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http://dx.doi.org/10.7837/kosomes.2021.27.7.1106

A Study on the Resistance Performance and Flow Characteristic of Ship with a Fin Attached on Stern Hull  

Lee, Jonghyeon (Shipbuilding & Marine Simulation Center, Tongmyong University)
Kim, Inseob (Smart Safety Research Department, Korea Maritime Transportation Safety Authority)
Park, Dong-Woo (School of Naval Architecture & Ocean Engineering, Tongmyong University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.27, no.7, 2021 , pp. 1106-1115 More about this Journal
Abstract
In this study, a fin that controls ship stern flow was attached on stern hull of a 80k bulk carrier to improve resistance performance. The rectangular cross-sectional fin was attached at several locations on the hull, and angle to streamline was changed with constant length, breadth, and thickness. The resistance performance and wake on propeller plane of the hull with and without the fin were analyzed using model-scale computational fluid dynamics simulation. The analysis results were extrapolated to full-scale to compare the performance and wake of the full-scale ship. First, the fin changed path of bilge vortex that flowed into the propeller along the stern hull without the fin to transom stern. This change increased pressure of the stern hull and upper region of the propeller, so pressure resistance and total resistance of the hull were reduced - the nearer the fin location to after perpendicular (AP) and base line of the hull, the larger the reduction of the resistances. Second, nominal wake fraction of the hull with the fin was lower than that without the fin. This dif erence was in proportion to the angle of the fin, but the total resistance reduction was in proportion until a certain angle at which the reduction was maximum. The largest total resistance reduction was approximately 2.1% at 12.5% of length between perpendiculars from the AP, 10% of draft from the base line, and 14° with respect to the streamline.
Keywords
80k bulk carrier; Fin; Ship stern flow; Resistance performance; Wake; Computational fluid dynamics;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Park, D. W., H. J. Choi, H. S. Yoon, and H. H. Chun(2009), A Numerical Study for Improvement of the Speed-Performance of a Ship with Flow Control Flat Plate, Journal of the Society of Naval Architects of Korea, Vol. 46, No. 3, pp. 268-278.   DOI
2 Ram, B. R. R., S. Surendran, and S. K. Lee(2015), Computer and Experimental Simulations on the Fin Effect on Ship Resistance, Ships and Offshore Structures, Vol. 10, No. 2, pp. 122-131.   DOI
3 Sarkar, S. and L. Balakrishnan(1991), Application of a Reynolds-Stress Turbulence Model to the Compressible Shear Layer, American Institute of Aeronautics and Astronautics (AIAA) Journal, Vol. 29, No. 5, pp. 743-749.   DOI
4 Samsung Heavy Industry(2007), Flow control appendages for improvement of pressure resistance and hull vibration, Korean patent, 1007189340000 B1.
5 Wie, D. E. and D. J. Kim(2012), The Design Optimization of a Flow Control Fin Using CFD, Journal of the Society of Naval Architects of Korea, Vol. 49, No. 2, pp. 174-181.   DOI
6 CD-adapco(2018), STAR-CCM+ User Guide, Ver. 13.02.
7 Gibson, M. M. and B. E. Launder(1978), Ground Effects on Pressure Fluctuations in the Atmospheric Boundary Layer, Journal of Fluid Mechanics, Vol. 86, No. 3, pp. 491-511.   DOI
8 Harvald, S. A.(1983), Resistance and Propulsion of Ships, John Wiley & Sons, USA, pp. 98-100.
9 International Towing Tank Conference(ITTC)(1999), Performance, Propulsion, 1978 ITTC Performance Prediction Method, Recommended Procedures and Guidelines, 7.5-02-03-01.4, pp. 3-4.
10 International Towing Tank Conference(ITTC)(2011), Fresh Water and Seawater Properties, Recommended Procedures, 7.5-02-01-03, pp. 3-9.
11 International Towing Tank Conference(ITTC)(2014), Practical Guidelines for Ship CFD Applications, Practical Guidelines for Ship CFD Applications, 7.5-03-02-03, pp. 16.
12 Kim, D. J., W. J. Oh, J. W. Park, and S. M. Jeong(2016), A Study on Flow Characteristics due to Dimension Variations of the Vertical Plate for Controlling the Ship Stern Flow, Journal of the Korean Society of Marine Environment & Safety, Vol. 22, No. 5, pp. 576-582.   DOI
13 International Towing Tank Conference(ITTC)(2017), Uncertainty Analysis in CFD, Verification and Validation Methodology and Procedures, Recommended Procedures and Guidelines, 7.5-03-01-01, pp. 4-8.
14 Lee, J. H. and D. W. Park(2021), A Study on the Scale Effect and Improvement of Resistance Performance Based on Running Attitude Control of Small High-Speed Vessel, Journal of the Korean Society of Marine Environment & Safety, Vol. 27, No. 4, pp. 538-549.   DOI
15 Todd, F. H.(1957), Skin Friction and Turbulence Stimulation, Proceedings of the 8th ITTC Conference, Madrid, September 1957, pp. 71-227.
16 Courant, R., K. Friedrichs, and H. Lewy(1967), On the Partial Difference Equations of Mathematical Physics, International Business Machines Corporation (IBM) Journal of Research and Development, Vol. 11, No. 2, pp. 215-234.
17 Ferziger, J. H. and M. Peric(2002), Computational Methods for Fluid Dynamics, 3rd Edition, Springer, Germany, pp. 292-294.
18 Lien, F. S. and M. A. Leschziner(1994), Assessment of Turbulence-Transport Models Including Non-Linear RNG Eddy-Viscosity Formulation and Second-Moment Closure for Flow over a Backward-Facing Step, Computers & Fluids, Vol. 23, No. 8, pp. 983-1004.   DOI
19 Rodi, W.(1991), Experience with Two-Layer Models Combining the k-e Model with a One-Equation Model Near the Wall, 29th Aerospace Sciences Meeting, Reno, January 1991, AIAA 91-0216.