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http://dx.doi.org/10.3744/SNAK.2019.56.4.373

Development and CFD Analysis of a New Type Pre-Swirl Duct for 176k Bulk Carrier  

Yoo, Gwang Yeol (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Kim, Moon Chan (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Shin, Yong Jin (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Shin, Irok (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Kim, Hyun Woong (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.56, no.4, 2019 , pp. 373-382 More about this Journal
Abstract
This paper shows numerical results for the estimation of the propulsor efficiency of Pre-Swirl Duct for 176k bulk carrier as well as its design method. Reynolds averaged Navier-Stokes equations have been solved and the k-epsilon model applied for the turbulent closure. The propeller rotating motion is determined using a sliding mesh technique. The design process is divided into each part of Pre-Swirl Duct, duct and Pre-Swirl Stator. The design of duct was performed first because it is located further upstream than Pre-Swirl Stator. The distribution of velocity through the duct was analyzed and applied for the design of Pre-Swirl Stator. The design variables of duct include duct angle, diameter, and chord length. Diameter, chord length, equivalent angle are considered when designing the Pre-Swirl Stator. Furthermore, a variable pitch angle stator is applied for the final model of Pre-Swirl Duct. The largest reduction rate of the delivered power in model scale is 7.6%. Streamlines, axial and tangential velocities under the condition that the Pre-Swirl Duct is installed were reviewed to verify its performance.
Keywords
CFD; Pre-Swirl Duct; Bulk carrier; Propulsion performance; Energy saving device;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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