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Experimental and Numerical Study of Installed Circular and I-65° Type Cylinders Toward Returning-Blade Savonius Turbine for Augmented Aerodynamic Performance


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DOI: https://doi.org/10.15866/ireme.v17i3.22914

Abstract


In this essential investigation, the center point returning turbine blade of a Savonius has been positioned in a staggered alignment with a cylinder type I-65°. The conventional circular cylinder has been cut at an angle of 65° on both sides. This kind of cylinder, known as a cylinder, I-65° type, is made to reduce the aerodynamic drag force on the returning blade. The investigation has been performed under two scenarios, conventional and tandem turbine with installing a Cylinder I-65°. The staggered angle has been set within -20°≤α≤90° relative to the center point of the returning turbine blade. Experimental and numerical approaches based on those scenarios have examined the wind turbine performance. Based on a wind speed (U∞) of 5 m/s, the study has used a width L=2D-b, where D refers to the turbine blade outside diameter, and b is the turbine e-gap. The 0.5D-diameter cylinder I-65° type is positioned 1.4D upstream of the returning turbine blade. In the CFD study, a 2D numerical computation has been iterated by using ANSYS Fluent® 19.1 in order to investigate the Savonius turbine flow. The experiment results indicate that positioning Cylinder I-65° upstream of the returning blade can raise the Savonius turbine power. Furthermore, adding a Cylinder I-65° has enhanced the maximum Cp of the Savonius turbines by about 12%. The peak CP is obtained at a tips-speed ratio λ=0.8 and staggered angle α=0°. Numerical analysis has been carried out to analyze the airflow phenomenon around the turbine more deeply, and the results have showed good agreement to reveal and strengthen experimental quantitative data.
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Keywords


Savonius Turbine; Cylinder I-65° Type; Returning Blade; Coefficient of Power; Coefficient of Moment

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References


Satrio, D., Adityaputra, K., Suntoyo, S., Silvianita, S., Dhanistha, W., Gunawan, T., Muharja, M., Felayati, F., The Influence of Deflector on the Performance of Cross-Flow Savonius Turbine, (2023) International Review on Modelling and Simulations (IREMOS), 16 (1), pp. 27-34.
https://doi.org/10.15866/iremos.v16i1.22763

Oyewola, O., Aogo, O., Ajide, O., Numerical Modelling and Characterisation of Hydrofoils for the Hybrid of Savonius and Darrieus Hydrokinetic Turbine, (2022) International Review of Mechanical Engineering (IREME), 16 (7), pp. 345-357.
https://doi.org/10.15866/ireme.v16i7.22594

G. Sakti, T. Yuwono, and W. Widodo, Experimental and Numerical Investigation of I65° Type Cylinder Effect on the Savonius Wind Turbine Performance, International Journal of Mechanical & Mechatronics Engineering, vol. 19, pp. 115-125, Jun. 2019.

G. Sakti and T. Yuwono, Numerical and Experimental Investigation of The Effect of a Circular Cylinder as Passive Control On The Savonius Wind Turbine Performance, Journal of Southwest Jiaotong University, vol. 56, no. 6, pp. 73-93, Dec. 2021.
https://doi.org/10.35741/issn.0258-2724.56.6.7

Y. Triyogi, D. Suprayogi, and E. Spirda, Reducing the drag on a circular cylinder by upstream installation of an I-type bluff body as passive control, Proc Inst Mech Eng C J Mech Eng Sci, vol. 223, no. 10, pp. 2291-2296, Oct. 2009.
https://doi.org/10.1243/09544062JMES1543

T. Igarashi and Y. Shiba, Drag Reduction for D-Shape and I-Shape Cylinders (Aerodynamic Mechanism of Reduction of Drag), JSME International Journal Series B, vol. 49, no. 4, pp. 1036-1042, 2006.
https://doi.org/10.1299/jsmeb.49.1036

S. Aiba and H. Watanabe, Flow Characteristics of a Bluff Body Cut From a Circular Cylinder, J Fluids Eng, vol. 119, no. 2, pp. 453-454, Jun. 1997.
https://doi.org/10.1115/1.2819155

T. Tsutsui and T. Igarashi, Drag reduction of a circular cylinder in an air-stream, Journal of Wind Engineering and Industrial Aerodynamics, vol. 90, no. 4-5, pp. 527-541, May 2002.
https://doi.org/10.1016/S0167-6105(01)00199-4

S.-J. Lee, S.-I. Lee, and C.-W. Park, Reducing the drag on a circular cylinder by the upstream installation of a small control rod, Fluid Dyn Res, vol. 34, no. 4, Apr. 2004.
https://doi.org/10.1016/j.fluiddyn.2004.01.001

