The offshore exploration of gas requires the use new platforms design called FLNG (Floating Liquefied Natural Gas). Nowadays just a few number are in advanced stages or under construction. This type vessel large tanks to storage liquefied and some cases movement liquid inside can modify behavior waves. work objective is obtain influence cargo floating vessels motions. An experimental setup was proposed investigate this influence. A model tested for two configurations: with fixed dry cargo....

The increasing demand for natural gas is encouraging the development of novel floating units’ designs, capable processing large quantities hydrocarbon. These units called FLNG (Floating Liquefied Natural Gas) are facilities that produce, process and store liquefied (LNG) offshore. Once topside tanks a larger more complex than regular FPSO vessels, design considering these particularities must be used. just few under construction not yet in operation, information on first stages poor. It...

Floating offshore wind turbines (FOWT) have many pros and cons. Among the pros, we can mention availability of more constant winds a velocity suitable to use in their optimum efficiency. cons, there are high costs for installation, mooring lines large length cables required energy transmission. In this context, saving structural weights floater is, certainly, very welcome. This paper describes results an experimental campaign 1/80th scale model FOWT performed wave basin. The consists central...

The small-scale mobile Floating Liquefied Natural Gas process is an alternative to reduce the logistics costs of natural gas in offshore fields and consequently better manage associated streams. In background significant oil discovery Brazilian Santos Basin Pre-salt Cluster, it important take advantage all financial viability be explored basin, such as taking production gas. Therefore, these possibilities, use a combined with miscible CO2 Water-Alternating-Gas-enhanced recovery proposed...

Abstract The work focuses on an open and collaborative approach for hydrodynamic simulations of multibody operations. It builds Vessel.js, existing web-based ship design library, by modeling the interaction between entities creating models able to output different responses. To develop cases here studied, are decomposed into single elements understand their behavior separately before making them interact with other create a simulation. In process, used analyze bodies according requirements...

In ocean systems composed by two or more closing floating bodies, coupled hydrodynamics effects must be considered. Dynamic positioned (DP), for example, need an accurate determination of environmental forces to guarantee a safe operation. This work presents numerical methodology, using the WAMIT code, evaluate both first order motions and mean drift system DP Crane Barge operating close turret-moored FPSO. The wave were evaluated code standard method. second (or forces) obtained alternative...

DP crane vessel operation can be analyzed based on the uncoupled system or considering fully coupled system. Parameters such as top-crane acceleration, thruster capability and motions are evaluated for several environmental conditions. Numerical experimental tools used important result of this analysis is maximum condition in that safely executed. Those operations critical, since kept close proximity with other unit large loads transported a pendulum configuration. A precise positioning...

This article deals with the development of a numerical tool based on an integrated synthesis model to carry out first project cycle floating liquefied natural gas (FLNG) platforms produce, process, store, and export (LNG). The topside configuration, tank geometry capacity, production levels, equipment list, environmental operating conditions, classification society requirements, structure, stability, seakeeping are considered in single model, generating sufficiently large number solutions....

Abstract An experimental setup was built to investigate the vortex-induced vibration (VIV) phenomenon on yawed and inclined flexible cylinders, in which five yaw angles θ = 0 deg, 10 20 30 45 deg azimuth β 90 135 180 were combined. The experiments carried out a towing tank facility at Reynolds numbers from 1800 18,000, comprising vibrations up eighth natural mode. Time histories of displacements recorded using submerged optical system that tracks 17 reflective targets. A modal decomposition...

Abstract With the demand to reduce release of CO‐rich gases into atmosphere, offshore industry is turning systems for gas capture and storage. The construction a cave that purpose planned in salt layer Santos Basin, Brazil; however, numerous factors bring uncertainties project. We propose combining engineering methods digital twin technology enable system concept execution aiming at value robustness. modeled mission, subsystems, components, design attributes. System utilities costs are...

The coupled hydrodynamic of a DP Barge operating close to FPSO is evaluated. Experimental tests in wave basin were performed obtain the system dynamic behavior for several relative positions and environmental incidences. Two small scale models with factor 1:48 tested three different positions, five incidence angles two irregular seas. industry experience barges was used provide insight select these configurations. model equipped positioning (DP) system, order keep its position FPSO. uses...

A parametric analysis which investigates the effects of hull main dimensions on seakeeping comfort was proposed to improve a standard SWATH vessel. This study numerically carried out involving some parameters and worldwide sea conditions. Some types their non-dimensional ratios were considered. The vessel are: length (L), beam (B), pontoons radius (R), draft (T) strut thickness (t). secondary assumed so that model wet surface could be designed using MULTISURF, later used WAMIT evaluate...

The MPSO is characterized by the use of hydrodynamics appendages, such as moonpool, beach and skirts, which improve hydrodynamic behavior unit in waves. This type platform may be designed for different offshore scenarios as, example: possibility oil gas storage, dry tree completion system steel catenary risers (SCR). An optimization procedure to choose geometric dimensions becomes important order achieve optimum operate harsh environmental conditions each scenario. might useful preliminary...