Numerical analysis of the effect of deflectors inserted inside the duct of an oscillating water column device with an existing Savonius turbine

Authors

DOI:

https://doi.org/10.5902/2179460X87150

Keywords:

Oscillating water column, Savonius turbine, Deflectors, Turbulent flows

Abstract

In this work, a comparison between three different configurations of deflectors inserted inside the duct of an oscillating water column device (OWC), where is attached a rotating Savonius turbine in the same domain, is done. In the first configuration, the numerical model is composed only by the Savonius turbine inside the OWC duct. In the second configuration, just one deflector is inserted upstream of the turbine region. In the third case, a second deflector is inserted, together with the first one, but downstream of the turbine. For every studied model, the geometry of the hydropneumatic chamber was varied by three values of the ratio H1/L1 (the height times the length). This geometric variation was performed according to the Constructal Design methodology. The purpose of this comparison was the evaluation of the OWC pneumatic power, the power coefficient, and the Savonius turbine power. The results indicated that for all the studied configurations, the ratio H1/L1 as well as the deflectors presence inside the OWC duct had an influence in terms of the performance indicators, especially regarding the pneumatic power, where variations up to 100 W were noticed.

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Author Biographies

Andrei Luis Garcia Santos, Universidade Federal do Rio Grande

Graduated in Mechanical Engineering from the Federal University of Rio Grande - FURG (2010), he holds a master's degree in Ocean Engineering from the Federal University of Rio Grande - FURG (2018). Currently, PhD student in the graduate program in Computational Modeling - FURG. Professional experience in the areas of mechanical maintenance in the rice processing industry, planning, field engineering and commissioning in the construction and assembly of the shipbuilding industry. Currently, he works in the field of wind farm projects.

Rodrigo Spotorno Vieira, Universidade Federal do Rio Grande

Professor at the Anhanguera College of Rio Grande and former professor at the Federal University of Rio Grande, in the areas of hydraulic and pneumatic systems, transport phenomenon and thermodynamics. He holds a degree in Mechanical Engineering from the Federal University of Rio Grande (2013), a master's degree in Ocean Engineering from the Federal University of Rio Grande (2015), with an emphasis on renewable energies and a PhD in Mechanical Engineering from the Federal University of Rio Grande do Sul (2022) in the area of energy, in which the main areas of interest are thermal and wind energy, working mainly in numerical analysis of the working principle of devices used in the conversion of renewable energies into electrical energy (wind energy, solar chimneys and wave energy converter devices), and geometric evaluation of engineering problems using Constructive Design.

Filipe Branco Teixeira, Universidade Federal do Rio Grande

Holds a degree in Chemical Engineering from the Federal University of Rio Grande - FURG (2010), is a specialist in Environmental Management and Sustainable Development from UNINTER Educacional (2013), has an MBA in Project Management from the University of Vale do Rio dos Sinos (2015), a Master's degree in Ocean Engineering from the Federal University of Rio Grande - FURG (2017) and a PhD in Mechanical Engineering from the Federal University of Rio Grande do Sul (UFRGS) in the area of Transport Phenomena. Has experience in the area of the environment where he worked professionally in the Laboratory of physicochemical analysis ISATEC in the Environmental Engineering sector, and in industrial technical design working for Engecampo Engenharia LTDA. He worked as a substitute assistant professor at the Anhanguera Educational University in the discipline of Mechanical Construction Materials II. He currently holds the position of Administration Technician at the Federal University of Rio Grande - FURG

 

Gustavo Dias, Universidade Federal do Rio Grande

Holds a degree in Business Mechanical Engineering from the Federal University of Rio Grande (2007), a postgraduate degree from Fundação Getúlio Vargas in Project Management (2010). MSc in Ocean Engineering from the Federal University of Rio Grande (2014) and PhD in Mechanical Engineering from the Federal University of Rio Grande do Sul - UFRGS - (2019). Has experience in electricity distribution in the area of losses and measurement. He is currently a professor at the School of Engineering of the Federal University of Rio Grande (FURG) of the Mechanical Engineering courses. He develops research on micro wind and hydraulic turbines in the experimental area for power generation from incompressible fluids.

