Computational fluid dynamics predictions of draught and trim variations on ship resistance in confined waters
Campbell, Ruaraidh and Terziev, Momchil and Tezdogan, Tahsin and Incecik, Atilla (2022) Computational fluid dynamics predictions of draught and trim variations on ship resistance in confined waters. Applied Ocean Research, 126. 103301. ISSN 0141-1187 (https://doi.org/10.1016/j.apor.2022.103301)
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Abstract
Adjusting a vessel's trim and draught to enhance resistance characteristics is a promising strategy to improve the energy efficiency of maritime transport. However, the vast majority of scientific effort has been directed at such gains in deep, unrestricted waters. Shallow and confined waters modify the flow and pressure distribution around a ship, altering considerably the resistance curve. This study aims to elucidate trim and draught increase effects on a ship's resistance while advancing through a restricted waterway using Computational Fluid Dynamics. The results show that increasing the draught of a benchmark hull magnifies the hydrodynamic resistance by approximately 10% to 15% depending on the ship speed. This added hydrodynamic resistance may be compensated by adjusting the vessels’ trim, but the ability to compensate the added hydrodynamic resistance is sensitive to ship's speed. At low speeds, the numerical model predicts the increase in resistance due to a 10% higher draught can be reduced by varying the trim angle leaving the total resistance 0.87% higher than at the design draught and zero trim angle condition. On the other hand, higher speeds offer a greater potential for resistance reduction through trim.
ORCID iDs
Campbell, Ruaraidh, Terziev, Momchil ORCID: https://orcid.org/0000-0002-1664-6186, Tezdogan, Tahsin ORCID: https://orcid.org/0000-0002-7032-3038 and Incecik, Atilla;-
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Item type: Article ID code: 81583 Dates: DateEvent30 September 2022Published1 August 2022Published Online26 July 2022Accepted22 July 2021SubmittedSubjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering
Technology > Hydraulic engineering. Ocean engineeringDepartment: Faculty of Engineering
Faculty of Engineering > Naval Architecture, Ocean & Marine EngineeringDepositing user: Pure Administrator Date deposited: 27 Jul 2022 08:47 Last modified: 02 Dec 2024 01:25 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/81583