Pregledni rad
https://doi.org/10.21857/yrvgqtwoo9
Hydro-structural issues in the design of energy saving devices for ships
Andro Bakica
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Nikola Vladimir
orcid.org/0000-0001-9164-1361
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Ivo Senjanović
; Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb, Croatia
Sažetak
The shipping sector is currently under growing pressure concerning the GHGs emission restriction prescribed by the International Maritime Organization (IMO). Improving the efficiency of the fleet has always been an attractive subject to the shipowners, but with the new regulations, the reduction in fossil fuel consumption has switched from optional economic benefit to a rule. One of the ways for the ship to comply with the new regulations is by installing or retrofitting Energy Saving Devices (ESDs). The ESDs exploit the axial and rotational energy losses inevitably produced by the propeller operation. The ESDs differ in shape, position and kind of energy to be recovered. This article gives an overview of the current trends and practices in the field of the ESDs, along with their classification and type of operation. Furthermore, besides the hydrodynamic design, which still holds the primary importance, structural issues are also addressed, since this subject is rarely investigated in the literature. Given the complex flow field of the ESDs influenced by propeller, ship motions, wake field and waves, applicability of numerical models is described in detail, whereby the state-of-the-art approaches are clearly highlighted. Overall, the ESDs are expected to further mature in the future given the rigid rules, the promising potential of efficiency improvements they offer and the lowcost of installation.
Ključne riječi
energy saving devices; hydrodynamic analysis; structural analysis; fuel savings; environmental impact
Hrčak ID:
307616
URI
Datum izdavanja:
7.9.2023.
Posjeta: 194 *