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http://dx.doi.org/10.7837/kosomes.2022.28.6.1070

Numerical Simulation for Improvement in Resistance Performance by Bulb Retrofit under Optimal Trim Conditions  

Park, Hyunsuk (Decarbonization Solution Center, Korean Register)
Seo, Dae-Won (Department of Naval Architecture and Ocean Engineering, Kunsan National University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.28, no.6, 2022 , pp. 1070-1077 More about this Journal
Abstract
The International Maritime Organization has recently strengthened its marine environment regulations. The energy efficiency index has long been an important indicator of ship design, and now, energy efficiency is being enforced for existing ships as well as new ships. To increase the energy efficiency of existing ships, methods such as retrofitting the bow bulb, selecting an optimized trim during ship operation, and installing an energy saving device have been applied. In this study, the ship resistance was numerically simulated using computational fluid dynamics (CFD) under various bow and stern trim conditions. In addition, the bulb was redesigned to further improve the resistance performance under the selected trim conditions. When the improved bulb was applied, the effective horse power increased by approximately 5%. It is, however, necessary to verify whether the redesigned bulb can reduce ship resistance in waves.
Keywords
Existing ship; Energy ef iciency; Resistance; Bulb; Trim optimization;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 Kim, H. S., D. W. Park, and Y. J. Yang(2019), Analysis of Resistance Performance of a Ship having a Large Attitude based on CFD, Journal of the Korean Society of Marine Environment & Safety, Vol. 25, No. 7, pp. 961-967.   DOI
2 Park, J. and N. Kim(2014), A Comparison and Analysis of Ship Optimal Routing Scenarios considering Ocean Environment, Journal of the Society of Naval Architects of Korea, Vol. 51, No. 2, pp. 99-106.   DOI
3 Lee, J. 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
4 Park, D. W., S. B. Lee, S. S. Chung, H. W. Seo, and J. W. Kwon(2013), Effect of Trim on Resistance Performance of a Ship, Journal of the Society of Naval Architects of Korea, Vol. 50, No. 2, pp. 88-94.   DOI
5 Petursson, S.(2009), Predicting Optimal Trim Configuration of Marine Vessels with respect to Fuel Usage, Master's thesis, School of Engineering and Natural Sciences, University of Iceland.
6 Seo, D. W., H. S. Park, and K. M. Han(2015), Analysis of Resistance Performance for Various Trim Conditions on Container ship Using CFD. Journal of Ocean Engineering and Technology, 29(3), pp. 224-230.   DOI
7 Sherbaz, S. and W. Duan(2014), Ship Trim Optimization : Assessment of Influence of Trim on Resistance of MOERI Container Ship, The Scientific World Journal, Vol. 2014, pp. 1-6.