Dynamic Simulation of a Wind Assisted Ship Propulsion System and its Time Domain and Frequency Domain Analysis

During the energy transition, a wind-assisted ship propulsion system has the potential for increasing energy efficiency according to the ship’s EEDI (Energy Efficiency Design Index) in the short term. However, it would not only make the diesel engine run in off-design condition, but its dynamic behavior due to time-varying wind and waves is...

Analysis of fluid flow around a rotating circular cylinder using RBVMS and IGA

The case of the flow around a rotating circular cylinder is very complex. This thesis investigates the properties of a fluid flow for Reynolds numbers ranging from 50 to 400. Numerical simulations are performed using a combination of isogeometric analysis and the residual-based variational multiscale method, providing high accuracy. The results...

Flettner rotor vessel design optimisation

One of the most promising methods to reduce harmful emissions in shipping is to apply wind-assisted propulsion on ships. Uncertainty about the potential fuel savings makes ship owners reluctant apply wind-assisted propulsion on a large scale. The goal of this thesis is to develop a method that identifies the aspects of a vessel design, that can...

Evaluation of the implementation of a Flettner rotor on a Exploration cruise vessel with respect to the roll motion and rotor-superstructure interaction