Parametric modeling of a propulsive system

Parametric modeling and optimization of a marine propulsive system using STAR-CCM+, OPTIMATE+ and CAESES

The aim of the study is to generate a fully-parametric marine propeller and propulsion system geometry to optimize the efficiency of the propeller using STAR-CCM+ and Optimate+ by CD-adapco.

Optimizing a marine propulsive system is a difficult task mainly caused by the complexity of the propeller geometry and its parametrization.

Self-propulsion simulation with a pre-swirl stator

The ever ongoing quest for more efficient propulsion in the marine sector leads to the development and improvement of energy saving devices such as a pre-swirl stator.  Wärtsila has joined this quest to lower fuel consumption will reduce operating costs and emissions. The targeted market segments are bulk carriers and container ships.

Modeling of 2D irregular waves on a sloped bottom

The present work explains and validates a method to numerically reproduce two dimensional  irregular sea states in a wave basin without knowing the paddle motion and with the only the wave elevation measured at the inlet of the wave tank. The free surface elevation is numerically treated, a cut off to the spectrum was applied reduce the number of frequencies is applied and finally a linear reflection analysis is then tapplied with the assumption that the free surface elevation at any location in the domain can be described by a Fourier series.