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Автор: Grafiati

Опубліковано: 11 вересня 2023

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1

Yudistira, Raditya, Dwi Anung Nindito, and Raden Haryo Saputra. "Uji Eksperimental Pengembangan Turbin Hidrokinetik Savonius Berdasarkan Bentuk Profil Distribusi Kecepatan Aliran." RekaRacana: Jurnal Teknil Sipil 7, no. 1 (July 21, 2021): 1. http://dx.doi.org/10.26760/rekaracana.v7i1.215.

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ABSTRAKTurbin Tornado Savonius terinspirasi dari bentuk pola distribusi kecepatan yang kecil pada bagian bawah blade turbin kemudian membesar pada bagian atas blade turbin, yang bertujuan memperbesar area bidang tangkap aliran pada bagian atas turbin. Uji eksperimental dilakukan pada saluran prismatik dan membandingkan kinerja antara turbin hidrokinetik Savonius dan turbin Tornado Savonius. Berdasarkan hasil uji eksperimen, turbin Tornado Savonius memiliki performa optimum pada saat kedalaman air di saluran sama dengan tinggi turbin yang diuji coba. Bentuk blade turbin hidrokinetik Tornado Savonius mampu memperbesar area bidang tangkap aliran yang mengenai turbin, sesuai dengan bentuk distribusi kecepatan aliran untuk kondisi kedalaman yang sama dengan tinggi turbin.Kata kunci: savonius, hidrokinetik, tornado savonius, distribusi kecepatan aliran. ABSTRACKTornado Savonius turbine inspired by velocity distribution pattern shape which small at the bottom and getting bigger the upper part of turbine blade. Such shape aims to enlarge the flow catchment area at the turbine’s upper part. Experimental test performed in prismatic channel by comparing the performance of Savonius hydrokinetic turbine and Tornado Savonius turbine. Based on the result of experimental test, Tornado Savonius turbine has optimum performance at the time of water depth in channel equal to height of the examined turbine. Blade shape of Tornado Savonius hydrokinetic turbine is able to enlarge the flow catchment area in accordance with flow speed distribution shape at the same depth as turbine height.Keywords: savonius, hydrokinetic, tornado savonius, flow velocity distribution.

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2

Ichsan, Nur, Dwi Anung Nindito, and Raden Haryo Saputra. "Uji Eksperimental Pengaruh Dimensi Lebar Rectifier Guide Vanes terhadap Kinerja Turbin Hidrokinetik Savonius." RekaRacana: Jurnal Teknil Sipil 7, no. 2 (September 27, 2021): 96. http://dx.doi.org/10.26760/rekaracana.v7i2.96.

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ABSTRAKKarakteristik blade sisi cekung turbin hidrokinetik Savonius yang memiliki nilai torsi negatif mengakibatkan kelemahan berupa efisiensi turbin yang relatif rendah, sehingga diperlukan sistem pengarah aliran berupa rectifier guide vane. Studi ini bertujuan membandingkan performa yang dihasilkan turbin Savonius tanpa guide vanes dan turbin Savonius menggunakan guide vanes dengan memvariasikan lebar rectifier L=Rt/4, L=Rt/2 dan L=3Rt/4, dimana Rt adalah jari-jari turbin. Metode pengujian dilakukan secara eksperimental di saluran prismatik dengan kecepatan aliran 0,111–0,1415 m/s. Hasil studi menunjukkan bahwa penambahan guide vanes dengan variasi lebar rectifier L=Rt/4, L=Rt/2 dan L=3Rt/4 masing-masing menghasilkan peningkatan torsi sebesar 29,9%; 33,3%; dan 36,3%. Turbin Savonius menggunakan guide vanes dengan lebar rectifier L=3Rt/4 menghasilkan coefficient of torque (Ct) dan coefficient of power (Cp) yang lebih tinggi dibandingkan variasi lebar rectifier (L) lainnya, sehingga kinerja turbin meningkat.Kata kunci: coefficient of power, hidrokinetik, savonius, rectifier guide vanes ABSTRACTThe characteristic of the concave side blade of the Savonius hydrokinetic turbine which has a negative torque value, it leads to the weakness in the form of a relatively low turbine efficiency, thus a flow steering system is needed in the form of a rectifier guide vane. The aim of this study was to compare the performance of the Savonius turbine without guide vanes and the Savonius turbine using guide vanes by varying the width of the rectifier L=Rt/4, L=Rt/2 dan L=3Rt/4, where Rt is the turbine radius. The test method was undertaken experimentally in a prismatic channel with a flow velocity of 0.111–0.1415 m/s. The results of the study pointed out that the addition of guide vanes with variations in the width of the rectifier was L=Rt/4, L=Rt/2 dan L=3Rt/4 and each of them had an increase in torque of 29.9%, 33.3% and 36.3%. The Savonius turbine used guide vanes with a rectifier width of L=3Rt/4 and it resulted a higher coefficient of torque (Ct) and coefficient of power (Cp) compared to other variations of rectifier width (L), thus, the performance of turbine increased.Keywords: coefficient of power, hydrokinetic, savonius, rectifier guide vanes

