... by coupling a genitic algorithms (GA). A series of numerical experiments are conducted to analyze the accuracy and effectiveness of the neural network surrogate model. Additionally, CFD simulations are performed on both the optimized hull form scheme and the parent ship scheme. The calculation results show...

... ABSTRACT Among different methods for ship maneuvering motion prediction, efficiency and accuracy are equally important. Considering the ability to identify nonlinear behavior of neural networks, a 4DOF data-driven model is established from the standard mathematical model. Two practical...

... at model scale to evaluate the energy-saving effect. After the validation of numerical method, the parameterization of energy-saving device is performed based on the effective wake field. Then, through systematic investigations of design parameters, well-performed candidates are designed, the total energy...

... sustainability seamount deep-sea seamount seafloor geology modeling observation geologist strength social responsibility sediment plume tide technology amplitude cobalt-rich crust mining geophysical research social impact assessment environmental impact assessment crust mining...

... ABSTRACT This paper presents the results of numerical dynamic seismic analysis of a model of an artificial island on liquefiable foundation soils in Nordvik Bay, Laptev Sea. Modeling was performed to compare the stress-strain state of the "soil-structure" system obtained using two material...

... hummock thickness configuration correspond experiment keel fragment rubble polygon hopkin approximation porosity aquarium bedstead simulator modeling floe cavity Proceedings of the Thirty-fourth (2024) International Ocean and Polar Engineering Conference Rhodes, Greece, June...

... mechanics (CSM) model to study the hydroelastic behavior of a vertical wall in periodic waves. It is concluded that the flexible wall's wave reflection, run-up, and loading is less than the rigid one's. The decreases also occur when the waves become shorter. geology interaction cfd-fea method...

... with their infrequent event records making prognostic modelling challenging. We present an efficient model to perform such hazard analyses, based on solving the linear mild-slope equation with a time-dependent source term representing the seafloor motion. The proposed approach allows carrying out many computations...

... structures, a more practical alternative is to perform fatigue analysis based on finite element (FE) simulations. This necessitates the availability of an FE model representing the offshore structure accurately combined with fracture mechanics theory. In this regard, the development of a meticulous model via...

... ABSTRACT An IEA 15MW semi-submersible FOWT in focused waves is investigated by using a consistent second-order hydrodynamic model in the time domain, uniquely formulated in the body-fixed coordinate system (BFCS). The quadratic drag loads on the cross sections along the horizontal pontoons...

... ABSTRACT The accuracy and generalization of the model for predicting ship maneuvering motion are significant to the navigation efficiency and safety. A nonparametric modeling method based on BP (Back Propagation) neural network combined with AdaBoost (Adaptive Boosting) algorithm is proposed...

... installation germany government embedment depth soil spring soil model displacement curve simulation modeling soil resistance load displacement curve ABSTRACT Suction buckets are a foundation type for offshore structures. They are installed by evacuating the water inside the bucket, which...

... average temperature shale strength heat flow depositional environment mudstone hydrate temperature variation decomposition equation elsevier hillel modeling annual temperature variation soil temperature soil layer interaction celsuis ABSTRACT Changes in the physical state...

... ABSTRACT A novel method for black-box modeling of ship maneuvering motion is proposed. The identification method is based on Gaussian progress regression (GPR), and the particle swarm optimization (PSO) is used for optimization of the hyperparameters in the kernel function to improve...

... brazil government coefficient sustainability freight & logistics services marine transportation europe government hull simulator experimental data ship froude number mesh convergence calculation procedure social responsibility sustainable development grid mathematical model...

... ABSTRACT For the problem of recycling AUV with manipulator, this paper starts from the aspects of kinematics modeling of manipulator, visual perception of target position, trajectory tracking control. Based on ROS to construct a simulation environment, and release visual information through...

... of the three icebergs, aerial photography of the above water and sonar survey of the underwater parts were carried out, which made it possible to build their 3D models and perform numerical simulation of their hydrodynamic parameters. Drag coefficients (for steady movement) and added mass (for accelerated...

... ABSTRACT Numerical models may represent a useful tool to estimate wave overtopping discharge. However, so far there is still little available literature on numerical modeling, especially on Boussinesq modeling. The paper analyses the ability of a BTM, Celeris, to predict wave overtopping...

... neural network midstream oil & gas pipeline marine transportation artificial intelligence concentration formula traverse rope speed cutter suction dredger soil particle information gain rate construction data upstream oil & gas data mining characteristic mechanism model...

... & offloading artificial intelligence constraint horizontal displacement modeling line tension weather condition floating production system mooring system subsea system platform safety factor initial tension optimization procedure bolshev survival mode probability Proceedings of the Thirty...