Modeling and Simulation of Moored-Floating Structures Using the Tension Element Method

Martín, Tobías; Kamath, Arun; Bihs, Hans

doi:10.1115/1.4044289

Cited by 10 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The approximation model technology provides a solution that balances the computation time and accuracy [28]. The approximation method for floating structure in terms of hydroelastic behavior [1,20,29] and load analysis in mooring [6, 25,28] have been done by another researcher. However, the approximation method in connectors for floating structures has not been explored yet.…”

Section: Axial Load Connector Analysismentioning

confidence: 99%

Approximation method of the axial forces on network of connectors for modular hexagonal floating structures

Hanani,

Shaharuddin,

Ali

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Modular floating structures are normally made up of modules which are connected using network of connectors. These connectors are prone to heavy load due to facing the open sea wave. Previous studies have examined simple module configuration such as two rectangular form arranged linearly or three or seven hexagonal form arranged in an oblique pattern experimentally or using CFD and FE packages. Two challenges persist afterward; firstly, on applying the current findings to topology made up of a bigger number of modules and secondly on estimating the axial load values of connector at the preliminary design stage. This study developed an approximation method of axial force at the connector based on basic module configuration of hexagonal modular floating structure and axial load values determined by earlier studies. Four approximation methods vary with number of modules, arrangement and connectors facing 900 wave direction were proposed. Early analysis of the proposed method revealed that the axial force of the hexagonal modular connector is affected by the overall structure type and configuration such that hexagonal module-to-module connection requires higher axial load as compared to hexagonal modular cluster-to-cluster linkage due to load distribution amongst the connectors.

show abstract

Section: Axial Load Connector Analysismentioning

confidence: 99%

Approximation method of the axial forces on network of connectors for modular hexagonal floating structures

Hanani,

Shaharuddin,

Ali

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The parameter γ arises in (22) from the transition of a surface force to a volume force and represents the diameter of the influence sphere of each knot. It is adjusted so that it accurately predicts the deceleration of the flow through the net.…”

Section: Two-way Coupling Of Fluid and Net Dynamicsmentioning

confidence: 99%

“…The net model is implemented in the open-source Computational Fluid Dynamics (CFD) code REEF3D [5]. The code has been used and validated for a wide range of marine applications, such as breaking kinematics [13], breaking wave forces [14], sloshing [10] and fluidstructure interaction of floating objects [4,22]. The new contribution of this paper consists of the development of a dynamic implicit net model and its coupling to a CFD fluid solver for calculating the interaction with the fluid.…”

Section: Introductionmentioning

confidence: 99%

Numerical Modeling of the Interaction of Moving Fish Nets and Fluid

Martín

Wang

Bihs

2021

Journal of Offshore Mechanics and Arctic Engineering

Self Cite

View full text Add to dashboard Cite

The significant difference in length scales between the flow around a moving fish net and the flow around each twine of the net prevents the resolution of the complete structure within a discrete fluid domain. In this paper, this issue is overcome by calculating the net and fluid dynamics separately and incorporate their interaction implicitly. The forces on the net are approximated using a screen force model, and the motion of the net is computed with a lumped mass method. Here, a linear system of equations is derived from the dynamic equilibria and kinematic relations. The net model is coupled to the CFD solver REEF3D which solves the incompressible Navier-Stokes equations using high-order finite differences in space and time. Several numerical calculations are provided, and the comparison of loads and velocity reduction with available measurements indicates the good performance of the proposed model.

show abstract

“…The net model is implemented in the open-source Computational Fluid Dynamics (CFD) code REEF3D [16]. The code has been used and validated for a wide range of marine applications, such as breaking kinematics [17], breaking wave forces [18], sloshing [19] and fluid-structure interaction of floating objects [20,21]. The new contribution of this paper consists of the development of a dynamic implicit net model and its coupling to a CFD fluid solver for calculating the interaction with the fluid.…”

Section: Introductionmentioning

confidence: 99%