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3

Nurul Asyikin Abu Bakar, Muhd Syukri Mohd Shamsuddin, and Noorfazreena M. Kamaruddin. "Experimental Study of a Hybrid Turbine for Hydrokinetic Applications on Small Rivers in Malaysia." Journal of Advanced Research in Applied Sciences and Engineering Technology 28, no. 2 (October 17, 2022): 318–24. http://dx.doi.org/10.37934/araset.28.2.318324.

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Energy consumption has become a primary commodity due to technological revolutions in developing countries, such as the expansion of the hydrokinetic turbine as a renewable energy source to mitigate environmental issues. However, conventional vertical axis turbines in hydrokinetic applications particularly for small rivers with low speeds, have limited capabilities such as great power but poor self-start or vice versa. Therefore, the current study aims to address this issue by investigating a hybrid turbine through quantitative and qualitative wind tunnel experiments to improve the performance and self-start capability by integrating Savonius and Darrieus turbines. The findings discovered that the maximum torque coefficient of the hybrid turbine is 37% higher than that of a single conventional Savonius turbine. The integration of the hybrid turbine has resulted in a higher torque coefficient which has enhanced the self-start performance. The hybrid turbine achieved a maximum power output improvement of 30% at a low Reynolds number of 89500, typically representing the small river flow conditions. The presence of a substantial wake captured by the smoke generator at the rear part of the hybrid turbine signifies large drag resulting in power loss and a subsequent decrement in power output. The hybrid turbine has demonstrated its potential to be implemented in hydrokinetic applications in developing countries such as Malaysia for sustainable energy generation.

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4

Mosbahi, Mabrouk, Mariem Lajnef, Mouna Derbel, Bouzid Mosbahi, Costanza Aricò, Marco Sinagra, and Zied Driss. "Performance Improvement of a Drag Hydrokinetic Turbine." Water 13, no. 3 (January 23, 2021): 273. http://dx.doi.org/10.3390/w13030273.

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Hydropower is at present in many locations, among all the other possible renewable energy sources, the best one for net cost per unit power. In contrast to traditional installation, based on water storage in artificial basins, free flow river turbines also provide a very low environmental impact due to their negligible effect on solid transport. Among them, kinetic turbines with vertical axis are very inexpensive and have almost zero impact on fish and local fauna. In application to tidal waves and sea waves, where vertically averaged velocities have alternate direction, a Savonius rotor also has the advantage of being productive during the whole time cycle. In this work, the effect of an upstream deflector system mounted upstream of a twisted Savonius rotor inside a channel has been investigated through numerical simulations and experimental tests. Numerical simulations were carried on using the ANSYS FLUENT 17.0 software. Based on this numerical study, it is shown that the proposed deflector system has improved the power coefficient of the Savonius rotor by 14%. The utilization of this new design system is predicted to contribute towards a more efficient use of flows in rivers and channels for electricity production in rural areas.

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5

Noorfazreena Kamaruddin and Muhd Syukri Mohd Shamsuddin. "Experimental Investigation of the Power Storage System for Savonius Turbines in Wind and Water." Journal of Advanced Research in Applied Sciences and Engineering Technology 28, no. 3 (November 30, 2022): 235–47. http://dx.doi.org/10.37934/araset.28.3.235247.

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The Savonius turbine is practical in generating off-grid electrical power for hydrokinetic applications due to its simple design, particularly for small rivers in rural areas. However, despite many studies on methods to improve turbine performance, the electrical aspect of the turbine system is rarely discussed. Therefore, the present study aims to evaluate the performance of a simple and affordable power storage system using a conventional 2-bladed Savonius turbine. The experiment was conducted in a wind tunnel and a water channel with flow speeds of 6 m/s and 0.33 m/s, respectively, corresponding to a Reynolds number of 62700. A power coefficient of 0.09 was discovered for the wind experiment and 0.11 for the water. The total amount of energy extracted from the water was 60% less than from the wind due to the lower available power. It was observed that the tip speed ratio decreases over the charging period due to the constant current and voltage of the Lithium-Ion batteries. This will allow for a fluctuation in the amount of required current and consequently affect the torque needed to spin the generator. The findings confirmed the functionality of the electrical storage system and contributed to the low manufacturing and maintenance cost of the hydrokinetic turbines.

