Open Access Repository

Inline forces and bow wave height on a vertical cylinder moving in waves — Experimental study and CFD validation

Elhanafi, A ORCID: 0000-0001-7866-9036, Duffy, JT ORCID: 0000-0003-3484-1345, MacFarlane, GJ ORCID: 0000-0002-0518-430X, Binns, JR ORCID: 0000-0001-6892-0063 and Keough, SJ 2021 , 'Inline forces and bow wave height on a vertical cylinder moving in waves — Experimental study and CFD validation' , Journal of Fluids and Structures, vol. 107 , pp. 1-21 , doi: 10.1016/j.jfluidstructs.2021.103387.

Full text not available from this repository.

Abstract

The aim of this paper is to investigate the inline force and bow wave height on avertical cylinder moving at a constant forward speed in calm water and in regularwaves. A series of physical model tests has been performed to investigate the effectthe waves have on both the inline force and the bow wave height as well as to validatea Computational Fluid Dynamics (CFD) model that was developed using Caelus opensource code. A stationary mesh was used in the CFD model and a new wave library wascreated based on the relaxation zone technique to incorporate the effect of adding acurrent with velocity equal to the speed of the moving cylinder while still generatingthe targeted wave field. The CFD results were compared to the physical measurementsfor the following cases: (1) generation of regular waves and current, (2) inline force andbow wave height on the cylinder moving in calm water and (3) inline force and bowwave height on the cylinder moving in regular waves. It was found from the model teststhat both the inline force and bow wave height increased as cylinder speed increased.The maximum inline force and bow wave height measured on a stationary cylindersubjected to waves was amplified up to 9.6 and 2.7 times, respectively depending on thecylinder speed in case 3, which indicated a nonlinear relationship between the variationin maximum inline force and bow wave height due to wave–current interaction. Thecapability of the CFD model has been illustrated by the very good agreement (errorsof about 3.0%) achieved with respect to the experiments for the different conditions ofincreasing complexity tested in this study.

Item Type: Article
Authors/Creators:Elhanafi, A and Duffy, JT and MacFarlane, GJ and Binns, JR and Keough, SJ
Keywords: vertical cylinder, experiments, CFD caelus, bow wave height, forces on a vertical cylinder, wave-current interaction
Journal or Publication Title: Journal of Fluids and Structures
Publisher: Academic Press
ISSN: 0889-9746
DOI / ID Number: 10.1016/j.jfluidstructs.2021.103387
Copyright Information:

© 2021 Elsevier Ltd. All rights reserved.

Related URLs:
Item Statistics: View statistics for this item

Actions (login required)

Item Control Page Item Control Page
TOP