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dc.contributor.author Davyt, Djavan Perez
dc.contributor.author Teixeira, Paulo Roberto de Freitas
dc.contributor.author Ramalhais, Rúben dos Santos
dc.contributor.author Didier, Eric Lionel
dc.date.accessioned 2015-06-19T17:33:26Z
dc.date.available 2015-06-19T17:33:26Z
dc.date.issued 2010
dc.identifier.citation DAVYT, Djavan Perez et al. Numerical analysis of regular waves over an onshore oscillating water column. In: ENCIT - BRAZILIAN CONGRESS OF THERMAL SCIENCES AND ENGINEERING, 13., 2010, Uberlândia. Anais... Uberlândia: Associação Brasileira de Engenharia e Ciências Mecânicas – ABCM, 2010. Disponível em: <http://www.abcm.org.br/anais/encit/2010/PDF/ENC10-0122.pdf>. Acesso em: 18 jun. 2015. pt_BR
dc.identifier.uri http://repositorio.furg.br/handle/1/5045
dc.description.abstract The potential of wave energy along coastal areas is a particularly attractive option in regions of high latitude, such as the coasts of northern Europe, North America, New Zealand, Chile and Argentina where high densities of annual average wave energy are found (typically between 40 and 100 kW/m of wave front). Power estimated in the south of Brazil is 30kW/m, creating a possible alternative of source energy in the region. There are many types and designs of equipment to capture energy from waves under analysis, such as the oscillating water column type (OWC) which has been one of the first to be developed and installed at sea. Despite being one of the most analyzed wave energy converter devices, there are few case studies using numerical simulation. In this context, the numerical analysis of regular waves over an onshore OWC is the main objective of this paper. The numerical models FLUINCO and FLUENT® are used for achieving this goal. The FLUINCO model is based on RANS equations which are discretized using the two-step semi-implicit Taylor-Galerkin method. An arbitrary lagrangean eulerian formulation is used to enable the solution of problems involving free surface movements. The FLUENT® code (version 6.3.26) is based on the finite volume method to solve RANS equations. Volume of Fluid method (VOF) is used for modeling free surface flows. Time integration is achieved by a second order implicit scheme, momentum equations are discretized using MUSCL scheme and HRIC (High Resolution Interface Capturing) scheme is used for convective term of VOF transport equation. The case study consists of a 10.m deep channel with a 10 m wide chamber at its end. One meter high waves with different periods are simulated. Comparisons between FLUINCO and FLUENT results are presented. Free surface elevation inside the chamber; velocity distribution and streamlines; amplification factor (relation between wave height inside the chamber and incident wave height); phase angle (angular difference between the wave inside and outside the chamber); and sloshing parameter to quantify it inside the chamber are analised. Finally, a discussion of the potential and limitations of each numerical model as well as the behaviour of the onshore OWC device is presented. pt_BR
dc.language.iso eng pt_BR
dc.rights open access pt_BR
dc.subject Wave energy pt_BR
dc.subject Oscillating water column pt_BR
dc.subject Numerical simulation pt_BR
dc.subject Finite element method pt_BR
dc.subject Finite volume method pt_BR
dc.title Numerical analysis of regular waves over an onshore oscillating water column pt_BR
dc.type conferenceObject pt_BR


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