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A Deep Draft Semisubmersible with a Retractable Heave Plate
Offshore Technology Conference, 2002Abstract Gulf of Mexico deep water oil fields present challenges to the offshore industry. Large fields require heavy drilling and production topsides which favor inshore deck installation, hook-up and commissioning in order to reduce time, costs and risks associated with carrying out such operations offshore. Harsh
J. Halkyard +5 more
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Influence of Heave Plate on Hydrodynamic Response of Spar
Volume 1: Offshore Technology; Polar and Arctic Sciences and Technology, 2011Spar technology has been used in offshore oil and gas exploration successfully for number of years for drilling, production and storage in deepwater. The motion response of floating structures especially the heave response in particular, is very important to the selection of suitable drilling and production equipments.
S. Sudhakar, S. Nallayarasu
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Hydrodynamic performance of solid and porous heave plates
Ocean Engineering, 2008Heave plates have been widely utilized in floating offshore structures as they can provide additional damping and added mass to improve the hydrodynamic response of the system. This study investigates the hydrodynamic characteristics (added mass and damping) of oscillatory solid or porous disks using model scale experiments.
Tao, Longbin, Dray, Daniel
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Improving the Motions of a Semi by the Addition of Heave Plates
Volume 1: Offshore Technology, 2008Similar to the manner in which heave plates provide a Truss Spar with low global motions, a heave plate system can be used to significantly mitigate the motions of a conventional semi-submersible. This paper will focus on the global performance of a conventional semi-submersible that has been properly configured with heave plates.
Cheng-Yo Chen +3 more
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Engineering Structures, 2018
Abstract The undesirable motions resulting from wave loading can lead to the long-term fatigue damage or even catastrophic sinking of offshore semi-submersible platforms (SSP). It is therefore by all means necessary to suppress the excessive vibrations of SSP. Many methods have been proposed to mitigate the heave motion of offshore platforms, such as
Hong Hao, Kaiming Bi, Ruisheng Ma
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Abstract The undesirable motions resulting from wave loading can lead to the long-term fatigue damage or even catastrophic sinking of offshore semi-submersible platforms (SSP). It is therefore by all means necessary to suppress the excessive vibrations of SSP. Many methods have been proposed to mitigate the heave motion of offshore platforms, such as
Hong Hao, Kaiming Bi, Ruisheng Ma
exaly +3 more sources
Heave Plate Design With Computational Fluid Dynamics
Journal of Offshore Mechanics and Arctic Engineering, 2000Computational fluid dynamics (CFD) methods are used to predict the hydrodynamic loads on heave plates. A series of numerical simulations for plates undergoing simple harmonic motion is used to determine the force and moment resultant histories. Then a least mean squares method is used to obtain the appropriate Morison coefficients for the plates under ...
Samuel Holmes +4 more
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Hydrodynamic performance of a continuous floating bridge with heave plates
Applied Ocean Research, 2021Abstract This paper establishes a two-dimensional mathematical model of a continuous floating bridge with heave plates under linear monochromatic waves. Based on linear potential flow theory, the fluid domain is divided into two regions. The analytical equations for the rigid floating bridge considering the heave plate effect are derived from the ...
Yikuan He, Ji Wenyu, Jia Ying, Bing Han
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Hydrodynamic Performance of Conical Shaped Heave Plates
2019 Offshore Energy and Storage Summit (OSES), 2019Heave plates are commonly employed as an effective and sustainable method to dampen unwanted oscillations of floating offshore structures caused by wave action. Such motion in the case of offshore floating wind turbines (OFWT) can reduce aerodynamic performance and increase fatigue loading. While the performance of flat heave plates is well documented,
Robert Mecrow, Seamus Garvey
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Applied Ocean Research, 2021
Abstract Heave plates are widely used in floating offshore structures to reduce the heave motion by increasing heave damping and heave added mass, and these parameters are sensitive to the amplitude and frequency of heave motion. It is important to obtain the hydrodynamic parameters, namely, damping and added mass of the floater not only at its ...
Mahesh J. Rao +2 more
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Abstract Heave plates are widely used in floating offshore structures to reduce the heave motion by increasing heave damping and heave added mass, and these parameters are sensitive to the amplitude and frequency of heave motion. It is important to obtain the hydrodynamic parameters, namely, damping and added mass of the floater not only at its ...
Mahesh J. Rao +2 more
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Assessment of Nonlinear Heave Damping Model for Spar With Heave Plate Using Free Decay Tests
Volume 2: CFD and VIV, 2016Linear damping models have been used in the past for solving floating body dynamics, especially for simple geometries such as spar. However, due to the addition of heave damping elements to spar such as heave plate, complex flow around these elements may change the relationship between damping and velocity of the body to nonlinear.
Mahesh J. Rao +2 more
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