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Abstract In this study, a wireline riser tensioner (WRT) system was dynamically simulated to analyze the dynamic response of the riser string in a mobile offshore drilling unit (MODU) such as a drilling rig or a drillship. The main function of the WRT system is to sustain the tension to avoid buckling, regardless of the MODU motion. The WRT system consists of a tensioner ring, a wireline, pneumatic cylinders, and air pressure vessels (APVs). It reduces the vertical (heave) motion of the top of the riser string caused by the MODU motion. In this study, the equations of motion of the drilling rig and the WRT system were formulated based on multibody system dynamics. The discrete Euler-Lagrange equation was used to formulate the equations of motion. For the external forces, both the hydrostatic and hydrodynamic forces were considered. Several simulations were performed with various sea states to analyze the motion of the riser string and the efficiency of the WRT system. Furthermore, the gas volume inside the APVs was changed to investigate its impact on the efficiency and performance of the WRT system.
Publication Date 2015-09-15
Role Corresponding Author
Category SCI
Impact Factor 1.351

Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Dynamic Simulation of the Wireline Riser Tensioner System for a Mobile Offshore Drilling Unit Based on Multibody System Dynamics", Ocean Engineering, Vol. 106, pp. 485-495, 2015.09.15


  1. No Image 18Jul
    by SyDLab
    in International Journal

    Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Dynamic Simulation of the Wireline Riser Tensioner System for a Mobile Offshore Drilling Unit Based on Multibody System Dynamics", Ocean Engineering, Vol. 106, pp. 485-495, 2015.09.15

  2. No Image 05Aug
    by SyDLab
    in International Journal

    Luman Zhao, Myung-Il Roh, “A Thrust Allocation Method for Efficient Dynamic Positioning of a Semisubmersible Drilling Rig Based on the Hybrid Optimization Algorithm”, Mathematical Problems in Engineering, Vol. 2015, pp. 1-12, 2015.10.01

  3. No Image 20Aug
    by SyDLab
    in International Journal

    Nam-Kug Ku, Myung-Il Roh, "Dynamic Response Simulation of an Offshore Wind Turbine Suspended by a Floating Crane", Ships and Offshore Structures, Vol. 10, No. 6, pp. 621-634, 2015.11.01

  4. No Image 25Aug
    by SyDLab
    in International Journal

    Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, Sol Ha, "Multibody Dynamic Analysis of a Heavy Load Suspended by a Floating Crane with Constraint-based Wire Rope", Ocean Engineering, Vol. 109, pp. 145-160, 2015.11.15

  5. No Image 13Jul
    by SyDLab
    in International Journal

    Ki-Su Kim, Myung-Il Roh, Sol Ha, "Expert System Based on the Arrangement Evaluation Model for the Arrangement Design of a Submarine", Expert Systems with Applications, Vol. 42, No. 22, pp. 8731-8744, 2015.12.01

  6. No Image 16Sep
    by SyDLab
    in International Journal

    Sol Ha, Nam-Kug Ku, Myung-Il Roh, "Event-based Scenario Manager for Multibody Dynamics Simulation of Heavy Load Lifting Operations in Shipyards", International Journal of Naval Architecture and Ocean Engineering, Vol. 8, No. 1, pp. 83-101, 2016.01.01

  7. No Image 26Aug
    by SyDLab
    in International Journal

    Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Simulation of Load Lifting with Equalizers Used in Shipyards", Automation in Construction, Vol. 61, pp. 98-111, 2016.02.01

  8. No Image 24May
    by SyDLab
    in International Journal

    Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, "Lifting Simulation of an Offshore Supply Vessel Considering Various Operating Conditions", Advances in Mechanical Engineering, Vol. 8, No. 6, pp. 1-13, 2016.06.16

  9. No Image 24Mar
    by SyDLab
    in International Journal

    Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Block Turnover Simulation Considering the Interferences between the Block and Wire Ropes in Shipbuilding", Automation in Construction, Vol. 67, pp. 60-75, 2016.07.01

