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Design of Asymmetric Pre-swirl Stator for LNG Carrier according to Variation of Stator Shapes
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 Title & Authors
Design of Asymmetric Pre-swirl Stator for LNG Carrier according to Variation of Stator Shapes
Lee, Choel-Min; Shin, Yong-Jin; Kim, Moon-Chan; Choi, Jung-Eun; Chun, Ho-Hwan;
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 Abstract
Recently researchers are conducting a lot of research related to EEDI in order to satisfy IMO resolution MEPC. Especially they are interested in design of energy saving device. This paper is to design the asymmetric pre-swirl stator for 160K LNG carrier in order to reduce energy. Two types of the asymmetric pre-swirl stator are taken into account; constant and variable pitch angle stators. “constant” and “variable” mean state that the pitch of stators change by radius. The dimensions of the stators are initially determined using potential-flow code. The propulsion performances of the stators are predicted using viscous-flow code. The model test is carried out in towing tank in PNU. Prediction of ship performance generally follow ITTC recommended. Ship wake prediction was done by two method, ITTC 1978 and ITTC 1999. Therefore propulsion performances were compared ITTC 1978 with ITTC 1999 methods. Comparison components are delivered power and thrust deduction coefficient of the model. Final pre-swirl stator is selected by comparing experiment and CFD.
 Keywords
Asymmetric pre-swirl stator;LNG carrier;Potential flow;Computational Fluid Dynamics;Model test;
 Language
Korean
 Cited by
 References
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