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Numerical Simulation and Optimizatio...

dos Santos, Henrique Daniel Macedo Rios.

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Numerical Simulation and Optimization of an Overtopping Based Wave Energy Converter.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Numerical Simulation and Optimization of an Overtopping Based Wave Energy Converter./
作者:	dos Santos, Henrique Daniel Macedo Rios.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
面頁冊數:	130 p.
附註:	Source: Masters Abstracts International, Volume: 84-01.
Contained By:	Masters Abstracts International84-01.
標題:	Software. -
電子資源:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29150589
ISBN:	9798835567195

Numerical Simulation and Optimization of an Overtopping Based Wave Energy Converter.
dos Santos, Henrique Daniel Macedo Rios.

Numerical Simulation and Optimization of an Overtopping Based Wave Energy Converter. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 130 p.

Source: Masters Abstracts International, Volume: 84-01.

Thesis (M.E.)--Universidade do Porto (Portugal), 2015.

The consumption of energy has been increasing throughout the years, particularly the electric energy. Due to the negative impacts associated with the use of nonrenewable energy resources, the interest in the production of electric energy using renewable sources experienced a significant growth. In the course of this work, the ocean energy resources are briefly characterized, particularly the wave energy. Several technologies are currently available to harvest wave energy. In order to take advantage of the energy associated to the wave run-up and overtopping, the Sea-wave Slot-cone Generator (SSG) was idealized. This wave energy converter (WEC) captures the water that overtops the structure in elevated reservoirs. The stored water has potential energy that, when returned to the maritime environment, is converted in electricity by special low-head turbines. This thesis focuses in the numerical simulation and optimization of a SSG device and gives continuity to the experimental work carried out by Oliveira (2014). The numerical model WOPSim v3.11 (Meinert et al., 2008) was used to optimize the SSG geometry having into account typical conditions from the Portuguese west coast. The optimization study was carried out for an installation in the North breakwater of Foz do Douro, Porto, Portugal, having into account existing local conditions (water depth, wave climate, tidal range). WOPSim was applied to simulate the sea states and to calculate the hydraulic efficiency of the device, as well as to estimate the electric energy produced. The starting point was the work carried out by Oliveira (2014), and the study resulted in a new geometry with a better hydraulic performance. Finally, a Computational Fluid Dynamics numerical code (IHFOAM, developed at IH Cantabria), was applied to study the interaction between the incident waves and the SSG structure, and its hydraulic performance. The numerical simulations reproduced the conditions tested in the physical model study carried out by Oliveira (2014), in the Hydraulic Laboratory of FEUP - Faculty of Engineering of the University of Porto, Portugal. The numerical results obtained were then compared qualitatively with the experimental ones, in order to validate the numerical approach followed. Further studies will attempt to numerically analyze new test conditions, minimizing the need of additional physical model tests.

ISBN: 9798835567195Subjects--Topical Terms:

619355
Software.

Numerical Simulation and Optimization of an Overtopping Based Wave Energy Converter.
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520 $a The consumption of energy has been increasing throughout the years, particularly the electric energy. Due to the negative impacts associated with the use of nonrenewable energy resources, the interest in the production of electric energy using renewable sources experienced a significant growth. In the course of this work, the ocean energy resources are briefly characterized, particularly the wave energy. Several technologies are currently available to harvest wave energy. In order to take advantage of the energy associated to the wave run-up and overtopping, the Sea-wave Slot-cone Generator (SSG) was idealized. This wave energy converter (WEC) captures the water that overtops the structure in elevated reservoirs. The stored water has potential energy that, when returned to the maritime environment, is converted in electricity by special low-head turbines. This thesis focuses in the numerical simulation and optimization of a SSG device and gives continuity to the experimental work carried out by Oliveira (2014). The numerical model WOPSim v3.11 (Meinert et al., 2008) was used to optimize the SSG geometry having into account typical conditions from the Portuguese west coast. The optimization study was carried out for an installation in the North breakwater of Foz do Douro, Porto, Portugal, having into account existing local conditions (water depth, wave climate, tidal range). WOPSim was applied to simulate the sea states and to calculate the hydraulic efficiency of the device, as well as to estimate the electric energy produced. The starting point was the work carried out by Oliveira (2014), and the study resulted in a new geometry with a better hydraulic performance. Finally, a Computational Fluid Dynamics numerical code (IHFOAM, developed at IH Cantabria), was applied to study the interaction between the incident waves and the SSG structure, and its hydraulic performance. The numerical simulations reproduced the conditions tested in the physical model study carried out by Oliveira (2014), in the Hydraulic Laboratory of FEUP - Faculty of Engineering of the University of Porto, Portugal. The numerical results obtained were then compared qualitatively with the experimental ones, in order to validate the numerical approach followed. Further studies will attempt to numerically analyze new test conditions, minimizing the need of additional physical model tests.
520 $a Ao longo dos anos, o consumo de energia tem vindo a aumentar, particularmente de energia electrica. O interesse pela producao de energia electrica atraves de fontes renovaveis tem crescido devido aos efeitos negativos associados a utilizacao de fontes nao renovaveis. No decurso deste trabalho serao apresentadas as tecnologias disponiveis para o aproveitamento da energia maritima, com especial destaque para a energia das ondas. Com o intuito de aproveitar a energia associada ao galgamento de estruturas costeiras, foi idealizado um dispositivo chamado Sea-wave Slot-cone Generator (SSG), entre outros tambem apresentados na tese, que captura em reservatorios elevados a agua do mar. Essa agua, armazenada num nivel superior ao do mar, apresenta energia potencial e, quando devolvida ao meio maritimo, passa por turbinas hidraulicas que convertem essa energia em electricidade. Nesta dissertacao, a geometria do SSG foi otimizada atraves de simulacoes realizadas com o software WOPSim para condicoes de agitacao maritima tipicas da costa portuguesa. Este estudo teve assim por base as condicoes locais correspondentes a uma instalacao no molhe Norte da Foz do Douro, Porto, Portugal. O WOPSim foi utilizado, nao apenas para a simulacao dos estados de mar e calculo da eficiencia hidraulica do dispositivo para as varias condicoes estudadas, mas tambem para estimar a energia electrica produzida. O trabalho desenvolvido por Oliveira (2014) foi utilizado como ponto de partida, sendo, no entanto, proposta uma nova geometria para a estrutura, com melhor comportamento hidraulico. O modelo IHFOAM (codigo numerico CDF - Computational Fluid Dynamics) foi tambem utilizado para estudar a interacao da agitacao maritima com o dispositivo SSG e o seu desempenho hidraulico. Nesta segunda parte do trabalho foram simuladas ondas de caracteristicas similares as utilizadas no modelo fisico desenvolvido por Oliveira (2014) e testado no tanque de ondas do Laboratorio de Hidraulica da Faculdade de Engenharia da Universidade do Porto. Os resultados numericos foram, depois, comparados qualitativamente com os obtidos por Oliveira (2014), com o intuito de validar a abordagem numerica seguida. Estudos posteriores procurarao simular numericamente novas condicoes de teste, minimizando assim a necessidade de recorrer a testes experimentais.
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