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1-20 of 35
Keywords: cfd
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Proceedings Papers
Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-510
... ABSTRACT The power predicted by the model test is closely linked to hull form factors, derived from either the Prohaska method, Computational Fluid Dynamics (CFD), or alternative methodologies. However, each method of determining the form factor ( k ) has its challenges. Thus, regression...
Proceedings Papers
Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-327
... ABSTRACT This topic presents the results on estimating wind drag coefficient acting on a large surface area ship using Computational Fluid Dynamic (CFD). Firstly, aerodynamic performances and wind drag acting on an original hull has investigated. Analyzing the obtained CFD results, interaction...
Proceedings Papers
Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-336
... ABSTRACT This study delves into Computational Fluid Dynamics (CFD) applied to roll free-decay tests for freely-floating, barge-type, Floating Production, Storage, and Offloading units (FPSOs). The main objective of this work is to investigate complexities of the corresponding CFD simulations...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-567
... ABSTRACT The results of computational fluid dynamics (CFD) are significantly affected by the mesh and the numerical methodology chosen by the users. In this study, to overcome the mesh dependency by users, a macro that automates mesh generation and simulation settings is developed using...
Proceedings Papers
Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-339
... ABSTRACT In this paper, we propose an assessment method considering fuel oil consumption (FOC) based on weighting factors, which could evaluate the overall performance of polar ship. The brake horsepower in ice-free water is calculated by CFD, and minimum power in level ice is predicted...
Proceedings Papers
Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-501
... ABSTRACT The aerodynamic forces of containers on the deck considering crosswind and different container distributions were predicted using Realizable κ-ε model. The CFD (Computational Fluid Dynamics) results show good agreement with the experimental result. The results conclude...
Proceedings Papers
Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-4163
... make experiment was conducted in the towing tank of Osaka University with the propeller wake field uniform and has the benefit of the cavitation fully loaded condition at model speed of 0.795 m/s. In numerical performance of propeller. The rudder fin is the thrust fin fitted on both prediction, CFD...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-519
... ABSTRACT The hydrodynamic performance of the wave energy converter (WEC)-rotor is studied based on nonlinear computational fluid dynamics (CFD) using the Reynolds-Averaged Navier-Stokes equation in STAR-CCM+. The concept of WEC-rotor mechanism is similar to the Salter's duck. Wave-WEC...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-670
... ABSTRACT The performance of full scale ship is commonly estimated from results of model scale analysis as ITTC correction methods. Recently, full scale CFD is also being used for ship performance estimation due to less scale effect. However, full scale CFD is difficult to validate the results...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-305
... to a propeller and the effect to self-propulsion factors is observed in the model test. However it is typically difficult to predict the effect by Computational Fluid Dynamics (CFD) because a fin is considerably smaller than the hull and there is a distance between a fin and a propeller. To clarify the mechanism...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-341
.... In this study, flow and scour around a monopile foundation exposed to a current were investigated by using the computational fluid dynamics (CFD) and discrete element method (DEM) coupling method. The open source computation fluid dynamics library, OpenFOAM, and a sediment transport library were coupled...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-360
... that NMRI formula gives conservative results. In the present study, the added resistance in waves of the Aframax tanker is evaluated by NMRI formula, free sailing model tests, numerical analyses using Rankine panel methods and Computational Fluid Dynamics (CFD). The Rankine panel methods were conducted...
Proceedings Papers
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-308
... Dynamics (CFD), on the other hand, provides answers to the pitfalls of model testing as it helps in understanding the mechanism by studying the flow field visualizations at any given point and time of a maneuvering ship. However, the application of CFD methods is still limited and the accuracy obtained...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-336
... ABSTRACT This paper presents the performance assessment of pitch-type wave energy converter (WEC) rotor due to nonlinear viscous damping obtained from the free decay tests conducted in computation fluid dynamics (CFD). The nonlinear damping moment is obtained by energy method (Bass and Haddara...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-337
... ABSTRACT This paper presents the results of the wind loads on typical offshore vessels at model scale 1:250 obtained with CFD simulations. A FPSO, shuttle tanker and two membrane/moss type LNG carriers have been investigated, as well as the side-by-side configuration of FPSO and shuttle tanker...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-620
... ABSTRACT This paper presents results of two-phase flow numerical simulations of the dynamic behaviour of a Tension Leg Platfrom (TLP). The Computational Fluid Dynamics (CFD) simulations were based on the volume of fluid (VOF) method implemented in the CFD code STAR-CCM+. The TLP's rigid body...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-682
... scale CFD can be applied to determine the air resistance of a ship for geometrical and physical similarity. In this paper, full scale CFD results of two general cargo ships for air resistance are compared with Fujiwara formula and the data set of ISO15016:2015. In case of CFD computation, atmospheric...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-739
... ABSTRACT In order to design a wave energy generating system of a floating type, a 6- Degrees Of Freedom (DOF) motion technique was applied to Computational Fluid Dynamics (CFD) analysis on this floating body and the behavior is interpreted according to the nature of the incoming waves...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-432
... in the boundary layer in the upstream flow field of propeller. The fin's dimension is very small compared with ship and distance between fin and propeller, so it is usually difficult to predict the effect of fin to selfpropulsion characteristics by CFD (Computational Fluid Dynamics), although the effect...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-078
... ABSTRACT This paper presents the results of a part of a university research project to determine the hydrodynamic force coefficients of K-lattice jack-up leg using CFD. The so-called K-lattice leg is built up from cylindrical members and three main vertical chords, developed to be used...
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