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6

Wijaya, Rudi Kusuma, and Iwan Kurniawan. "Study Experimental Darrieus Type-H Water Turbines Using NACA 2415 Standard Hydrofoil Blade." Jurnal Pendidikan Teknik Mesin Undiksha 9, no. 2 (August 31, 2021): 109–23. http://dx.doi.org/10.23887/jptm.v9i2.29257.

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Telah dilakukan kaji eksperimental turbin air Darrieus tipe-H menggunakan blade hydrofoil standar NACA 2415 untuk mengetahui nilai torsi statik dan dinamik yang dihasilkan turbin air Darrieus tipe-H 3 blade dan 6 blade, pengujian menggunakan water tunnel dimensi 6m x 0.6m x 1m. Variasi tiga blade dan enam blade, dengan diameter turbin 0.44 m x 0.15 m pada turbin luar dan 0.18 x 0.14 m pada turbin bagian dalam, panjang chord 0.10 m dengan variasi sudut serang 0º sampai dengan 360º, variasi kecepatan air pertama 0.3 m/s, variasi kecepatan aliran air kedua 0.65 m/s. Kecepatan air 0.3 m/s enam blade, torsi statik 0.3 Nm, torsi dinamik nya 0.384 Nm, kecepatan air 0,65 m/s torsi dinamik 0.432 Nm dan torsi statik nya 0.384 Nm, pengujian turbin Darrieus tiga blade kecepatan air 0,3 m/s nilai torsi dinamik 0.336 Nm dan dengan kecepatan yang sama torsi statik nya 0.264 Nm. Pada kecepatan air 0.65 m/s nilai torsi dinamik sebesar 0.384 Nm, dan nilai torsi statik 0.336 Nm. Dari data hasil pengukuran tersebut dapat disimpulkan bahwa variasi turbin enam blade memiliki nilai torsi statik dan torsi dinamik yang lebih tinggi dari pada turbin tiga blade, jumlah blade sangat berpengaruh terhadap daya serap energi kinetik air untuk di konversikan menjadi torsi statik maupun torsi dinamik.Kata kunci : Turbin Hydrokinetic, Darrieus, Torsi Statik,Torsi DinamikAn experimental study of the H-type Darrieus water turbine was carried out using a standard NACA 2415 hydrofoil blade to determine the value of static and dynamic torque generated by the 3-blade and 6-blade Darrieus H-type water turbine, testing using a water tunnel dimensions of 6m x 0.6m x 1m. Variation of three blades and six blades, with a turbine diameter of 0.44 mx 0.15 m on the outer turbine and 0.18 x 0.14 m on the inner turbine, chord length 0.10 m with variations in angle of attack 0º to 360º, variation of first water velocity 0.3 m / s second water flow velocity 0.65 m / s. Water velocity 0.3 m / s six blades, static torque 0.3 Nm, dynamic torque 0.384 Nm, water velocity 0.65 m / s dynamic torque 0.432 Nm and static torque 0.384 Nm, Darrieus three blade turbine test water speed 0.3 m / s dynamic torque value of 0.336 Nm and with the same speed its static torque is 0.264 Nm. At 0.65 m / s water velocity, the dynamic torque value is 0.384 Nm, and the static torque value is 0.336 Nm. From the measurement data, it can be concluded that the six-blade turbine variation has a higher value of static torque and dynamic torque than the three-blade turbine, the number of blades greatly influences the absorption of water kinetic energy to be converted into static torque and dynamic torque. Keywords: Hydrokinetic Turbine, Darrieus, static torque, dynamic torqueDAFTAR RUJUKANKirke, B.K. (2011). Tests on ducted and bare helical and straight blade Darrieus hydrokinetic turbines, 36, pp.3013-3022Dominy, R., Lunt, P., Bickerdyke A., Dominy, J. (2007). Self-starting capability of a Darrieus turbine. Proc Inst Mech Eng (IMechE) ePart A: J Power Energy ;221: 111-120Decoste, Josh. (2004). Self-Starting Darrieus Wind Turbine. Department of Mechanical Engineering, Dalhousie University.Febrianto, A., & Santoso, A. (2016). “Analisa Perbandingan Torsi Dan rpm Tipe Darrieus Terhadap Efisiensi Turbin”. Fakultas Teknologi Kelautan, Institut Teknologi Sepuluh Nopember (ITS)Febriyanto, N. (2014). “Studi Perbandingan Karakteristik Airfoil NACA 0012 Dengan NACA 2410 Terhadap Koefisien Lift dan Koefisien Drag Pada Berbagai Variasi Sudut Serang Dengan CFD” Fakultas teknik, Universitas Muhammadiyah SurakartaSaputra, G. (2016). Kaji Eksperimental Turbin Angin Darrieus-H Dengan Bilah Tipe NACA 2415. Universitas Riau, JOM Teknik Mesin vol. 3 No. 1.Hafied, B. (2018). Kaji Eksperimental Torsi Statik Dan Torsi Dinamik Hidrokinetik Turbin Savonius Single Stage Type Bach Tiga Sudu. Tugas Akhir Teknik Mesin. Fakultas Teknik Universitas Riau.Hau, E. (2005). Wind Turbines: Fundamentals, Technologies, Aplication, Economics. Springer. Berlin.Kaprawi. (2011), Pengaruh Geometri Blade Dari Turbin Air Darrieus Terhadap Kinerjany. Prosiding Seminar Nasional AVoER ke-3 PalembangKhan, M. J., Bhuyan, G., Iqbal M. T., & Quaicoe J.E. (2009). Hydrokinetic Energy Conversion Systems and Assessment of Horizontal and Vertical Axis Turbines for River and Tidal: Applications A Technology Status Review. Applied Energy, 86, 1823-1835.Lain, S., & Osario, C. (2010). Simulation and Evaluation of a Sraight Bladed Darrieus Type Cross Flow Marine Turbine. Journal of Scientific & Research, Vol. 69 p.906-912Marizka, L. D. (2010). Analisis Kinerja Turbin Hydrokinetic Poros Vertical Dengan Modifikasi Rotor Savonius L Untuk Optimasi Kinerja Turbin. Tugas Akhir Sains Fisika. FMIPA-Universitas Sebelas Maret.Malge, P. (2015).Analysis of Lift and Drag Forces at Different Azimuth Angle of Innovative Vertical Axis Wind Turbine.International Journal of Energy Engineering 4(5-8).Teja, P., D. (2017). Studi Numerik Turbin Angin Darrieus – Savonius Dengan Penambahan Stage Rotor Darrieus. Institut Teknologi Sepuluh Nopember, Surabaya.Zobaa, A. F., & Bansal, R. C. (2011). Handbook of Renewable Energy Technology. USA: World Scientific Publishing Co. Pte. Ltd.

