Hydro-structure coupling of CFD and FEM - Quasi-static approach

Bakica, Andro; Malenica, Šime; Vladimir, Nikola

doi:10.1016/j.oceaneng.2020.108118

Cited by 20 publications

(3 citation statements)

References 24 publications

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“…Although tremendous advances have been made in the CFD simulations of rigid ship hydrodynamics, investigations of ship wave loads and hydroelasticity by using CFD are relatively scarce. Fortunately, the FEA of the structural part can be coupled with the CFD solver for the estimation of wave loads and structural deformations of flexible ships and offshore structures (Bakica et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Slamming and green water loads on a ship sailing in regular waves predicted by a coupled CFD–FEA approach

et al. 2021

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Section: Introductionmentioning

confidence: 99%

Slamming and green water loads on a ship sailing in regular waves predicted by a coupled CFD–FEA approach

et al. 2021

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“…This is not straightforward to perform due to their partially differing geometries. The consistent method for the interpolation of the pressure is presented in [31] for the CFD-FEM fluid structure coupling; interested readers can refer to the publication for details. Stresses computations using the CFD and the FEM in the case of the PSS can be found in [32].…”

Section: Design Procedures For Energy Saving Devicesmentioning

confidence: 99%

Hydro-structural issues in the design of energy saving devices for ships

Bakica,

Vladimir,

Senjanović

2023

Rad Hrvatske akademije znanosti i umjetnosti

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The shipping sector is currently under growing pressure concerning the GHGs emission restriction prescribed by the International Maritime Organization (IMO). Improving the efficiency of the fleet has always been an attractive subject to the shipowners, but with the new regulations, the reduction in fossil fuel consumption has switched from optional economic benefit to a rule. One of the ways for the ship to comply with the new regulations is by installing or retrofitting Energy Saving Devices (ESDs). The ESDs exploit the axial and rotational energy losses inevitably produced by the propeller operation. The ESDs differ in shape, position and kind of energy to be recovered. This article gives an overview of the current trends and practices in the field of the ESDs, along with their classification and type of operation. Furthermore, besides the hydrodynamic design, which still holds the primary importance, structural issues are also addressed, since this subject is rarely investigated in the literature. Given the complex flow field of the ESDs influenced by propeller, ship motions, wake field and waves, applicability of numerical models is described in detail, whereby the state-of-the-art approaches are clearly highlighted. Overall, the ESDs are expected to further mature in the future given the rigid rules, the promising potential of efficiency improvements they offer and the lowcost of installation.

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“…Yang et al [11] achieved numerical simulation and evaluation under simultaneous vertical, horizontal, and torsional vibrations by employing a threedimensional equivalent modeling approach. Bakica et al [12] proposed a novel numerical scheme that couples OpenFOAM and NASTRAN to enhance the transfer accuracy of hydrodynamic loads from hydrodynamic CFD meshes to structural finite element meshes.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic and Structural Optimization of a Truss-Floating Aquaculture Vessel

Zhang,

Jiang

et al. 2023

JMSE

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A truss-floating aquaculture vessel is an innovative addition to the aquaculture industry, characterized by its large, porous, ship-shaped structure. It differs from traditional ships, offshore structures, and individual net cages. Due to its distinctive features, a large-scale truss-floating aquaculture vessel requires dedicated hydrodynamic and structural analysis, which is the primary focus of this paper. Our study starts with the calculation of wave loads acting on the vessel using the equivalent design wave method. Subsequently, it delves into the analysis of structural characteristics and stress distribution of the truss-floating aquaculture vessel, upon which structural optimization is performed. To determine the optimal design variables, a sensitivity analysis of the truss members is carried out using a parametric research method. Finally, the structure with multiple objectives is optimized using two distinct approaches: the adaptive simulated annealing algorithm (ASA) and the multi-island genetic algorithm (MIGA). The results reveal that prior to optimization, there is a risk of buckling and yielding damage occurring at various connections within the vessel structure. After optimization, the structural strength is significantly improved, accompanied by a reduction in the total weight of the vessel. This study offers a valuable reference for the design and structural safety assessment of this innovative truss-floating tank-type aquaculture vessel.

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Hydro-structure coupling of CFD and FEM - Quasi-static approach

Cited by 20 publications

References 24 publications

Slamming and green water loads on a ship sailing in regular waves predicted by a coupled CFD–FEA approach

Slamming and green water loads on a ship sailing in regular waves predicted by a coupled CFD–FEA approach

Hydro-structural issues in the design of energy saving devices for ships

Hydrodynamic and Structural Optimization of a Truss-Floating Aquaculture Vessel

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