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Finite element analysis of second order wave resonance by multiple cylinders in a uniform current

Yang, YF; Wang, CZ; (2020) Finite element analysis of second order wave resonance by multiple cylinders in a uniform current. Applied Ocean Research , 100 , Article 102132. 10.1016/j.apor.2020.102132. Green open access

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Abstract

The purpose of this paper is to study the diffraction of second order Stokes waves by four cylinders in a uniform current and mainly focus on the near-trapping phenomenon. A time domain second-order theory is employed to establish the mathematical Smodel by splitting the total potential into the disturbed velocity potential caused by current, the first- or linear and second-order potentials, which satisfy their own boundary conditions. Each potential is calculated through the finite element method (FEM). Numerical results for four bottom-mounted cylinders in a uniform current are provided to show the resonant behaviour of waves and hydrodynamic forces including linear and second order at near-trapped frequencies, and the current effect on the wave and force are also analysed and discussed. Some results for a single- and four-cylinder cases are compared with previous studies.

Type: Article
Title: Finite element analysis of second order wave resonance by multiple cylinders in a uniform current
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.apor.2020.102132
Publisher version: https://doi.org/10.1016/j.apor.2020.102132
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Oceanography, Engineering, Second order wave diffraction, finite element method, wave resonance, uniform current, multiple cylinders, FULLY NONLINEAR-INTERACTION, HYDRODYNAMIC INTERACTIONS, VERTICAL CYLINDERS, DIFFRACTION LOADS, BODY INTERACTIONS, STEEP WAVES, RUN-UP, ARRAYS, FORCES, WATER
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10136437
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