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7

Handoko, R., S. Hadi, Danardono, Ubaidillah, and Z. Arifin. "Parameters of Savonius Type Hydrokinetic Turbine to Enhance Efficiency." IOP Conference Series: Materials Science and Engineering 1096, no. 1 (March 1, 2021): 012039. http://dx.doi.org/10.1088/1757-899x/1096/1/012039.

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8

Kumar, Anuj, and R. P. Saini. "Performance parameters of Savonius type hydrokinetic turbine – A Review." Renewable and Sustainable Energy Reviews 64 (October 2016): 289–310. http://dx.doi.org/10.1016/j.rser.2016.06.005.

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9

Saini, Gaurav, and Ashoke De. "ON THE SELF-STARTING COMPARATIVE PERFORMANCE EVALUATION OF DARRIEUS AND HYBRID HYDROKINETIC ROTOR." International Journal of Energy for a Clean Environment 24, no. 5 (2023): 67–91. http://dx.doi.org/10.1615/interjenercleanenv.v24.i5.50.

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Анотація:

Darrieus rotor is a promising technology for hydrokinetic and wind energy harvesting applications. However, the Darrieus rotor suffers from the problem of poor starting performance. The present research highlights solutions to improve the poor starting performance of the Darrieus rotor by introducing the hybrid rotor. Further, a comparative performance evaluation of conventional vertical axis Darrieus and hybrid rotors has been investigated numerically. The most widely used S-series S-1046 hydrofoil has been utilized by hybrid and Darrieus rotors. Further, two semicircular blades are used for the Savonius part of the hybrid rotor. The size of the Savonius part is optimized to obtain maximum performance from the hybrid rotor. Analyzing the flow field distributions across the turbine vicinity has highlighted various possible reasons. The study results have demonstrated that the hybrid rotor yields an exceptional increment of about 159.41% in the torque coefficient under low tip speed ratio (TSR) regimes (during initial starting) compared to the Darrieus rotor. However, due to the Savonius rotor's presence, the hybrid rotor's maximum power coefficient is reduced slightly compared to the maximum operating point of the Darrieus rotor. Further, the hybrid rotor yields a wider operating range than the single maximum operating point by the Darrieus rotor. The present investigations will assist the designers in selecting the site-specific hydrokinetic technology suitable for efficient and optimum use of hydrokinetic potential.

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10

Satrio, Dendy, Andreas Anthoni Wiyanto, and Mukhtasor M. "IN-SITU EXPERIMENT OF CROSS-FLOW SAVONIUS HYDROKINETIC TURBINE WITH A DEFLECTOR." Journal of Marine-Earth Science and Technology 3, no. 1 (June 8, 2022): 1–4. http://dx.doi.org/10.12962/j27745449.v3i1.438.