Luiz Alberto Oliveira Rocha, Universidade Federal do Rio Grande

Holds a bachelor's degree in Automotive Mechanical Engineering from the Military Institute of Engineering (1991), a master's degree in Mechanical Engineering from the Pontifical Catholic University of Rio de Janeiro (1995), a PhD in Mechanical Engineering from Duke University (2002) and a postdoctoral degree in the area of Turbulence from the Institute of Hydraulic Research/UFRGS/RS (2006). He has experience in the area of Mechanical Engineering, with emphasis on Thermodynamics, Fluid Mechanics and Heat Transfer, working mainly on the following topics: Geometric Optimization, Energy and Exergy Analysis, Alternative/Renewable Energies, Constructal Theory and Design, Modeling, Simulation and Optimization of Systems. He is currently a visiting professor in the PPGs of Mechanical Engineering at UFRGS, Computational Modeling and Ocean Engineering at FURG, and also works as a collaborating researcher at the Laboratory of Complex Flow Systems at the Institute of Earth Sciences of the University of Évora in Portugal.

Liércio André Isoldi, Universidade Federal do Rio Grande

Holds a Technical Course in Mechanics from the Federal Technical School of Pelotas (1993), a Bachelor's Degree in Mechanical Engineering from the Federal University of Rio Grande (1999), a Bachelor's Degree in Civil Engineering from the Federal University of Rio Grande (1999), a Master's Degree in Ocean Engineering (PPGEO) from the Federal University of Rio Grande (2002), a PhD in Engineering (PROMEC) from the Federal University of Rio Grande do Sul (2008) and a Post-Doctorate linked to the Graduate Program in Computational Modeling (PPGMC) of the Federal University of Rio Grande (2009). He is currently Associate Professor IV (40h - DE) at the School of Engineering (EE) of the Federal University of Rio Grande (FURG), Permanent Professor of the Graduate Program in Computational Modeling (PPGMC-FURG) and the Graduate Program in Ocean Engineering (PPGEO-FURG). 

Elizaldo Domingues dos Santos, Universidade Federal do Rio Grande

Holds a bachelor's degree in Mechanical Engineering from the Federal University of Rio Grande (2004), a master's degree from the Federal University of Rio Grande do Sul (2007) and a PhD from the Federal University of Rio Grande do Sul (2011). He has experience in the field of mechanical engineering with emphasis on fluid mechanics, heat transfer, thermodynamics, computational fluid dynamics, renewable energy sources and design. He is currently an Associate Professor IV at the Federal University of Rio Grande (FURG) and permanent professor of the Graduate Programs in Computational Modeling (PPGMC) and Ocean Engineering (PPGEO).

Jeferson Avila Souza, Universidade Federal do Rio Grande

PhD in Mechanical Engineering from t Universidade Federal do Paraná (2004) and Post-Doctorate from Florida State University, USA.

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Santos, A. L. G., Teixeira, F. B., Isoldi, L. A., Souza, J. A., Gomes, M. D. N., Rocha, L. A. O., Dos Santos, E. D. (2021). Numerical Analysis of a Savonius Turbine Inserted in Oscillating Water Column Wave Energy Converter. Proceedings of the 26th International Congress of Mechanical Engineering (2021), Florianópolis, SC, Brazil.

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Published

2024-11-04

How to Cite

Santos, A. L. G., Vieira, R. S., Teixeira, F. B., Dias, G., Rocha, L. A. O., Isoldi, L. A., Santos, E. D. dos, & Souza, J. A. (2024). Numerical analysis of the effect of deflectors inserted inside the duct of an oscillating water column device with an existing Savonius turbine. Ciência E Natura, 46(esp. 1), e87150. https://doi.org/10.5902/2179460X87150

Issue

Vol. 46 No. esp. 1 (2024): ERMAC e ENMC

Section

Special Edition 1

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