Journals / Seatific Journal / 2024 / Volume: 4 Issue: 2

Development of a Numerical Modeling of the Flow in an Overtopping Device with Coupled Savonius Turbine

Elizaldo Dos Santos(Federal University of Rio Grande (FURG))0000-0003-4566-2350
Vinicius Heitmann Avila(Federal University of Rio Grande (FURG))
Rafael Gonçalves(Federal University of Rio Grande (FURG))0000-0002-8022-6880
Jaifer Martins(Federal University of Rio Grande (FURG))0000-0002-2689-9267
Emanuel Estrada(Federal University of Rio Grande (FURG))0000-0003-4088-5002
Liércio Isoldi(Federal University of Rio Grande (FURG))0000-0002-9337-3169
Luiz Rocha(Federal University of Rio Grande do Sul (UFRGS))0000-0003-2409-3152
Pages
—
Publication Date
2024-12-30
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

After this step, the two models are coupled and results showed that the coupling was successful, allowing the observation of the flow behavior in the complete model.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The study of wave energy conversion (WEC) technologies has been growing, with an emphasis on the overtopping device.
📊
Key Findings & Data:This study deals with the computa-tional modeling of a multiphase (air and water), turbulent, incompressible flow with constant thermo-physical properties, generated by the movement of numerical ocean waves.
💡
Conclusion & Impact:After this step, the two models are coupled and results showed that the coupling was successful, allowing the observation of the flow behavior in the complete model.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Overtopping Device · Savonius Turbine · Sea Wave Energy

Abstract

The study of wave energy conversion (WEC) technologies has been growing, with an emphasis on the overtopping device. Its operation is based on a ramp that directs wave water into an elevated reservoir. The accumulated water flows through a low-head tur-bine, generating electricity. This study proposes to develop a complete computational model to simulate a wave channel containing an overtopping device with a Savonius-type turbine inserted in the device's outlet duct. This study deals with the computa-tional modeling of a multiphase (air and water), turbulent, incompressible flow with constant thermo-physical properties, generated by the movement of numerical ocean waves. Verification/validation studies were conducted to guarantee the reliability of the separated models: i) flow in overtopping device without turbine, ii) flow over a free Savonius turbine. After this step, the two models are coupled and results showed that the coupling was successful, allowing the observation of the flow behavior in the complete model. Despite that, the computational model still needs adjustments to the turbine rotation and outlet channel geometry.

🔖

Cite This Article

Santos, E. D., Avila, V. H., Gonçalves, R., Martins, J., Estrada, E., Isoldi, L., Rocha, L. (2024). Development of a Numerical Modeling of the Flow in an Overtopping Device with Coupled Savonius Turbine. Seatific Journal, Volume: 4 Issue: 2. https://ajindex.com/articles/1620800

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (20)

  1. AKWA, J. V., Silva Júnior, G. A., & Petry, A. P. (2012). Discussion on the verification of the overlap ratio influence on performance coefficients of a Savonius wind rotor using computational fluid dynamics. Renewable Energy, 38(1), 141149.
  2. ANSYS FLUENT. (2022). Documentation Manual. ANSYS FLUENT 2022 R1.
  3. Barros, A. S. de, Fragassa, C., Paiva, M. da S., Rocha, L. A. O., Machado, B. N., Isoldi, L. A., Gomes, M. das N., & Santos, E. D. dos. (2023). Numerical study and geometrical investigation of an onshore overtopping device wave energy converter with a seabed coupled structure. Journal of Marine Science and Engineering, 11(2), Article 412.
  4. Blackwell, B. F., Sheldahl, R. E., & Feltz, L. V. (1977). Wind tunnel performance data for two-and three-buckets savonius rotors (final report SAND76-0131). Sandia Laboratories.
  5. Chakrabarti, S. K. (2005). Handbook of offshore engineering. Elsevier.
  6. Gomes, M. N., Isoldi, L. A., Santos, E. D., & Rocha, L. A. O. (2012). Análise de Malhas para Geração Numérica de Ondas em Tanques. In VII Congresso Nacional de Engenharia Mecânica – CONEM, São Luís, Maranhão, Brasil.
  7. Goulart, M. M., Martins, J. C., Acunha Júnior, I. C., Gomes, M. N., Souza, J. A., Rocha, L. A. O., Isoldi, L. A., & Santos, E. D. (2015). Constructal design of an onshore overtopping device in real scale for two different depths. Marine Systems & Ocean Technology, 10 120129.
  8. Hirt, C. W., & Nichols, B. D. (1981). Volume of fluid (VOF) method for the dynamics of free boundaries. Journal of Computational Physics, 39(1), 201–225.
  9. Horko, M. (2007). CFD Optimisation of an oscillating water column energy converter [Master’s thesis]. School of Mechanical Engineering, The University of Western Australia.
  10. Jenniches, S. (2018). Assessing the regional economic impacts of renewable energy sources – a literature review. Renewable and Sustainable Energy Reviews, 93, 35–51.
  11. Martins, J. C., Fragassa, C., Goulart, M. M., Santos, E. D. dos, Isoldi, L. A., Gomes, M. das N., & Rocha, L. A. O. (2022). Constructal design of an overtopping wave energy converter incorporated in a breakwater. Journal of Marine Science and Engineering, 10(4), Article 471.
  12. Menter, F. R. (1993). Zonal two equation k–ω turbulence models for aerodynamic flows. In Proceedings of the AIAA 24th Fluid Dynamics Conference, 6–9. Orlando, FL, USA.
  13. Menter, F. R., Kuntz, M., & Langtry, R. (2003). Ten Years of Industrial Experience with the SST Turbulence Model. In K. Hanjali´c, Y. Nagano, & M. Tummers (Eds.), Turbulence, Heat and Mass Transfer, 4, 625–632.
  14. Santos, A. L. G., Fragassa, C., Santos, A. L. G., Vieira, R. S., Rocha, L. A. O., Conde, J. M. P., Isoldi, L. A., & dos Santos, E. D. (2022). Development of a computational model for investigation of an oscillating water column device with a savonius turbine. Journal of Marine Science and Engineering, 10(1), Article 79.
  15. Santos, A. L. G. (2023). Modelagem numérica e método design construtal para avaliação geométrica de um dispositivo do tipo coluna de água oscilante considerando a inserção de uma turbina Savonius (Tese de Doutorado). Universidade Federal do Rio Grande, Rio Grande, Brasil.
  16. Santos, A. L. G., Petry, A. P., Isoldi, L. A., Dias, G. C., Souza, J. A., & dos Santos, E. D. (2023). Development of a computational model for the simulation of an oscillating water column wave energy converter considering a savonius turbine. Defect and Diffusion Forum, 427, 95106.
  17. Seibt, F., De, Camargo, Dos, Santos, Das, Neves, Rocha, L. A. O., Isoldi, L., & Fragassa, C. (2019). Numerical evaluation on the efficiency of the submerged horizontal plate type wave energy converter. FME Transactions, 47(3), 543551.
  18. Temiz, I., Ekweoba, C., Thomas, S., Kramer, M., & Savin, A. (2021). Wave absorber ballast optimization based on the analytical model for a pitching wave energy converter. Ocean Engineering, 240, Article 109906.
  19. Versteeg, H. K., & Malalasekera, W. (2007). An Introduction to Computational Fluid Dynamics: The Finite Volume Method (2nd ed.). Pearson Education.
  20. Wilcox, D. C. (2006). Turbulence Modeling for CFD (3rd ed.). DWC Industries.