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http://dx.doi.org/10.3744/SNAK.2014.51.2.154

The Effect of Hull Appendages on Maneuverability of Naval Ship by Sensitivity Analysis  

Kim, Dae Hyuk (Seoul National University, Dept. of Naval Architecture & Ocean Engineering)
Rhee, Key-Pyo (Seoul National University, Dept. of Naval Architecture & Ocean Engineering)
Kim, Nakwan (Seoul National University, Dept. of Naval Architecture & Ocean Engineering)
Publication Information
Journal of the Society of Naval Architects of Korea / v.51, no.2, 2014 , pp. 154-161 More about this Journal
Abstract
Naval ships have hull appendages which are more exposed to the outside because of its small block coefficient compared with commercial ships. These exposed hull appendages like skeg, strut and shaft line affect the maneuverability of a ship. The effect of hull appendages has considered at initial design stage to estimate more accurate maneuverability. In this paper, sensitivity analysis is used to analyze the effect on maneuverability by hull appendages. 3 DOF maneuvering equations based on Mathematical Modelling Group (MMG) model are used and propeller & rudder model are modified to reflect the characteristics of twin propeller & twin rudder. Numerical maneuvering simulations (Turning test, Zig-zag test) for benchmark naval vessel, David Taylor Model Basin (DTMB) 5415 are performed. In every simulation, it is calculated that stability indices and maneuverability characteristics (Tactical Dia., Advance, 1st Overshoot, Time of complete cycle) with respect to the parameters (area times lift coefficient slope, attachment location) of hull appendages. As a result, two regression formulas are established. One is the relation of maneuverability characteristics and stability indices and the other is the relation of stability indices and hull appendages.
Keywords
Maneuverability of naval ship; Hydrodynamic derivatives; Sensitivity analysis; Hull appendages;
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Times Cited By KSCI : 3  (Citation Analysis)
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