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The crossflow type Savonius turbine is capable to rotate at low current velocity conditions. The drawback of this turbine lies on its efficiency. This study aims to test its performance before implementation in the field. The research method used is an in-situ experimental study in Umbulan, Pasuruan. Turbine model T1 AR 1.145 without deflector is used, when TSR reaches a value of 0.824, it gets a CQ value of 0.327 and a CP value of 0.269. In the same model with deflector, when TSR reaches a value of 1.1, the CQ value is 0.251, and the CP value is 0.276. It can be concluded that this turbine is suitable for area with low current velocity.

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11

Patel, Ravi, and Vimal Patel. "Performance analysis of Savonius hydrokinetic turbine using ‘C’ shaped Deflector." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 44, no. 3 (July 18, 2022): 6618–31. http://dx.doi.org/10.1080/15567036.2022.2101718.

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12

Kumar, Anuj, and R. P. Saini. "Performance analysis of a Savonius hydrokinetic turbine having twisted blades." Renewable Energy 108 (August 2017): 502–22. http://dx.doi.org/10.1016/j.renene.2017.03.006.

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13

Muhd Syukri Mohd Shamsuddin, Nujjiya Abdul Mu’in, and Noorfazreena Mohammad Kamaruddin. "Experimental Investigation of the Savonius Turbine for Low-Speed Hydrokinetic Applications in Small Rivers." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 94, no. 2 (May 24, 2022): 29–46. http://dx.doi.org/10.37934/arfmts.94.2.2946.

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The current study aims to investigate the power performance of 2-bladed and 3-bladed Savonius turbine rotors in a water channel to simulate a low river flow speed. The results were compared to those obtained in a wind tunnel under the same dynamic flow conditions. The comparison was made to determine the turbine characteristics in terms of their power performance when operating in different fluid mediums. The Reynolds number was set to 90200 in both cases, corresponding to an equivalent water flow speed of 0.59 m/s and a wind speed of 10 m/s, respectively. The low water flow speed tested in the water channel represents a narrower and shallower river, commonly found in rural areas of developing countries. The maximum obtained in the water channel was 0.0070 for the 2-bladed rotor and 0.0053 for the 3-bladed rotor at λ = 0.16, respectively. The difference in maximum obtained in the water channel compared with the wind tunnel was 5.7% for the 2-bladed rotor and 22% for the 3-bladed rotor, respectively. Despite being tested in different fluid mediums, the turbines in this study performed similarly, with the 2-bladed rotor outperforming the 3-bladed rotor. The results show that the turbine’s performance is independent of fluid mediums, as both have demonstrated a similar trend. Therefore, the results for the turbine tested in wind or water medium should be applicable in both conditions and can be used in a practical application.

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14

Khani, Mohammad Sadegh, Younes Shahsavani, Mojtaba Mehraein, and Ozgur Kisi. "Performance evaluation of the savonius hydrokinetic turbine using soft computing techniques." Renewable Energy 215 (October 2023): 118906. http://dx.doi.org/10.1016/j.renene.2023.118906.

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15

Hashem, Islam, and Baoshan Zhu. "Metamodeling-based parametric optimization of a bio-inspired Savonius-type hydrokinetic turbine." Renewable Energy 180 (December 2021): 560–76. http://dx.doi.org/10.1016/j.renene.2021.08.087.

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16

Mosbahi, Mabrouk, Sana Elgasri, Mariem Lajnef, Bouzid Mosbahi, and Zied Driss. "Performance enhancement of a twisted Savonius hydrokinetic turbine with an upstream deflector." International Journal of Green Energy 18, no. 1 (September 29, 2020): 51–65. http://dx.doi.org/10.1080/15435075.2020.1825444.

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17

Anthony, Armand Z., and Sukanta Roy. "Performance analysis of a modified Savonius hydrokinetic turbine blade for rural application." IOP Conference Series: Materials Science and Engineering 943 (November 3, 2020): 012034. http://dx.doi.org/10.1088/1757-899x/943/1/012034.

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18

Alipour, Ramin, Roozbeh Alipour, Farhad Fardian, Seyed Saeid Rahimian Koloor, and Michal Petrů. "Performance improvement of a new proposed Savonius hydrokinetic turbine: a numerical investigation." Energy Reports 6 (November 2020): 3051–66. http://dx.doi.org/10.1016/j.egyr.2020.10.072.

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19

Maldar, Nauman Riyaz, Cheng Yee Ng, and Elif Oguz. "A review of the optimization studies for Savonius turbine considering hydrokinetic applications." Energy Conversion and Management 226 (December 2020): 113495. http://dx.doi.org/10.1016/j.enconman.2020.113495.

