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Experimental study on hydrodynamic behavior of jacket spar platform
U. S. Sajini, , V. Anantha Subramanian
Published in
2009
Volume: 4
   
Issue: PART A
Pages: 145 - 149
Abstract
This paper presents the experimental study on the hydrodynamic behavior of a jacket spar platform designed for 10 MLD (million liters per day) desalination plant in the water depth of 375 m with the pay load of 50×103 kN. The surge, heave and pitch natural periods from free decay tests are presented and validated with the numerical results obtained using NAOS (Non-linear Analysis of Offshore Structures) developed in IIT Madras. The jacket spar is modeled using sixty beam elements and each mooring lines by ten beam elements with axial prestress to model the pretension. The beam elements with axial prestress do not take any compressive load. The surge, heave and pitch response and mooring line tension of the jacket spar platform for three wave height range of 2.6m to 8.75m in the wave period range of 7.82s to19.00s are presented. The maximum surge of 0.5% of water depth, the maximum heave RAO of 0.1 and maximum pitch of 1.54° are within the operational limits. The maximum tension in mooring line is only 10% of breaking strength. Copyright © 2009 by ASME.
About the journal
JournalProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Open AccessNo
Concepts (28)
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    Beam elements
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    BREAKING STRENGTH
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    COMPRESSIVE LOADS
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    DESALINATION PLANT
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    Experimental studies
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    FREE DECAY
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    Hydrodynamic behavior
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    MAXIMUM PITCH
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    MOORING LINE
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    NATURAL PERIOD
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    Numerical results
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    OPERATIONAL LIMITS
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    Pay load
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    PITCH RESPONSE
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    Pre-stress
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    SPAR PLATFORMS
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    Water depth
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    Wave heights
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    Wave period
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    ARCTIC ENGINEERING
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    Desalination
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    FLUID DYNAMICS
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    Hydrodynamics
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    Numerical analysis
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    Oceanography
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    OFFSHORE STRUCTURES
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    WATER FILTRATION
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    Mooring