Experimental and theoretical study of the effect of hull roughness on ship resistance
Song, Soonseok and Dai, Saishuai and Demirel, Yigit Kemal and Atlar, Mehmet and Day, Sandy and Turan, Osman (2021) Experimental and theoretical study of the effect of hull roughness on ship resistance. Journal of Ship Research, 65 (1). pp. 62-71. ISSN 0022-4502 (https://doi.org/10.5957/JOSR.07190040)
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Abstract
Hull roughness increases ship frictional resistance and, thus, results in economic and environmental penalties. Its effect has been prevalently predicted using the similarity law scaling procedure. However, this method has not yet been validated with experimental data using a model ship. This study presents an experimental investigation into the effect of roughness on ship resistance and provides a validation of the similarity law scaling, by using tank testing of a flat plate and a model ship. Both the plate and the ship were tested in smooth and rough surface conditions, respectively. For the rough surface conditions, sand grit (aluminum oxide abrasive powder) was applied on the surfaces of the flat plate and the ship model. The roughness functions of the rough surface were derived by using the results obtained from the flat plate tests. Using the roughness function and the flat plate towing test, frictional resistance was extrapolated to the length of the model ship following the similarity law scaling procedure. The total resistance of the rough ship model was first predicted using the extrapolated frictional resistance and the result of the smooth ship model, and then compared with the results from the rough ship model. The predicted total resistance coefficients for the rough ship model showed a good agreement with the measured total resistance coefficient of the rough ship model, thus proving the validity of using Granville’s similarity law scaling to extrapolate the roughness effect on ship resistance.
ORCID iDs
Song, Soonseok ORCID: https://orcid.org/0000-0002-7685-1026, Dai, Saishuai ORCID: https://orcid.org/0000-0002-9666-6346, Demirel, Yigit Kemal ORCID: https://orcid.org/0000-0001-6739-4911, Atlar, Mehmet, Day, Sandy ORCID: https://orcid.org/0000-0001-6798-3468 and Turan, Osman;-
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Item type: Article ID code: 71534 Dates: DateEvent17 March 2021Published31 August 2020Published Online9 February 2020Accepted3 July 2019SubmittedSubjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering
Strategic Research Themes > Ocean, Air and SpaceDepositing user: Pure Administrator Date deposited: 24 Feb 2020 09:27 Last modified: 12 Dec 2024 08:18 URI: https://strathprints.strath.ac.uk/id/eprint/71534