... case. The relevance of model tests is discussed with regards to model ice type, ice formation (level ice, broken ice, ice ridges, rubble ice, etc) as well as scaling of ice properties. In a first step the main gaps and uncertainties of state of the art scale model testing and numerical simulations...

..., ballast and cargo operations as well as wet tow performance of the FPSO are discussed. The global performance of the Mero3 FPSO has been examined both numerically and through model tests. Extensive stability verification and loading analysis have been performed using the NAPA software. Comprehensive...

... Abstract The Vortex Induced Motion (VIM) response of multi-column semi-submersible floaters may have a significant impact on the predicted fatigue life of mooring and riser systems. Over the last decades physical model testing using Froude-scaled floater geometries has been the main method...

... and subsequently, of the axial load re-gain due to pipe movements, have been made in a suite of centrifuge physical model tests (in O'Beirne et al., 2022a , b ). An analytical tool has been developed to capture these effects and is presented here. More specifically, the model describes the evolution, in a cycle...

... condition united states government liquified natural gas navigation lng voyage pugnax non-arctic sea thickness arctic gas monetization northern sea route ice pressure first-year ice water area level ice resistance transit year-round operation aker arctic model test russian federation...

... stiffness in the prototype, the following interactive numerical- experimental approach has been developed: Develop VIM Model Test Model (MTM) with horizontal mooring system using an industry recognized software. The numerical model will be calibrated against the VIM towing tank model to ensure...

... characteristics of TLPs, especially the high frequency dynamic responses of tendons, and the design tensions of the Auger tendons were not calibrated to scaled wave basin model tests like the later TLP projects since the Auger TLP. Based on the accumulated experience from more than two decades’ operation...

...: Model Tests"; Proc. Offshore Technology Conference , Paper No. 6153 , Houston, Texas . DNVGL-RP-C203 ( 2016 ).; Fatigue Design of Offshore Steel Structures, Recommended Practice, DNV GL DNVGL-RP-C205 ( 2019 ).; Environmental Conditions and Environmental Loads, Recommended Practice, DNV...

...OTC-30690-MS Automatic Tuning of Vessel Models Offshore: A Feasibility Study Using High-Precision Data from Model Test Karl E. Kaasen, Kjetil Berget, and Halvor Lie, SINTEF Ocean; Rune Bjørkli, Equinor Copyright 2020, Offshore Technology Conference This paper was prepared for presentation...

... the proprietary model test data and research/ design experience accumulated over the past three decades on the riser-soil interactions with the riser engineering community in order to deepen the understanding of this complex problem and to realize economical SCR designs. The objectives are (i) to present a fully...

... design life extension. The motivations of the paper are to advance the understanding of the complex mechanism of SCR-soil interactions in a comprehensive yet efficient way, to supplement the extensive model test-based SCR-soil interaction studies in the literature, and to offer a numerical tool...

... Abstract It is challenging to predict the air gaps of floating offshore structures due to the property of ocean waves and induced motions of the structures. Linear analysis based on potential flow theory is common to be used for air gap evaluations before carrying out air gap model tests...

... Motion (VIM) behavior occurs, and VIM behavior occurs under increased current velocities. However, observed VIM amplitudes are much smaller than what is observed under typical model test conditions and there is a significant variation in oscillation period. Yet and evaluation of oscillation periods...

... complex model tests was used to guide the design. These initially included forced motion and drop tests to define the hydrodynamic properties of the buoy and the hydrodynamic near-field interaction of the buoy and a fixed FPSO turret. Later tests modeled the full system in waves while disconnecting...

... embedment offshore pipeline offshore technology conference axial resistance upstream oil & gas proc pipeline embedment guideline interaction pipe-soil interaction stability resistance density flow pipeline engineering model test randolph strength zakeri An , H. , Luo , C...

... ], and suggests a way forward. guideline model test prediction guidance upstream oil & gas probability seastate calculation asymmetry factor airgap integrity annual probability operational safety negative airgap subsea system wave impact load horizontal wave impact load peak pressure...

..., concept approval by Class, and both open water and ice model testing. upstream oil & gas offshore technology conference winch drillship model test turret thruster upper part subsea system water depth disconnection open water ice model test attachment system ice condition lower...

... of focus of the ongoing project. CFD-based predictions show a significant reduction in the VIM response when additional damping is considered. With the intent of validating the CFD models and to further understand the effect of additional damping on the VIM response, a model test campaign was conducted...

... Abstract A new method for identification of wave drift coefficients and low-frequency damping from model tests is presented. The method is motivated by the lack of robust numerical methods for the calculation of the viscous contribution to the mean and slowly varying wave drift forces – often...

... Abstract Available field measurements of semisubmersibles indicate that the Vortex Induced Motion (VIM) response is typically found to be smaller than what is predicted in model tests. Reductions of as much as 50% seem to be occurring in the field compared to the response found in model tests...