Browsing by Subject "Marine engineering"
Now showing items 1-20 of 547
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3D structural design tool for monohull and multihull vessels
(CIMNE, 2019)
Conference report
Open AccessAn Ultimate Limit State (ULS) based design tool has been developed, which calculates discrete 2D ship sections for computational efficiency, while supporting a 3D geometry model. This tool, called Brokkr, uses a medium ... -
A 3D rans-vof wave tank for oscillating water column device studies
(CIMNE, 2017)
Conference report
Open AccessThis paper presents the validation of a wave maker with active absorption method implemented in FLUENT® RANS-VOF code for modelling long time series of waves propagating and interacting with coastal structures, ... -
A calculation/simulation system of sails communicated in real time with wireless sensors
(Centro Internacional de Métodos Numéricos en Ingeniería (CIMNE), 2009)
Conference report
Open AccessThe model presented in this paper is part of the development and integration of a System to Support Decision (SAD) for assistance in the design and actuation of sails. The model is based on the union of a wireless sensor ... -
A comparison of numerical modelling techniques for tidal stream turbine analysis
(CIMNE, 2015)
Conference report
Open AccessTo fully understand the performance of tidal stream turbines for the creation of ocean ren wable energy, a range of computational models is required. We review and compare results from several ... -
A complete data-driven framework for the efficient solution of parametric shape design and optimisation in naval engineering problems
(CIMNE, 2019)
Conference report
Open AccessIn the reduced order modeling (ROM) framework, the solution of a parametric partial differential equation is approximated by combining the high-fidelity solutions of the problem at hand for several properly chosen ... -
A computational framework for informing decision in relation to environmental impact of wastewater discharges
(CIMNE, 2015)
Conference report
Open AccessMulti-objective optimization combined with numerical simulation are useful tools for environmental sciences. Using these methods, the treatment and discharge of wastewater in large waterbodies (estuaries, ... -
A data-driven probabilistic learning approach for the prediction of controllable pitch propellers performance
(CIMNE, 2019)
Conference report
Open AccessThe multi-fidelity machine learning framework proposed in this paper leverages a probabilistic approach based on Gaussian Process modeling for the formulation of stochas- tic response surfaces ... -
A design application of cored polystyrene composite material to naval construction
(CIMNE, 2015)
Conference report
Open AccessThis paper presents a study of the distribution of stresses and strains acting on a prismatic ferry that makes use of an idealized composite [1] to naval employment. The structural arrangement of the ferry ... -
A first assessment of the interdependency of mesh motion and free surface models in openfoam regarding wave-structure interaction
(CIMNE, 2019)
Conference report
Open AccessMesh motion is of key importance in assuring adequate CFD modelling of wave- structure interaction problems, such as wave impact on floating offshore wind turbines and seakeeping of ships. Wave forcing ... -
A generalised fully unsteady hybrid RANS/BEM model for marine propeller flow simulations
(CIMNE, 2015)
Conference report
Open AccessA generalised hybrid RANSE/BEM model for the analysis of hull/propeller interaction in ship hydrodynamics problems at reduced computational cost is presented. Akin to standard hybrid RANSE/BEM models, the coupling between ... -
A generalised unsteady hybrid DES/BEM methodology applied to propeller-rudder flow simulation
(CIMNE, 2017)
Conference report
Open AccessA generalised hybrid viscous/inviscid flow model for the hydrodynamic analysis of marine propellers is presented. A Boundary Element Method (BEM) to predict propeller perturbation under inviscid-flow ... -
A global approximation to the green function for diffraction-radiation of regular water waves in deep water
(CIMNE, 2017)
Conference report
Open AccessThe Green function of the theory of diffraction radiation of time-harmonic (regular) waves by an offshore structure, or a ship at low speed, in deep water is considered. The Green function G and its gradient ∇G are ... -
A high-order and mesh-free computational model for non-linear water waves
(CIMNE, 2019)
Conference report
Open AccessIn this paper, we present the ongoing developments of a novel computational model for non-linear water waves that aims to provide a suitable framework for wave-structure inter- action. The proposed model is based on ... -
A hybrid particle-grid scheme for computing hydroelastic behaviors caused by slamming
(CIMNE, 2013)
Conference report
Open AccessCapable and accurate predictions of some effects of strongly nonlinear interaction wave-ship associated with hydroelastic behaviors are very required for simulation tool in naval architect and ocean ... -
A linearized free-surface rans method for ship maneuvering
(CIMNE, 2019)
Conference report
Open AccessProper prediction of ship maneuvering – together with powering and seakeeping – is considered essential these days to help naval architects design optimal ship hulls. In this context, traditional finite-volume Computational ... -
A mesh adaptive compressible euler model for the simulation of cavitating flow
(CIMNE, 2011)
Conference report
Open AccessWe present computations of cavitating flow over a NACA0015 hydrofoil. The simulations are performed by a finite volume compressible Euler model with dynamic mesh adaptation. The adaptive mesh refinement (AMR) is driven ... -
A method for the coupling of compressible 3d flow simulations with a cavitation erosion model for ductile materials and assessment of the incubation time
(CIMNE, 2019)
Conference report
Open AccessA compressible 3D in-house flow solver with temporal nanosecond resolution is coupled to a simple material erosion model for ductile materials. Due to limited spatial resolution, not all details ... -
A multi-objective optimization environment for ship-hull design based on a BEM-isogeometric solver
(CIMNE, 2013)
Conference report
Open AccessWe present a ship-hull optimization environment integrating modern opti- mization techniques, a parametric ship-hull model and a novel BEM solver for the cal- culation of ship wave resistance. ... -
A new adjustment-free damping method for free-surface waves in numerical simulations
(CIMNE, 2017)
Conference report
Open AccessSimulating free-surface flow around ships in sea waves using RANSE-Methods usually requires damping of the waves in front of the outlet to avoid reflections. It has been shown, that common damping methods ... -
A new composite material for fiberglass boat construction
(CIMNE, 2013)
Conference report
Open AccessThe present paper investigates the properties of an alternative material to be used in marine engineering field. It is a composite material based on a sandwich configuration, which is both rigid and light, made of expanded ...