Energy Saving Devices Performance Assessment Using CFD

Abstract

In the wake of the new EEXI regulations, a lot of attention has been given to quantifying power savings (or losses) generated by various Energy Saving Devices available on the market. These come in many different variations, while the most popular and effective ones are typically based on pre-swirl and/or equalization of the ship wake upstream from the propeller. The new regulations and trends in shipping pressure shipowners to quantify the effect of these devices, giving rise to an uptake in CFD application for this purpose. In this paper we will share our findings on this topic gathered during the past 10 months of intense activity on the topic, in the attempt to draw general observations on the effectiveness of different ESDs.