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20

Nikbakhsh, Amir Abbas, Mojtaba Mehraein, Maryam Karami, Mohammad Sadegh Khani, and Seyed Hossein Mohajeri. "Performance assessment of savonius hydrokinetic turbine in a sharp 90° channel bend." Energy for Sustainable Development 76 (October 2023): 101259. http://dx.doi.org/10.1016/j.esd.2023.101259.

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21

Wu, Kuo-Tsai, Kuo-Hao Lo, Ruey-Chy Kao, and Sheng-Jye Hwang. "Numerical and Experimental Investigation of the Effect of Design Parameters on Savonius-Type Hydrokinetic Turbine Performance." Energies 15, no. 5 (March 2, 2022): 1856. http://dx.doi.org/10.3390/en15051856.

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Анотація:

To meet the increased demand of hydroelectric power generation, a novel drag-based Savonius turbine with the characteristics of a simpler fabrication process and good starting characteristics is designed, fabricated, and analyzed. The newly designed turbine is suitable to be installed in rivers, irrigation channels, ocean currents, etc., for small-scale hydroelectric power generation. In the present study, experiments are carried out to investigate the influence of the design parameters of this turbine on its power performance in order to improve its efficiency, including blade arc angles (180°, 135°), blade placement angles (0°, ±22.5°), and the number of blades (2, 3, 6, and 8). Further, three-dimensional CFD simulations are performed with Re = 6.72×105, matching the experimental conditions, in order to study the changes in the flow field and the rotation characteristics of the turbine. The research results indicate that a six-bladed turbine with a blade arc angle of 135° and a blade placement angle of 0° has higher torque and better power performance, which makes it the most suitable design when also considering cost. Furthermore, it was found that an increase in the number of turbine blades contributes to improving the performance of the turbine. The maximum power coefficient is 0.099 at a tip speed ratio of 0.34.

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22

Rengma, Thochi Seb, and P. M. V. Subbarao. "Optimization of semicircular blade profile of Savonius hydrokinetic turbine using artificial neural network." Renewable Energy 200 (November 2022): 658–73. http://dx.doi.org/10.1016/j.renene.2022.10.021.

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23

Li, Fengshen, Jianjun Yao, Junhua Chen, Heng Jin, and Zheng Yuan. "Performance analysis of Savonius hydrokinetic turbine capturing wave energy under different operating strategies." Energy Conversion and Management 251 (January 2022): 115006. http://dx.doi.org/10.1016/j.enconman.2021.115006.

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24

Jeeva, B., S. Jai Sandeep, N. Ramsundram, M. Prasanth, and B. Praveen. "Experimental Investigation of Three Bladed Inclined Savonius Hydrokinetic Turbine by using Deflector Plate." IOP Conference Series: Materials Science and Engineering 1146, no. 1 (May 1, 2021): 012009. http://dx.doi.org/10.1088/1757-899x/1146/1/012009.

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25

Kumar, Anuj, and R. P. Saini. "Performance analysis of a single stage modified Savonius hydrokinetic turbine having twisted blades." Renewable Energy 113 (December 2017): 461–78. http://dx.doi.org/10.1016/j.renene.2017.06.020.

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26

Rengma, Thochi Seb, Mahendra Kumar Gupta, and P. M. V. Subbarao. "A novel method of optimizing the Savonius hydrokinetic turbine blades using Bezier curve." Renewable Energy 216 (November 2023): 119091. http://dx.doi.org/10.1016/j.renene.2023.119091.

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27

Sarma, N. K., 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 Conversion and Management 83 (July 2014): 88–98. http://dx.doi.org/10.1016/j.enconman.2014.03.070.

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28

Kerishmaa Theavy Kunalan, Cheng Yee Ng, and Nauman Riyaz Maldar. "A performance investigation of a multi-staging hydrokinetic turbine for river flow." Progress in Energy and Environment 17, no. 1 (January 2, 2022): 17–31. http://dx.doi.org/10.37934/progee.17.1.1731.

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Анотація:

Our world has been relying on fossil fuel, a non-renewable energy that is depleting day by day and negatively impacting the environment. Hydropower is known to contribute a significant portion of the renewable power production. Dams has been the most common technique to generate hydropower. However, such scheme was not able to support the rural areas as it requires large areas and huge amount of water resource. Savonius hydrokinetic turbine (HKT) has been suggested as the device for a small-scale application as it can generate power from low-velocity river flow with less installation cost. With that, the aim of this study is designed to investigate and compare performance of the single-staged and two-staged HKT for river flow. This study considered numerical simulation that includes modelling, testing, and analyzing the data. Then, comparing it with the existing literature results, to identify the solution. This investigation demonstrates an improvement of 8.1% in the efficiency of power coefficient when compared with single-staged HKT.

