Karakteristik aerodinamis turbin hidrokinetik Savonius dengan dua semicircular blade-rounded leading edge

K. Rozi; T.K.B. Fajar; A.Z. Farras

doi:10.29303/dtm.v12i2.522

Karakteristik aerodinamis turbin hidrokinetik Savonius dengan dua semicircular blade-rounded leading edge

K. Rozi, T.K.B. Fajar, A.Z. Farras

Abstract

This numerical work was carried out to investigate the flow field characteristics through Savonius hydeokinetic turbine with 2 smicircular blade-rounded leading edge. The effects of blade thickness, and freestream velocity were simulated using ANSYS FLUENT with k-SST model. The results show that the structure of the flow changes with increasing turbine rotation. The coefficient of torque and power for thin blades is higher than for thicker turbine blades and its values increase with the increase in the freestream velocity. The turbin wirh thin blade thickness better than with thick blade thickness.

Keywords

Blade thickness;Rounded leading edge;Semicircular blade;Savonius hydrokinetic turbine

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References

Akwa, J. V., Alves, G., Petry, A. P., 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, 2012.

Alom, N., Saha, U. K., Influence of blade profiles on Savonius rotor performance: Numerical simulation and experimental validation, Energy Conversion and Management, 186, 267–277, 2019.

Badrul, M., Kamaruddin, N. M., Mohamed-Kassim, Z., Savonius hydrokinetic turbines for a sustainable river-based energy extraction: A review of the technology and potential applications in Malaysia, Sustainable Energy Technologies and Assessments, 36, 2019.

Eshagh, M., Fatahian, H., Fatahian, E., Performance improvement of a Savonius vertical axis wind turbine using a porous deflector, Energy Conversion and Management, 220, 2020.

Ferreira, C. J. S., Van Zuijlen, A., Bijl, H., Van Bussel, G., Van Kuik, G., Simulating dynamic stall in a two-dimensional vertical-axis wind turbine: Veriﬁcation and validation with particle image velocimetry data, Wind Energy, 13(May 2009), 1–17, 2010.

Frikha, S., Driss, Z., Ayadi, E., Masmoudi, Z., Abid, M. S., Numerical and experimental characterization of multi-stage Savonius rotors, Energy, 114, 382–404, 2016.

Guo, F., Song, B., Mao, Z., Tian, W., Experimental and numerical validation of the influence on Savonius turbine caused by rear deflector, Energy, 196, 2020.

Hadi, M., Experimental comparison study for Savonius wind turbine of two and three blades at low wind speed, International Journal of Modern Engineering Research, 3, 2978–2986, 2013.

Hassan, H. A., Nagib E, A. M., Kassab, S. Z., “Numerical study of improving Savonius turbine power coefficient by various blade shapes, Alexandria Engineering Journal, 58(2), 429–441, 2019.

Kacprzak, K., Liskiewicz, G., Sobczak, K., “Numerical investigation of conventional and modified Savonius wind turbines, Renew. Energy, vol. 60, 2013.

Kerikous, E., Thevenin, D., Optimal shape of thick blades for a hydraulic Savonius turbine, Renewable Energy, 134, 629–638. 2019.

Kumar, A., Saini, R. P., Saini, G., Dwivedi, G., Effect of number of stages on the performance characteristics of modified Savonius hydrokinetic turbine, Ocean Engineering, 217, 2020.

Layeghmand, K., Ghiasi Tabari, N., Zarkesh, M., Improving efficiency of Savonius wind turbine by means of an airfoil-shaped deflector, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 42(10), 1–12. 2020.

Mahmoud, N. H., El-Haroun, A. A., Wahba, E., Nasef, M. H., An experimental study on improvement of Savonius rotor performance, Alexandria Engineering Journal, 51(1), 19–25. 2012.

Mahrous, A. F., Computational fluid dynamics study of a modified Savonius rotor blade by universal consideration of blade shape factor concept, Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 85(1), 22–39. 2021.

Menter, F. R., Two-equation eddy-viscosity turbulence models for engineering applications, AIAA Journal, Vol. 32, No. 8, pp. 1598–1605, 1994.

Meri, S., Absi, A., Hasan, A., Oudah, S., Al-Rawi, B. A., Thajeel, S., Attabi, A., An experimental test of the performance enhancement of a Savonius turbine by modifying the inner surface of a blade, Materials Today: Proceedings, 42, 2233–2240. 2021.

Patel, V., Patel, R., Energy extraction using modified Savonius rotor from Free-flowing water, Materi-als Today: Proceedings, 2021.

Saad, A. S., Elwardany, A., El-Sharkawy, I. I., Ookawara, S., Ahmed, M., Performance evaluation of a novel vertical axis wind turbine using twisted blades in multi-stage Savonius rotors, Energy Conversion and Management, 235, 2021.

Saeed, H. A. H., Elmekawy, A. M. N., Kassab, S. Z., Numerical study of improving Savonius turbine power coeﬃcient by various blade shapes, Alexandria Engineering Journal 58, 429–441, 2019.

Saha, U. K., Thotla, S., Maity, D., Optimum design configuration of Savonius rotor through wind tunnel experiments, Journal of Wind Engineering 96, 1359–1375. 2008.

Sampath, S. S., Shetty, S., Chithirai Pon Selvan, M., Estimation of power in low velocity vertical axis wind turbine. Frontiers of Mechanical Engineering, 10(2), 211–218. 2015.

Shaheen, M., El-Sayed, M., Abdallah, S., Numerical study of two-bucket Savonius wind turbine cluster, Journal of Wind Engineering and Industrial Aerodynamics, 137, 78–89. 2015.

Sharma, K. K., Gupta, R., Biswas, A., Performance measurement of a two-stage two-bladed savonius rotor, International Journal of Renewable Energy Research, 4(1), 115–121. 2014.

Shashikumar, C. M., Vijaykumar, H., Vasudeva, M., Numerical investigation of conventional and tapered Savonius hydrokinetic turbines for low-velocity hydropower application in an irrigation channel, Sustainable Energy Technologies and Assessments, 43, 2021.

Talukdar, P. K., Sardar, A., Kulkarni, V., Saha, U. K., Parametric analysis of model Savonius hydrokinetic turbines through experimental and computational investigations, Energy Convers Manag.158, 36–49, 2018.

Tian, W., Song, B., Vanzwieten, J.H., Pyakurel, P., Computational fluid dynamics prediction of a modified Savonius wind turbine with novel blade shapes, Energies, vol. 8, no. 8, pp 7915–29, 2015.

DOI: https://doi.org/10.29303/dtm.v12i2.522