M. H. Mohamed, G. Janiga, E. Pap, and D. Thévenin, Optimal blade shape of a modified Savonius turbine using an obstacle shielding the returning blade, Energy Convers Manag, vol. 52, no. 1, pp. 236-242, 2011.
https://doi.org/10.1016/j.enconman.2010.06.070

M. H. Mohamed, G. Janiga, E. Pap, and D. Thèvenin, Optimization of Savonius turbines using an obstacle shielding the returning blade, Renew energy, vol. 35, no. 11, pp. 2618-2626, 2010.
https://doi.org/10.1016/j.renene.2010.04.007

N. H. Mahmoud, A. A. El-Haroun, E. Wahba, and M. H. Nasef, An experimental study on improvement of Savonius rotor performance, Alexandria Engineering Journal, vol. 51, no. 1, Mar. 2012.
https://doi.org/10.1016/j.aej.2012.07.003

T. Yuwono et al., Numerical study on the effect of the width of a single curtain on the performance of Savonius wind turbine, MATEC Web of Conferences, vol. 154, p. 01110, Feb. 2018.
https://doi.org/10.1051/matecconf/201815401110

T. Yuwono et al., The effect of the width of a single curtain on the performance of Savonius wind turbine, AIP Conference Proceedings 1983, 020023 (2018).
https://doi.org/10.1063/1.5046219

W. Tian, B. Song, J. H. van Zwieten, and P. Pyakurel, Computational fluid dynamics prediction of a modified Savonius wind turbine with novel blade shapes, Energies (Basel), vol. 8, no. 8, pp. 7915-7929, 2015.
https://doi.org/10.3390/en8087915

S. Pankade and A. Kadam, A Review Study on Savonius Wind Rotors for Accessing the Power Performance, IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE), Jan. 2013.

J. V. Akwa, H. A. Vielmo, and A. P. Petry, A review on the performance of Savonius wind turbines, Renewable and Sustainable Energy Reviews, vol. 16, no. 5, pp. 3054-3064, Jun. 2012.
https://doi.org/10.1016/j.rser.2012.02.056

Erwin, W. N. Hidayat, and S. Wiyono, Low Wind Speed Wind Tunnel Performance Test: Uniformity Wind Speed in Test Section, Proceedings of the Conference on Broad Exposure to Science and Technology 2021 (BEST 2021).
https://doi.org/10.2991/aer.k.220131.069

J. W. Dally, Statistical treatment of experimental data, Exp Mech, vol. 19, no. 11, pp. 421-428, Nov. 1979.
https://doi.org/10.1007/BF02324509

N. Alom, B. Borah, and U. K. Saha, An insight into the drag and lift characteristics of modified Bach and Benesh profiles of Savonius rotor, Energy Procedia, vol. 144, pp. 50-56, Jul. 2018.
https://doi.org/10.1016/j.egypro.2018.06.007

O. Yaakob, Y. Ahmed, and M. Ismail, Validation Study for Savonius Vertical Axis Marine Current Turbine Using CFD Simulation. 6th Asia-Pacific Workshop on Marine Hydrodynamics (APHydro), 2012.

A. R. Hassanzadeh, Comparison of conventional and helical Savonius marine current turbine using computational fluid dynamics, World Appl Sci J, vol. 28, no. 8, pp. 1113-1119, 2013.
https://doi.org/10.5829/idosi.wasj.2013.28.08.1385

J. V. Akwa, G. Alves da Silva Júnior, and A. P. Petry, Discussion on the verification of the overlap ratio influence on performance coefficients of a Savonius wind rotor using computational fluid dynamics, Renew energy, vol. 38, no. 1, pp. 141-149, Feb. 2012.
https://doi.org/10.1016/j.renene.2011.07.013

H. A. Hassan Saeed, A. M. Nagib Elmekawy, and S. Z. Kassab, Numerical study of improving Savonius turbine power coefficient by various blade shapes, Alexandria Engineering Journal, vol. 58, no. 2, pp. 429-441, Jun. 2019.
https://doi.org/10.1016/j.aej.2019.03.005

M. H. Nasef, W. A. El-Askary, A. A. AbdEL-hamid, and H. E. Gad, Evaluation of Savonius rotor performance: Static and dynamic studies, Journal of Wind Engineering and Industrial Aerodynamics, vol. 123, pp. 1-11, Dec. 2013.
https://doi.org/10.1016/j.jweia.2013.09.009

T. Hayashi, Y. Li, and Y. Hara, Wind Tunnel Tests on a Different Phase Three-Stage Savonius Rotor, JSME International Journal Series B, vol. 48, no. 1, pp. 9-16, 2005.
https://doi.org/10.1299/jsmeb.48.9

