An important marine application of fluid structure interaction is the elastic deformation of a ship’s hull in waves, which becomes particular significant on resonance either due to periodic waves ...

The analysis of drivetrains operating under high dynamic loads presupposes the assembly of a detailed simulation model which is able to represent the dynamic behaviour of the drivetrain in the frequency and time domain. ...

Shipping is commonly believed to be the most energy efficient mode of transport. Nonetheless, the shipping industry is required to reduce its environmental impact. The IMO has developed a package of measures for reducing ...

In this paper the robust optimization of a monohull for the reduction of the wave impact on the shoreline is described. Single and multi-objective techniques are considered in order to compare ...

The present work is focused on the numerical prediction of the performance of axial flow hydrokinetic turbine under practical conditions. The models are designed to produce an electrical power output of 200 W at an incoming ...

Individual based modelling techniques offer an opportunity to explore the effects of animal behaviour on the environment, and the effects of changes in the environment on animal behaviour. This holds particular relevance ...

The prediction of the vibro-acoustic behavior of vessels at every stage of the design process helps to identify acoustic problems and to optimize ship designs. In order to simulate the sound, noise and vibration ...

Open ocean aquaculture is a rapidly growing industry with the potential to satisfy the global seafood demand in the environment of declining wild fish harvesting. However, technologies developed for inshore ...

We consider thermal fluid structure interaction to model industrial gas quenching in steel forging, where hot steel is cooled using cold high pressured gas. This allows to define properties of the finished ...

The paper reports on the applicability of the Lattice Boltzmann based free surface flow solver elbe to the simulation of complex, fluid-structure interaction (FSI) problems in marine engineering. ...

The paper presents a novel hybrid approach developed to improve the resolu- tion of concentrated vortices in computational fluid mechanics. The method is based on combination of a grid based and the grid free ...

In this paper we consider the stochastic incompressible Navier–Stokes equa- tions. For the stochastic discretisation we use a stochastic Galerkin formulation and a polynomial chaos expansion. This ...

Simulation of ship motion in irregular waves, modelling of sloshing inside ship tanks or flooded holds and flow of trapped water on fishing vessel deck requires special numerical methods to ...

Vibration of plates with arbitrarily oriented stiffeners is studied. The plate may be subjected to in-plane loads and the plate boundaries may be simply supported or rotationally restained. The main objective is ...

This paper presents the results for the two additional pressure distribution functions included i the modified model FUNWAVE to simulate the propagation of waves generated by ships, where the ship is represented ...

In order to efficiently address complex problems in hydrodynamics, the advances in the dev lopment of a new method are presented here. This new CFD solver aims at obtaining a good compromise in ...

Numerical modeling of the wave interaction with coastal structures is a challenging issue due to the multi-nonlinear phenomena involved, such as, wave propagation, wave transformation, interaction among ...

The aim of this study is to prove the usefulness of a bulbous bow for a fishing vessel, in terms of drag reduction, using an automated shape optimization procedure including hydrodynamic simulations. A ...

The usage of modern thrusters allows to combine the functions of the drive and the ship rudder in one assembly, which are separated in conventional ship propulsions. The horizontally oriented propeller is ...

A new numerical model for simulating the dynamics of mooring cables is presented. The model uses the hp formulation of the discontinuous Galerkin method. Verification against analytical ...

The coupling of different simulation approaches allows the simulation of complex systems. One interesting combination in this context is to simulate rigid bodies moving in a fluid. In this work, the coupled ...

A local grid refinement approach is presented for free-surface flow sim- ulations. A semi-structured approach is used based on rectangular refinement regions, inside which the grid is locally ...

Traditionally, the environmental performance of marine systems in terms of exhaust emissions has never been among the primary concerns of the maritime industry. However, this situation is going to quickly change, as ...

Due to the large availability of cheap and powerful computational resources, and due to the high leve! of reliability of modern CFD tools , fully three dimensional Navier Stokes computations have become the state of the ...

The paper presents a method for mathematical description of the propeller geometry. The method is implemented using a set of software modules and makes it possible to describe the propeller geometry for ...

Spurious energy dissipation in numerical wave simulations due to numerical diffusion is a widely-known problem that can have several causes. The numerical diffusion can be due to the discretisation method used for the ...

In the present study, the main objective is to develop a finite volume method (FVM) based numerical modelling approach incorporated with a Volume of fluid (VOF) method to investigate the ...

A hybrid type of cost-efficient supported structure combined with concrete cone and steel shaft has been developed for wind turbine farms. A new type of structure which is supported by driven piles, termed Multi-pile ...

The Peak Stress Method (PSM) is a simplified, finite element-based technique to readily estimate the Notch Stress Intensity Factors (NSIFs) at the tip of sharp-V-shaped notches. More precisely, it was shown that the maximum ...

Pipelines, risers and piping systems are subject to internal and external pressures as well as variations in temperature due to natural variations in the surrounding environment and variations in content ...

The paper is focused on the possibility of scale effect calculations using unsteady solution of the Reynolds equations (URANS method) for arbitrary hull shapes. URANS method is used for simulation of a flow around the ...

In the present paper, different approaches for the design and analysis of ducted propellers are presented and discussed, starting from the conventional lifting line / lifting surface approach and considering ...

We have used the lifting-line code OpenProp for modeling a turbine within a nozzle designed to harness marine currents. Corrections based on actuator disc theory have been implemented to consider the accelerating ...

We analyze the problem of parametric roll in random seas, where the random wave excitation is modeled by a non-white stationary stochastic process. This process is derived from a spectral description of the random ...

Unsteady RANS simulations of flows around a tanker hull form with ship motions in regular waves are carried out. The results of Fourier analysis are similar with the measured results and ...

This paper discusses the importance of mean load effects on the estimation of the fatigue damage in offshore wind turbine monopile foundations. The mud line bending moment time series are generated using a ...

Spudcans are a type of foundation for mobile jack-up rigs and are connected to each of the three or four independent legs of a rig. These rigs are widely operating in the offshore industries ...

The coastal areas are facing serious erosion problems and, consequently, an increasing investment to build and maintain shore protection structures is expected. Coastal works involve very high costs, being ...

Pipeline free spans may be caused by uneven seabed, by surrounding subsea infrastructure such as pipeline crossings or by erosion processes like seabed scouring. On the seabed, the pipeline is subject to wave and current ...

The 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 ...