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1
Content available Increasing ship propulsion efficiency as an alternative to help reduce fuel consumption and CO2 emmision. Part 1
Szelangiewicz T., Żelazny K.
Journal of Polish CIMAC
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2012
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Vol. 7, no 1
227-233
EN
From 2013 onwards EEDI for newly built ships will become mandatory. Ships meeting the CO2 emission standards will be granted energy certificate for needed for exploitation. The article presents the EEDI in the current form, energy certification procedure as well as reduction of CO2 emission planned for coming years (Part I). The majority of ships built at present, meets the CO2 emission standards for 2013, yet their further decrease in subsequent years will consequently necessitate further actions as well. One of them is ship hull design of smaller resistance values and higher propulsion efficiency. The article (Part II) presents calculation results of the numerical analyses (CFD) performed for an actually built ship, aiming at decreasing propulsion power and therefore the EEDI value as well.
2
Content available Increasing ship propulsion efficiency as an alternative to help reduce fuel consumption and CO2 emmision. Part 2
Szelangiewicz T., Żelazny K.
Journal of Polish CIMAC
|
2012
|
Vol. 7, no 1
235-244
EN
From 2013 onwards EEDI for newly built ships will become mandatory. Ships meeting the CO2 emission standards will be granted energy certificate for needed for exploitation. The article presents the EEDI in the current form, energy certification procedure as well as reduction of CO2 emission planned for coming years (Part I). The majority of ships built at present, meets the CO2 emission standards for 2013, yet their further decrease in subsequent years will consequently necessitate further actions as well. One of them is ship hull design of smaller resistance values and higher propulsion efficiency. The article (Part II) presents calculation results of the numerical analyses (CFD) performed for an actually built ship, aiming at decreasing propulsion power and therefore the EEDI value as well.
3
Content available Numerical analysis of influence of selected elements on effectiveness of streamline rudder
Abramowski T., Szelangiewicz T.
Polish Maritime Research
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2010
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nr 3
3-7
EN
During designing steering gear for large fast transport ships (e.g. container carriers), shipowners usually put forward strong demands concerning ship manoeuvrability. It means that streamline rudders should be characterized by a high effectiveness, i.e. fast increasing values of lifting force in function of rudder angle and large values of lifting force related to rudder area. As gabarites of streamline rudder depend on a form and draught of stern part of ship’s hull, an improvement of rudder effectiveness can be reached by an appropriate selection of rudder profile and application of additional elements to rudder blade. This paper presents results of numerical investigations (by using CFD methods) of hydrodynamic forces acting on rudder blades of the same gabarites but based on different profiles. Such calculations were also performed for selected rudder blades fitted with additional elements intended for the improving of rudder effectiveness.
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