The estimation of the motion response of a floating semi-submersible type offshore platform for a desalination plant, of capacity 10 million litres per day (MLD) of fresh water, is the focus of the study. The platform needs station keeping by a mooring system using a spar moored in deep water. To cater to these requirements, several design configurations of the semi-submersible were tried out for their hydrodynamic performance in order to choose the best among them, in all cases keeping the cost of components at reasonable levels. The hydrodynamic analysis of the platforms was carried out using the software WAMIT. The natural heave period was the main criterion in finalizing the configuration of the semi-submersible because it has greatest impact on keeping the downtime of platform operation to a minimum. WAMIT yields unrealistically high RAO that is attributed to the effect of viscous damping not being incorporated in the analysis. Experimental investigation was carried out to find the viscous damping coefficient of the configuration of the semi-submersible that was finally chosen among a few alternatives. A 1:50 scale model was tested in the 4m flume at the Department of Ocean Engineering, I.I.T Madras. Free oscillation tests were carried out to find the damping coefficient and natural heave period. Use of experimentally obtained damping values in WAMIT yielded excellent comparison with experimentally obtained response values (RAOs). On the basis of the present work, configuration of a semi-submersible having six rectangular columns and two rectangular pontoons has been finalized for the desalination plant.
Skip Nav Destination
ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2011
Rotterdam, The Netherlands
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4438-0
PROCEEDINGS PAPER
Hydrodynamic Analysis of Semisubmersibles for a Large Scale Desalination Plant Available to Purchase
R. Saravanan,
R. Saravanan
National Institute of Ocean Technology, Chennai, India
Search for other works by this author on:
S. K. Bhattacharyya,
S. K. Bhattacharyya
Indian Institute of Technology Madras, Chennai, India
Search for other works by this author on:
R. Panneer Selvam,
R. Panneer Selvam
Indian Institute of Technology Madras, Chennai, India
Search for other works by this author on:
Srinivasan Chandrasekaran
Srinivasan Chandrasekaran
Indian Institute of Technology Madras, Chennai, India
Search for other works by this author on:
R. Saravanan
National Institute of Ocean Technology, Chennai, India
S. K. Bhattacharyya
Indian Institute of Technology Madras, Chennai, India
R. Panneer Selvam
Indian Institute of Technology Madras, Chennai, India
Srinivasan Chandrasekaran
Indian Institute of Technology Madras, Chennai, India
Paper No:
OMAE2011-49840, pp. 663-669; 7 pages
Published Online:
October 31, 2011
Citation
Saravanan, R, Bhattacharyya, SK, Panneer Selvam, R, & Chandrasekaran, S. "Hydrodynamic Analysis of Semisubmersibles for a Large Scale Desalination Plant." Proceedings of the ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Ocean Engineering. Rotterdam, The Netherlands. June 19–24, 2011. pp. 663-669. ASME. https://doi.org/10.1115/OMAE2011-49840
Download citation file:
22
Views
Related Proceedings Papers
Related Articles
Design and Dynamic Analysis of a Co-Existence Solution Between a Semi-Submersible Offshore Fish Cage and a Spar-Type Floating Offshore Wind Turbine
J. Offshore Mech. Arct. Eng (June,2024)
Model Tests for a Floating Wind Turbine on Three Different Floaters
J. Offshore Mech. Arct. Eng (May,2014)
A Review of Floating Platform Concepts for Offshore Wind Energy Generation
J. Offshore Mech. Arct. Eng (May,2014)
Related Chapters
Common Compliant Platforms
Offshore Compliant Platforms: Analysis, Design, and Experimental Studies
Adding Surface While Minimizing Downtime
Heat Exchanger Engineering Techniques
Introduction
ASME International Steam Tables for Industrial Use, Third Edition