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29

Prabowoputra, Dandun Mahesa, Aditya Rio Prabowo, Syamsul Hadi, and Jung Min Sohn. "Assessment of turbine stages and blade numbers on modified 3D Savonius hydrokinetic turbine performance using CFD analysis." Multidiscipline Modeling in Materials and Structures 17, no. 1 (June 14, 2020): 253–72. http://dx.doi.org/10.1108/mmms-12-2019-0224.

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Анотація:

PurposeIn Southeast Asia, the renewable energy produced from hydropower systems has significant potential. Therefore, adequate development is needed to prevent future energy-related crises. This study, therefore, aims to determine the variations effects in geometry and the geometrical factors on turbine performance.Design/methodology/approachThe developed aspects are selected to determine the blade shape, its number and multistage requirements. The study was conducted in 3D simulation, with Ansys software used to calculate a series of computational fluid dynamic problems. The aspect ratio applied in this study utilized the ratio of the overall diameter of the rotor height (D / H), which is 1.FindingsThe results showed that the highest Cp-max value, number of blades and stages were 0.2, two and three, respectively. Furthermore, these attributes combined to improve the performance of hydroturbines.Research limitations/implicationsThe research was fully conducted using numerical simulation, which requires sustainable research in the form of laboratory experiments. Also, pioneer experiments were conducted using benchmarking to ensure the results obtained are reliable.Practical implicationsHydropower is one of the best renewable energy sources in Indonesia with a large potential in the archipelago and tropical countries due to rivers and various water sources. The current generated is a useful reference for Savonius design.Originality/valueThe originality of this study is to examine the three aspects of the geometry of the rotor, such as the number and shape of blades, as well as the stages in the same boundary conditions. Therefore, the comparison of the effects of changes in geometry on turbine performance is more acceptable and complete compared to the pioneer works, which focused on a parameter. This research combines several aspects to determine the effect of rivers and various water sources on the hydroturbine.

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30

Kumar, Anuj, R. P. Saini, Gaurav Saini, and Gaurav Dwivedi. "Effect of number of stages on the performance characteristics of modified Savonius hydrokinetic turbine." Ocean Engineering 217 (December 2020): 108090. http://dx.doi.org/10.1016/j.oceaneng.2020.108090.

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31

Patel, Vimal, Ganapathi Bhat, T. I. Eldho, and S. V. Prabhu. "Influence of overlap ratio and aspect ratio on the performance of Savonius hydrokinetic turbine." International Journal of Energy Research 41, no. 6 (November 10, 2016): 829–44. http://dx.doi.org/10.1002/er.3670.

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32

Mosbahi, Mabrouk, Ahmed Ayadi, Youssef Chouaibi, Zied Driss, and Tullio Tucciarelli. "Performance study of a Helical Savonius hydrokinetic turbine with a new deflector system design." Energy Conversion and Management 194 (August 2019): 55–74. http://dx.doi.org/10.1016/j.enconman.2019.04.080.

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33

Oyewola, Olanrewaju Miracle, Olajide Abraham Aogo, and Olusegun Olufemi Ajide. "Numerical Modelling and Characterisation of Hydrofoils for the Hybrid of Savonius and Darrieus Hydrokinetic Turbine." International Review of Mechanical Engineering (IREME) 16, no. 7 (July 31, 2022): 345. http://dx.doi.org/10.15866/ireme.v16i7.22594.

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34

Wu, Yanzhao, Weilong Guang, Ran Tao, Jie Liu, and Ruofu Xiao. "Dynamic mode structure analysis of the near-wake region of a Savonius-type hydrokinetic turbine." Ocean Engineering 282 (August 2023): 114965. http://dx.doi.org/10.1016/j.oceaneng.2023.114965.

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35

Alizadeh, Hossein, Mohammad Hossein Jahangir, and Roghayeh Ghasempour. "CFD-based improvement of Savonius type hydrokinetic turbine using optimized barrier at the low-speed flows." Ocean Engineering 202 (April 2020): 107178. http://dx.doi.org/10.1016/j.oceaneng.2020.107178.

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36

Chaudhari, Vimal N., and Samip P. Shah. "Numerical investigation on the performance of an innovative Airfoil-Bladed Savonius Hydrokinetic Turbine (ABSHKT) with deflector." International Journal of Thermofluids 17 (February 2023): 100279. http://dx.doi.org/10.1016/j.ijft.2023.100279.