M. Al-Ghriybah, M. F. Zulkafli, D. H. Didane, and S. Mohd, The effect of inner blade position on the performance of the Savonius rotor, Sustainable Energy Technologies and Assessments, vol. 36, p. 100534, Dec. 2019.
https://doi.org/10.1016/j.seta.2019.100534

Y. Zhang, C. Kang, Y. Ji, and Q. Li, Experimental and numerical investigation of flow patterns and performance of a modified Savonius hydrokinetic rotor, Renew energy, vol. 141, pp. 1067-1079, Oct. 2019.
https://doi.org/10.1016/j.renene.2019.04.071

R. Gupta and A. Biswas, Computational fluid dynamics analysis of a twisted three-bladed H-Darrieus rotor, Journal of Renewable and Sustainable Energy, vol. 2, no. 4, p. 043111, Jul. 2010.
https://doi.org/10.1063/1.3483487

G. Ferrari, D. Federici, P. Schito, F. Inzoli, and R. Mereu, CFD study of Savonius wind turbine: 3D model validation and parametric analysis, Renew Energy, vol. 105, pp. 722-734, May 2017.
https://doi.org/10.1016/j.renene.2016.12.077

D. M. Prabowoputra, A. R. Prabowo, S. Hadi, and J. M. Sohn, Assessment of turbine stages and blade numbers on modified 3D Savonius hydrokinetic turbine performance using CFD analysis, Multidiscipline Modeling in Materials and Structures, vol. 17, no. 1, pp. 253-272, Jun. 2020.
https://doi.org/10.1108/MMMS-12-2019-0224

Y. Ahmed, R. Hassanzadeh, O. Yaakob, and M. Ismail, Comparison of Conventional and Helical Savonius Marine Current Turbine Using Computational Fluid Dynamics, World Appl Sci J, vol. 28, pp. 1113-1119, Jan. 2013.

P. A. Setiawan, T. Yuwono, and W. A. Widodo, Numerical simulation on the improvement of a Savonius vertical axis water turbine performance to advancing blade side with a circular cylinder diameter variation, IOP Conf Ser Earth Environ Sci, vol. 200, p. 012029, Nov. 2018.
https://doi.org/10.1088/1755-1315/200/1/012029

L. B. Kothe, S. V. Möller, and A. P. Petry, Numerical and experimental study of a helical Savonius wind turbine and a comparison with a two-stage Savonius turbine, Renew energy, vol. 148, pp. 627-638, Apr. 2020.
https://doi.org/10.1016/j.renene.2019.10.151

S. Mauro, S. Brusca, R. Lanzafame, and M. Messina, CFD modeling of a ducted Savonius wind turbine for the evaluation of the blockage effects on rotor performance, Renew energy, vol. 141, pp. 28-39, Oct. 2019.
https://doi.org/10.1016/j.renene.2019.03.125

N. K. Sarma, A. Biswas, and R. D. Misra, Experimental and computational evaluation of Savonius hydrokinetic turbine for low-velocity condition with comparison to Savonius wind turbine at the same input power, Energy Convers Manag, vol. 83, pp. 88-98, Jul. 2014.
https://doi.org/10.1016/j.enconman.2014.03.070

T. Yuwono, G. Sakti, F. Nur Aulia, and A. Chandra Wijaya, Improving the performance of Savonius wind turbine by the installation of a circular cylinder upstream of returning turbine blade: Improving the Performance of Savonius Wind Turbine, Alexandria Engineering Journal, vol. 59, no. 6, pp. 4923-4932, 2020.
https://doi.org/10.1016/j.aej.2020.09.009

Y. and O. s Munson, Fundamentals of Fluid Mechanics, vol. 6, pp. 490-491, 1976.

Philip J. Pritchard, Fox and McDonald's Introduction to Fluid, vol. 8, pp. 40-41, Oct. 2011.

Adanta, D., Sahim, K., Mohruni, A., Feasibility Study of PVC Pipes as Vertical Axis Wind Turbines Type Savonius Bucket for Remote Areas Application, (2021) International Journal on Energy Conversion (IRECON), 9 (2), pp. 41-47.
https://doi.org/10.15866/irecon.v9i2.19270

Ismail, I., Pane, E., Haryanto, G., Okviyanto, T., Rahman, R., A Better Approach for Modified Bach-Type Savonius Turbine Optimization, (2021) International Review of Aerospace Engineering (IREASE), 14 (3), pp. 159-165.
https://doi.org/10.15866/irease.v14i3.20612


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