Numerical evaluation of a subsea equipment installation method designed to avoid resonant responses

Neto, Elói Daniel de Araújo; Jacovazzo, Bruno Martins; Corrêa, Fabrício Nogueira; Jacob, Breno Pinheiro

doi:10.1016/j.apor.2019.03.025

Cited by 13 publications

(3 citation statements)

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“…The data obtained from the two cases in the same state were in good agreement with each other. As shown in Figure 5a,b, the drag force ( X,EXP F ) and the offset angle ( X,EXP α ) in the Equations (1) and (2) can be approximated and simplified to (3) and (4). The length of wire is small and its hydrodynamic force has little effect when compared with the drag force and weight of the module.…”

Section: Resultsmentioning

confidence: 99%

“…The first term is total resistance (frictional resistance F f and pressure resistance F pv ). The second term is the horizontal component of the drag force acting on the wire and p 0 (z) is the pressure at level z. Equations (1) and (2) can be approximated and simplified to (3) and (4). The length of wire is small and its hydrodynamic force has little effect when compared with the drag force and weight of the module.…”

Section: Physical Modeling Of the Modulementioning

confidence: 99%

“…The oil and gas industry are engaging in offshore operations in deeper and more distant areas. As a result, subsea modules are becoming larger and more complex [1][2][3]. A key issue is how to transport subsea modules with the lowest risk and cost.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Model Investigations of the Underwater Towing of a Subsea Module

Zan

Guo

Yuan

et al. 2019

JMSE

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In underwater towing operations, the drag force and vertical offset angle of towropes are important considerations when choosing and setting up towing equipment. The aim of this paper is to study the variation in drag force, vertical offset angle, resistance, and attitude for towing operations with a view to optimizing these operations. An underwater experiment was conducted using a 1:8 scale physical model of a subsea module. A comprehensive series of viscous Computational Fluid Dynamics (CFD) simulations were carried out based on Reynolds-averaged Navier–Stokes equations for uniform velocity towing. The results of the simulation were compared with experimental data and showed good agreement. Numerical results of the vorticity field and streamlines at the towing speeds were presented to analyze the distribution of vortexes and flow patterns. The resistance components were analyzed based on the numerical result. It was found that the lateral direction was a better direction for towing operations because of the smaller drag force, resistance, and offset angle. Similar patterns and locations of streamlines and vortexes were present in both the longitudinal and lateral directions, the total resistance coefficient decreases at a Reynolds number greater than that of a cylinder.

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Section: Resultsmentioning

confidence: 99%

Section: Physical Modeling Of the Modulementioning

confidence: 99%