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37

Sarma, Kanak Chandra, Agnimitra Biswas, and Rahul Dev Misra. "Experimental investigation of a two-bladed double stage Savonius-akin hydrokinetic turbine at low flow velocity conditions." Renewable Energy 187 (March 2022): 958–73. http://dx.doi.org/10.1016/j.renene.2022.02.011.

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38

Song, Ruiyin, Boyu Liu, Zhuangzhuang Yang, Congjie Ren, Xi Cui, and Yong Sheng. "Multi-objective optimization study of wave elimination and electricity generation performance of Savonius hydrokinetic turbine based on metamodel." Ocean Engineering 285 (October 2023): 115418. http://dx.doi.org/10.1016/j.oceaneng.2023.115418.

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39

Salleh, Mohd Badrul, Noorfazreena M. Kamaruddin, Zulfaa Mohamed-Kassim, and Elmi Abu Bakar. "Experimental investigation on the characterization of self-starting capability of a 3-bladed Savonius hydrokinetic turbine using deflector plates." Ocean Engineering 228 (May 2021): 108950. http://dx.doi.org/10.1016/j.oceaneng.2021.108950.

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40

Thiyagaraj, J., I. Rahamathullah, R. Bharathiraja, G. Anbuchezhiyan, and A. Ponshanmugakumar. "Influence of various augmentation devices on the performance characteristics of modified four bladed fixed flip type savonius hydrokinetic turbine." Materials Today: Proceedings 46 (2021): 3665–69. http://dx.doi.org/10.1016/j.matpr.2021.01.822.

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41

Seb Rengma, Thochi, Shubham Kumar, Mahendra Kumar Gupta, and P. M. V. Subbarao. "Performance investigation on blade arc angle and blade shape factor of a Savonius hydrokinetic turbine using artificial neural network." Energy Sources, Part A: Recovery, Utilization, and Environmental Effects 45, no. 3 (June 19, 2023): 8104–24. http://dx.doi.org/10.1080/15567036.2023.2226096.

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42

Kamal, Md Mustafa, and R. P. Saini. "A numerical investigation on the influence of savonius blade helicity on the performance characteristics of hybrid cross-flow hydrokinetic turbine." Renewable Energy 190 (May 2022): 788–804. http://dx.doi.org/10.1016/j.renene.2022.03.155.

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43

Kumar, Dinesh, and Shibayan Sarkar. "Modeling of flow-induced stress on helical Savonius hydrokinetic turbine with the effect of augmentation technique at different operating conditions." Renewable Energy 111 (October 2017): 740–48. http://dx.doi.org/10.1016/j.renene.2017.05.006.

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44

Salleh, Mohd Badrul, Noorfazreena M. Kamaruddin, and Zulfaa Mohamed-Kassim. "Experimental investigation on the effects of deflector angles on the power performance of a Savonius turbine for hydrokinetic applications in small rivers." Energy 247 (May 2022): 123432. http://dx.doi.org/10.1016/j.energy.2022.123432.

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45

Kumar, Dinesh, and Shibayan Sarkar. "Numerical investigation of hydraulic load and stress induced in Savonius hydrokinetic turbine with the effects of augmentation techniques through fluid-structure interaction analysis." Energy 116 (December 2016): 609–18. http://dx.doi.org/10.1016/j.energy.2016.10.012.

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46

Golecha, Kailash, T. I. Eldho, and S. V. Prabhu. "Study on the Interaction between Two Hydrokinetic Savonius Turbines." International Journal of Rotating Machinery 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/581658.

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47

Talukdar, Parag K., Vinayak Kulkarni, and Ujjwal K. Saha. "Performance estimation of Savonius wind and Savonius hydrokinetic turbines under identical power input." Journal of Renewable and Sustainable Energy 10, no. 6 (November 2018): 064704. http://dx.doi.org/10.1063/1.5054075.

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48

Nag, Aditya Kumar, and Shibayan Sarkar. "Performance analysis of Helical Savonius Hydrokinetic turbines arranged in array." Ocean Engineering 241 (December 2021): 110020. http://dx.doi.org/10.1016/j.oceaneng.2021.110020.

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49

Ding, Hao, Tian-Yu Zhou, Jin-Ting Wang, Okyay Altay, and Jian Zhang. "Energy harvesting in tuned liquid column dampers using Savonius type hydrokinetic turbines." Mechanical Systems and Signal Processing 186 (March 2023): 109846. http://dx.doi.org/10.1016/j.ymssp.2022.109846.

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50

Talukdar, Parag K., Arif Sardar, Vinayak Kulkarni, and Ujjwal K. Saha. "Parametric analysis of model Savonius hydrokinetic turbines through experimental and computational investigations." Energy Conversion and Management 158 (February 2018): 36–49. http://dx.doi.org/10.1016/j.enconman.2017.12.011.

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