Experimental investigation on the effect of leading edge tubercles on the performance of marine propellers in fully wet condition
Falchi, Massimo and Ortolani, Fabrizio and Shi, Weichao and Stark, Callum and Aloisio, Giovanni and Grizzi, Silvano and Dubbioso, Giulio (2022) Experimental investigation on the effect of leading edge tubercles on the performance of marine propellers in fully wet condition. Ocean Engineering, 255. 111249. ISSN 0029-8018 (https://doi.org/10.1016/j.oceaneng.2022.111249)
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Abstract
Leading edge tubercles (LET) is an attractive passive flow control solution that has been proved to enhance the hydrodynamic performance and efficiency of lifting surfaces adopted in many engineering areas. Nonetheless, their industrial application in control and propulsion devices of marine vehicles is still at the beginning. To move further steps ahead, a preliminary experimental campaign for a five bladed Wageningen B-screw propeller modified with three different configurations of leading edge tubercles was carried out in cavitation free conditions. In particular, the propellers were tested in open water conditions in straight and oblique flow at incidences of 10° and 20°, with the aim to study the effects of LET during steady and moderate unsteady conditions. The propellers are tested at two different chord Reynolds numbers in order to investigate their applicability also to small autonomous marine vehicles. The analysis proved that suitable layout of tubercles can enhance the hydrodynamic efficiency in axial symmetric flow while reducing undesired effects caused by operation in off-design.
ORCID iDs
Falchi, Massimo, Ortolani, Fabrizio, Shi, Weichao ORCID: https://orcid.org/0000-0001-9730-7313, Stark, Callum ORCID: https://orcid.org/0000-0001-7391-5197, Aloisio, Giovanni, Grizzi, Silvano and Dubbioso, Giulio;-
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Item type: Article ID code: 80727 Dates: DateEvent1 July 2022Published6 May 2022Published Online1 April 2022Accepted14 December 2021SubmittedSubjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering Depositing user: Pure Administrator Date deposited: 16 May 2022 13:20 Last modified: 29 Aug 2024 00:58 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/80727