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Study of Multiple Half Blades Effect on the Performance of Savonius Rotor:Experimental Study and Artificial Neural Network (ANN) Model


Affiliations
1 Department of Aeronautical Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), 86400 Parit Raja, Batu Pahat, Johor, Malaysia
2 Department of Mechanical Engineering, Near East University, Nicosia-99138, Cyprus
 

Objectives: To estimate and compare the performance in terms of torque and mechanical power of a new configuration of Savonius rotors with the conventional one. Methods/Statistical Analysis: New configuration comprises multiple half blades added to conventional configuration. Two different new configurations with different half blade geometries and locations were designed. The torque and mechanical power of the rotor was measured experimentally at various wind speeds and rotor positions. The tests were done 4-6 times for each measurement and the results were averaged. Moreover, the measured data were predicted using Artificial Neural Network (ANN). Findings: The location of half blades effect the performance of the rotor. Additionally, both new configurations of Savonius rotors are associated with above 45% increase in mechanical power compared to the conventional Savonius wind turbine. Based on the simulated results, it is found that the R2 value within a range of 0.902-0.99, which indicated a very good fit of the measured data with the calculated data. Application/Improvements: ANN technique can be applied as a powerful tool and effective way in predicting and assessing the performance of the rotor (torque and mechanical power).
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  • Marinic-Kragic I, Vucina D, Milas Z. Numerical workflow for 3D shape optimization and synthesis of vertical-axis wind turbines for specified operating regimes. Renewable Energy. 2018; 115:113-27. https://doi.org/10.1016/j.renene.2017.08.030
  • Mercado-Colmenero JM, Rubio-Paramio MA, GuerreroVillar F, Martin-Do-ate C. A numerical and experimental study of a new Savonius wind rotor adaptation based on product design requirements. Energy Conversion and Management. 2018:210-34. https://doi.org/10.1016/j.enconman.2017.12.058
  • Ushiyama I, Nagai H, Shinoda, J. Experimentally determining the optimum design configuration for savonius rotors. Bulletin of JSME. 2008:1359-75.
  • Altan BD, Atılgan M, Ozdamar A. An experimental study on improvement of a Savonius rotor performance with curtaining. Experimental Thermal and Fluid Science. 2008; 32(8):1673-8. https://doi.org/10.1016/j.expthermflusci.2008.06.006
  • Mahmoud N, El-Haroun A, Wahba E, Nasef M. An experimental study on improvement of Savonius rotor performance. Alexandria Engineering Journal. 2012; 51(1):19-25. https://doi.org/10.1016/j.aej.2012.07.003
  • Tartuferi M, D’Alessandro V, Montelpare S, Ricci R. Enhancement of Savonius wind rotor aerodynamic performance: a computational study of new blade shapes and curtain systems. Energy. 2015, 79, pp. 371-384. https://doi.org/10.1016/j.energy.2014.11.023
  • Montelpare S, D’Alessandro V, Zoppi A, Ricci R. Experimental study on a modified Savonius wind rotor for street lighting systems: Analysis of external appendages and elements. Energy. 2018; 144:146-58. https://doi.org/10.1016/j.energy.2017.12.017
  • Saha U, Rajkumar MJ. On the performance analysis of Savonius rotor with twisted blades. Renewable Energy. 2006; 31(11):1776-88. https://doi.org/10.1016/j.renene.2005.08.030
  • Roy S, Saha UK. Wind tunnel experiments of a newly developed two-bladed Savonius-style wind turbine. Applied Energy. 2015; 137:117-25. https://doi.org/10.1016/j.apenergy.2014.10.022
  • Kamoji M, Kedare S, Prabhu S. Performance tests on helical Savonius rotors. Renewable Energy. 2009; 34(3):521-9. https://doi.org/10.1016/j.renene.2008.06.002
  • Mao Z, Tian W. Effect of the blade arc angle on the performance of a Savonius wind turbine. Advances in Mechanical Engineering. 2018; 7(5):148-57.
  • Damak A, Driss Z, Abid, M. Experimental investigation of helical Savonius rotor with a twist of 180°. Renewable Energy. 2013; 52:136-42. https://doi.org/10.1016/j.renene.2012.10.043
  • Sharma S, Sharma RK. Performance improvement of Savonius rotor using multiple quarter blades – A CFD investigation. Energy Conversion and Management. 2016; 127:43-54. https://doi.org/10.1016/j.enconman.2016.08.087
  • Kamoji MA, Kedare SB, Prabhub SV. Experimental investigations on single stage modified Savonius rotor. Applied Energy. 2009; 86(7-8):1064-73. https://doi.org/10.1016/j.apenergy.2008.09.019
  • Mahmoud N, El-Haroun A, Wahba E, Nasef M. An experimental study on improvement of Savonius rotor performance. Alexandria Engineering Journal. 2012; 51(1):19-25. https://doi.org/10.1016/j.aej.2012.07.003
  • Sargolzaei J, Kianifar A. Modeling and simulation of wind turbine Savonius rotors using artificial neural networks for estimation of the power ratio and torque. Simulation Modelling Practice and Theory. 2009; 17(7):1290-8. https://doi.org/10.1016/j.simpat.2009.05.003

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  • Study of Multiple Half Blades Effect on the Performance of Savonius Rotor:Experimental Study and Artificial Neural Network (ANN) Model

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Authors

Mohanad Al-Ghriybah
Department of Aeronautical Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), 86400 Parit Raja, Batu Pahat, Johor, Malaysia
Hüseyin Çamur
Department of Mechanical Engineering, Near East University, Nicosia-99138, Cyprus
Mohd Fadhli Zulkafli
Department of Aeronautical Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), 86400 Parit Raja, Batu Pahat, Johor, Malaysia
Muhammad Abid Khan
Department of Mechanical Engineering, Near East University, Nicosia-99138, Cyprus
Youssef Kassem
Department of Mechanical Engineering, Near East University, Nicosia-99138, Cyprus
Engin Esenel
Department of Mechanical Engineering, Near East University, Nicosia-99138, Cyprus

Abstract


Objectives: To estimate and compare the performance in terms of torque and mechanical power of a new configuration of Savonius rotors with the conventional one. Methods/Statistical Analysis: New configuration comprises multiple half blades added to conventional configuration. Two different new configurations with different half blade geometries and locations were designed. The torque and mechanical power of the rotor was measured experimentally at various wind speeds and rotor positions. The tests were done 4-6 times for each measurement and the results were averaged. Moreover, the measured data were predicted using Artificial Neural Network (ANN). Findings: The location of half blades effect the performance of the rotor. Additionally, both new configurations of Savonius rotors are associated with above 45% increase in mechanical power compared to the conventional Savonius wind turbine. Based on the simulated results, it is found that the R2 value within a range of 0.902-0.99, which indicated a very good fit of the measured data with the calculated data. Application/Improvements: ANN technique can be applied as a powerful tool and effective way in predicting and assessing the performance of the rotor (torque and mechanical power).

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DOI: https://doi.org/10.17485/ijst%2F2018%2Fv11i38%2F129966