Semi submersible
Hydrodynamics around a deep-draft-semi-submersible with biomimetic tubercle corner design
... The suppression of vortex-induced motions (VIM) of bluff bodies (offshore floating platforms, riser pipes etc.) raises a technological challenge within the offshore oil & gas discipline. The fundamental fluid physics ...
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Hydrodynamic analysis of a semi-submersible wind-tidal combined power generation device
... Based on the relevant research results (Christensen et al. 2015; Chozas 2012; Greaves et al. 2014; Tuitman et al. 2012; Lin and Yue 1991; Mohanty et al. 2016), this paper considers the interaction between the turbine ...
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Analysis of the Effect of Supplying Vessel on Wave Drift Force of Semi Submersible Platform
... the semi-submersible platform in the same flow field is more obvious in the middle and high frequency part, and the shielding effect of the replenishment ship to the semi-submersible platform ...
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Full-scale CFD investigations of helical strakes as a means of reducing the vortex induced forces on a semi-submersible
... This paper started with a detailed literature survey in the area of VIMs focusing on state-of-the-art CFD-based techniques. It is expected that our literature review summarises the recent studies of researchers ...
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Interaction of vortex shedding processes on flow over a deep-draft semi-submersible
... 21 Vortex-Induced Motions VIM; Deep-Draft Semi-Submersible DDS; Computational Fluid 22 Dynamics CFD 23 Nomenclature 24 Ax /L Non-dimensional characteristics amplitude of in-line motion 2[r] ...
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Global motion and airgap computations for semi-submersible floating production unit in waves
... hand, SEMI is a cost-efficient solution for intermediate and deep water depth with relatively larger ...Furthermore, SEMI has no restriction on fabrication location as it can be built by a number of shipyards ...
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Predictive Control and Implementation of Mooring Automatic Positioning System for Deepwater Semi Submersible Platform
... deepwater semi-submersible platform is raised as an important issue, in which, the big time delay, multi coupling, large vibration control problem are ...
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The effects of wind-induced inclination on the dynamics of semi-submersible floating wind turbines in the time domain
... of semi-submersible FWTs unequipped with active wind load compensation e has been shown to hold signi fi cant potential for the appearance of geometric nonlinearities in the diffraction/ radiation behaviour ...
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Implementation of Mooring Automatic Positioning System for Deepwater Semi Submersible Platform Based on Dual Stage Actuator
... The automatic positioning control of mooring system for deepwater semi-submersible platform has become a key issue in the research and development field of deep-sea resources. The Dual- Stage Actuator (DSA) ...
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Numerical and experimental study on hydrodynamic performance of a novel semi-submersible concept
... (MCP) semi-submersible is a newly proposed concept, which differs from the conventional semi-submersibles, featuring a centre column and middle ...conventional semi- submersibles have been ...
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Reducing tower fatigue through blade back twist and active pitch-to-stall control strategy, for a semi-submersible floating offshore wind turbine
... a semi-submersible floating platform, this study investigates its possible benefits in terms of rotor speed performance, power generation, and tower base fore–aft moment-induced fatigue ...
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Influence of Payloads on the Hydrodynamic Response of Semi Submersible Platform
... the semi submersible platform was carried out for ...the semi-submersible have greatest impact on the downtime of platform ...of Semi-submersible having four rectangular columns ...
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Investigation on motion responses of a semi-submersible platform and its mooring system
... Abstract: More and more floating structures are used in both offshore and coastal engineering, and also under assessment for wind energy. Mooring systems are needed by floating structures for station-keeping. In this ...
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Hydrodynamics around a deep-draft semi-submersible with various corner shapes
... A numerical study on flow over a stationary deep-draft semi- submersible (DDS) with various corner shapes was carried out to investigate the corner shape effects on the overall hydrodynamics. Three models ...
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Experimental and numerical study on vortex-induced motions of a deep-draft semi-submersible
... Time history of the motion in the transverse direction y/L, lift force coefficient CL for 45° 714 incidence at Ur = 6.6 lock-in, the vorticity contours in the XY plane at middle draft o[r] ...
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Critical review of floating support structures for offshore wind farm deployment
... multi-cylindrical semi-submersible, the waterplane-area stabilised barge is rather a plane ...spar, semi-submersible, and barge; tendons for TLP), the floaters differ in their ...
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Design and Optimization Techniques Used in Horizontal Openwell Submersible Pump
... A Semi-Submersible Platform”, International Journal of Design and Manufacturing Technology (IJDMT), Volume 5, Issue 3, 2014, ...of Submersible Induction Motor Using Maxwell ...
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Study on a new mooring system integrating catenary with taut mooring
... Abstract: The merits and demerits of catenary mooring system and taut mooring system, which are commonly used nowadays, are analyzed. Falling somewhere between these two systems, a new mooring system integrating catenary ...
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Numerical study on a hybrid mooring system with clump weights and buoys
... A typical semi-submersible (as shown in Fig. 4) in Gulf of Mexico is simulated to investigate the effectiveness of the proposed hybrid mooring system in different water depths. The horizontal x-y plane of ...
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Experimental study of a hybrid mooring system
... a semi-submersible platform moored by the mooring lines with or without the weights and ...the semi- submersible and non-linear mooring line tension responses for various mooring ...
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