Documents published in Scipedia

• Performance and near-wake characteristics of a vertical-axis hydrokinetic turbine under a turbulent inflow and free-surface

  A. Bayram, M. Dhalwala, P. Oshkai, A. Korobenko*

  marine2023.

  
  

  • 1
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• Interaction between a submarine and a far-field underwater explosion with a transient iterative FEM-BEM coupling

  A. Nassor, M. Bonnet, S. Chaillat, G. Barras, O. Grosset, B. Leblé

  marine2023.

  
  

  • 1
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• An investigation on the hydrodynamic resistance of calcareous marine biofouling using high-fidelity simulations

  I. Kaminaris, E. Balaras

  marine2023.

  
  

  • 12
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• CFD Analysis of the Effect of Frigate Exhaustions on Helicopter Performances during onboard operations

  R. Bardera, J. Matias Garcia*, E. Barroso

  marine2023.

  
  

  • 82
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• An Improved Direct Forcing Immersed Boundary Method for Simulating Floating Objects

  A. Soydan, W. Wang, H. Bihs

  marine2023.

  
  

  Abstract

  An enhanced direct forcing immersed boundary method implemented in the open-source hydrodynamic framework REEF3D::CFD is used to simulate six-degrees-of-freedom (6DOF) motion response of a 1:30 scale point-absorber wave energy converter(WEC) under extreme wave conditions. The enhancement of the method is achieved with a new density interpolation method that removes unphysical spurious phenomena. The governing equations are solved on a staggered rectilinear grid. REEF3D::CFD uses the level set function to represent the free surface. A ray casting algorithm is employed to get inside-outside information in the vicinity of the body with the underlying Cartesian grid. The enhanced method is tested and validated based on the experimental data from the experimental wave tank campaign carried out in the Ocean and Coastal Engineering Laboratory, at Aalborg University, in Denmark. 

  Abstract
  An enhanced direct forcing immersed boundary method implemented in the open-source hydrodynamic framework REEF3D::CFD is used to simulate six-degrees-of-freedom (6DOF) motion [...]

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• A Fluid Structure Interaction Method for Simulating the Behaviour of Fishing Nets

  S. Roget, A. Gosset, M. Lema, S. Karumathill, M. González

  marine2023.

  
  

  • 1
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• Application of a two-step fluid-structure approach for the analysis of large deformations and linear vibrations of propeller blades with embedded viscoelastic material

  Q. Rakotomalala, L. Rouleau, C. Leblond, M. Abbas, J. Deü

  marine2023.

  
  

  Abstract

  In this paper, a simplified numerical approach is applied to the analysis of the linear vibrations of aluminum or composite marine propeller blades with embedded viscoelastic films, around a predeformed nonlinear state. This approach allows to evaluate in a sequential way the nonlinear deformation, induced by the generation of lift (propulsion phenomenon), and the acoustic power emitted (vibroacoustic phenomenon) of a non-cavitating flexible marine propeller blade. For a given incident flow, the deformation of an aluminum blade is much smaller than that of a composite blade. The composite blade’s deformation has a significant positive impact on lift generation whereas the deformation of the aluminum blade tends to reduce traction. The dynamic characteristics of the aluminum blade at rest and under the fluid induced static load are similar, while those of the composite blade are very different in these two cases. The simplified two-step approach proposed in this study is therefore useful to accurately assess the emitted sound power by the vibrating blades.

  Abstract
  In this paper, a simplified numerical approach is applied to the analysis of the linear vibrations of aluminum or composite marine propeller blades with embedded viscoelastic [...]

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• Simulation to Support Design of Composite Metaplate Functionalized with Acoustic Black holes for Acoustic Comfort in Ship Cabins (H2020 Fibre4Yards Project)

  J. De Luca, R. Askri

  marine2023.

  
  

  • 2
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• Multiscale approach for the analysis of composite connections and stiffeners in marine shell structures

  F. Turon, F. Otero, X. Martinez

  marine2023.

  
  

  • 1
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• Open source integration for IOT in naval industry - OSI4IOT platform

  D. Di Capua, A. Pastor Sánchez, J. García-Espinosa

  marine2023.

  
  

  • 1
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