  10. No Image 11Mar
    by SyDLab
    in International Journal

    Jeong-Woo Hong, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Dynamic Simulation of Subsea Equipment Installation Using an Offshore Support Vessel Based on Flexible Multibody System Dynamics", Journal of Marine Science and Technology (Taiwan), Vol. 24, No. 4

  11. No Image 18Apr
    by SyDLab
    in International Journal

    Ki-Su Kim, Myung-Il Roh, "A Submarine Arrangement Design Program Based on the Expert System and the Multistage Optimization", Advances In Engineering Software, Vol. 98, No. 97-111, 2016.08.01

  12. No Image 03Apr
    by SyDLab
    in International Journal

    Sol Ha, Seong-Ho Seo, Myung-Il Roh, Hyun-Kyoung Shin, "Simplified Nonlinear Model for the Weight Estimation of FPSO Plant Topside Using the Statistical Method", Ships and Offshore Structures, Vol. 11, No. 6, pp. 603-619, 2016.09.01

  13. No Image 24Aug
    by SyDLab
    in International Journal

    John-Kyu Hwang, Myung-Il Roh, Ju-Hwan Cha, “Design Modification of a Damaged Free-Fall Lifeboat for FPSO Through Free-Fall Tests”, International Journal of Offshore and Polar Engineering, Vol. 26, No. 4, pp. 417-422, 2016.12.01

  14. No Image 08Oct
    by SyDLab
    in International Journal

    Ju-Sung Kim, Myung-Il Roh, Seung-Ho Ham, “A Method for Intermediate Flooding and Sinking Simulation of a Damaged Floater in Time Domain”, Journal of Computational Design and Engineering, Vol. 4, No. 1, pp. 1-13, 2017.01.01

  15. No Image 11Aug
    by SyDLab
    in International Journal

    Sol Ha, Tae-Sub Um, Myung-Il Roh, Hyun-Kyoung Shin, “A Structural Weight Estimation Model of FPSO Topsides Using an Improved Genetic Programming Method”, Ships and Offshore Structures, Vol. 12, No. 1, pp. 43-55, 2017.01.01

  16. No Image 29Nov
    by SyDLab
    in International Journal

    Sung-Kyoon Kim, Myung-Il Roh, Ki-Su Kim, “Evaluation of Feasibility Index in the Arrangement Design of an Offshore Topside based on the Automatic Transformation of Experts’ Knowledge and the Fuzzy Logic”, Ocean Engineering, Vol. 130, 2017.01.15

  17. No Image 31Mar
    by SyDLab
    in International Journal

    Seong-Hoon Kim, Myung-Il Roh, Ki-Su Kim, Min-Jae Oh, “Big Data Platform Based on Hadoop and Application to Weight Estimation of FPSO Topside”, Journal of Advanced Research in Ocean Engineering, Vol. 3, No. 1, pp. 32-40, 2017.03.01

  18. No Image 20Oct
    by SyDLab
    in International Journal

    Sung-Kyoon Kim, Myung-Il Roh, Ki-Su Kim, “Arrangement Method of Offshore Topside Based on an Expert System and Optimization Technique”, Journal of Offshore Mechanics and Arctic Engineering, Vol. 139, No. 2, pp. 1-19, 2017.04.01

  19. No Image 26Dec
    by SyDLab
    in International Journal

    Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, Chan-Young Lee, “Performance Analyses of Naval Ships Based on Engineering Level of Simulation at the Initial Design Stage”, IJNAOE, Vol. 9, No. 4, pp. 446-459, 2017.07.01

  20. No Image 13Jul
    by SyDLab
    in International Journal

    Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, “Case Study of Detection and Maneuvering Performance of Naval Ships Using Engagement Simulation of Engineering Level”, Ocean Systems Engineering, Vol. 7, No. 3, pp. 247-273, 2017.09.01

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