequency natural of the riser and frequency of vortex shedding at several current velocities were studied regarding the lock-in phenomenon of riser. The study was carried out numerically by using the 2-way Fluid Structure Interaction method. The simulation results show the potential for lock-in to occur at certain fluid velocity, namely V=0.2 m/s and 0.4 m/s, which produce vortex shedding frequencies that are close to the natural frequency of the structure, namely fn-2=2.455 Hz and fn-3=4.057 Hz.

Original language	English
Article number	012011
Journal	IOP Conference Series: Earth and Environmental Science
Volume	1473
Issue number	1
DOIs	https://doi.org/10.1088/1755-1315/1473/1/012011
Publication status	Published - 2025
Event	Joint Conference of 12th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management, ISOCEEN 2024 in Conjunction with the 1st International Conference on Medicine, Marine Technology, and Social Science, ICoMMeS 2024: Development of Marine Medicine, Social Science, and Environmental Technology for Sustainable Blue Economy - Hybrid, Surabaya, Indonesia Duration: 27 Sept 2024 → …

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10.1088/1755-1315/1473/1/012011

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title = "Numerical Study of a Flexible Riser Lock-in Phenomenon by Using 2-Way FSI Method",

abstract = "The riser that is operated on the offshore oil and gas exploration in deep water, have complicated behaviour under the influence current load. Vortices are shed along the riser's surface when it travels against the sea current, creating a transverse force that varies frequently on the riser vibration known as the VIV. In this paper, several problems related to frequency natural of the riser and frequency of vortex shedding at several current velocities were studied regarding the lock-in phenomenon of riser. The study was carried out numerically by using the 2-way Fluid Structure Interaction method. The simulation results show the potential for lock-in to occur at certain fluid velocity, namely V=0.2 m/s and 0.4 m/s, which produce vortex shedding frequencies that are close to the natural frequency of the structure, namely fn-2=2.455 Hz and fn-3=4.057 Hz.",

author = "Arifin and A. Sulisetyono and Nugroho, \{W. H.\}",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; Joint Conference of 12th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management, ISOCEEN 2024 in Conjunction with the 1st International Conference on Medicine, Marine Technology, and Social Science, ICoMMeS 2024: Development of Marine Medicine, Social Science, and Environmental Technology for Sustainable Blue Economy ; Conference date: 27-09-2024",

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doi = "10.1088/1755-1315/1473/1/012011",

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journal = "IOP Conference Series: Earth and Environmental Science",

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AU - Arifin,

AU - Sulisetyono, A.

AU - Nugroho, W. H.

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2025

Y1 - 2025

N2 - The riser that is operated on the offshore oil and gas exploration in deep water, have complicated behaviour under the influence current load. Vortices are shed along the riser's surface when it travels against the sea current, creating a transverse force that varies frequently on the riser vibration known as the VIV. In this paper, several problems related to frequency natural of the riser and frequency of vortex shedding at several current velocities were studied regarding the lock-in phenomenon of riser. The study was carried out numerically by using the 2-way Fluid Structure Interaction method. The simulation results show the potential for lock-in to occur at certain fluid velocity, namely V=0.2 m/s and 0.4 m/s, which produce vortex shedding frequencies that are close to the natural frequency of the structure, namely fn-2=2.455 Hz and fn-3=4.057 Hz.

AB - The riser that is operated on the offshore oil and gas exploration in deep water, have complicated behaviour under the influence current load. Vortices are shed along the riser's surface when it travels against the sea current, creating a transverse force that varies frequently on the riser vibration known as the VIV. In this paper, several problems related to frequency natural of the riser and frequency of vortex shedding at several current velocities were studied regarding the lock-in phenomenon of riser. The study was carried out numerically by using the 2-way Fluid Structure Interaction method. The simulation results show the potential for lock-in to occur at certain fluid velocity, namely V=0.2 m/s and 0.4 m/s, which produce vortex shedding frequencies that are close to the natural frequency of the structure, namely fn-2=2.455 Hz and fn-3=4.057 Hz.

UR - https://www.scopus.com/pages/publications/105004204806

U2 - 10.1088/1755-1315/1473/1/012011

DO - 10.1088/1755-1315/1473/1/012011

M3 - Conference article

AN - SCOPUS:105004204806

SN - 1755-1307

VL - 1473

JO - IOP Conference Series: Earth and Environmental Science

JF - IOP Conference Series: Earth and Environmental Science

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T2 - Joint Conference of 12th International Seminar on Ocean and Coastal Engineering, Environmental and Natural Disaster Management, ISOCEEN 2024 in Conjunction with the 1st International Conference on Medicine, Marine Technology, and Social Science, ICoMMeS 2024: Development of Marine Medicine, Social Science, and Environmental Technology for Sustainable Blue Economy

Y2 - 27 September 2024

ER -

Numerical Study of a Flexible Riser Lock-in Phenomenon by Using 2-Way FSI Method

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