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All Journal Rotasi R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Kreativitas PKM PEDULI: Jurnal Imiah Pengabdian Pada Masyarakat Indonesian Journal of Community Dedication Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Journal of Applied Science, Engineering, Technology, and Education International Journal of Marine Engineering Innovation and Research Jurnal Bakti Masyarakat Indonesia Academia Open Journal La Multiapp Indonesian Journal of Innovation Studies Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Eduvest - Journal of Universal Studies Madani : Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Unimus Nemui Nyimah
Damora Rhakasywi
Departement Of Mechanical Engineering, Universitas Pembangunan Nasional “Veteran” Jakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Other

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Journal : Rotasi

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Analisis Computational Fluid Dynamic (CFD) Pengaruh Overlap Ratio dan Jarak Bilah Berlapis pada Kinerja Turbin Angin Savonius Bilah Berlapis David, Jerico; Fahrudin, Fahrudin; Rhakasywi, Damora
ROTASI Vol 26, No 4 (2024): VOLUME 26, NOMOR 4, OKTOBER 2024
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.26.4.6-12

Abstract

Abstract  The demand for energy is increasing, therefore researchers are utilizing alternative energy sources such as wind energy. Savonius is a type of vertical axis wind turbine (VAWT) that is suitable for use in low wind speed conditions, making it capable of operating in urban areas. Researchers are conducting extensive studies to improve the performance of Savonius wind turbines. The Savonius wind turbine used is a Savonius wind turbine with added layered blades. This research was conducted using the computational fluid dynamics (CFD) simulation method with an existing layered Savonius wind turbine model and varied the overlap ratio and the distance between the layered blades to determine the impact of these variations on efficiency improvement using Ansys Fluent 2022 R2 software. The variations in this study included an overlap ratio of 10% with a blade distance of 33 mm and an overlap ratio of 15% with blade distances of 22 mm and 33 mm at a wind speed of 6.46 m/s. The results showed that the layered Savonius wind turbine from previous research with a configuration of a 10% overlap ratio and a blade distance of 22 mm had the best performance with a power coefficient (Cp) of 0.173 and a torque coefficient (Ct) of 0.46. The results of this study provide an understanding of the impact of increasing the value of the layered blade distance and the overlap ratio on the performance of the Savonius wind turbine, which, if not appropriate, can reduce its efficiency. Keywords: wind energy, Savonius wind turbine, layered blades, overlap ratio, distance between layered blades
Increasing The Performance Of A 500 W Small Scale Wind Turbine Through Blade Optimization With Low Wind Speed Computational Simulation Studies Rhakasywi, Damora
ROTASI Vol 27, No 2 (2025): VOLUME 27, NOMOR 2, JULI 2025
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.27.2.37-48

Abstract

The world is currently facing a dual energy crisis of increasing energy needs and the negative impact of the use of fossil energy. Indonesia has large wind energy potential, spread across various archipelagic regions. Based on a study by the Ministry of Energy and Natural Resources (ESDM), the potential for wind energy in Indonesia reaches 20,000 GW, with an mean wind speed of 3-7 m/s, proper design of wind turbine blades is an important aspect to ensure optimal performance and energy efficiency under various natural conditions. This research examines the performance and strength of inverse taper type wind turbine blades for horizontal shaft wind turbines, and pays attention to the characteristics of the wind that blows in Indonesia. This research used the method: TSR (tip speed ratio) design, tip to root chord ratio with tip, airfoil variation and determination of two blade segments combine to optimize linear rotation of the reverse tapered blade. Changes are made by going through a shape and performance selection process to determine the best blade using the BEM (blade element momentum) approach. The best designed blade is made from pine wood and its structure is modeled using the finite element method (FEM) to evaluate its safety level when used. The study results show that the best blade produces a peak Cp of 0.486 at a tip speed ratio (TSR) of 5, with a TSR range for Cp above 0.3 reaching 6.444, and can be used at air velocities of up to 15 m/s featuring a factor of safety (FoS) of 1.020.
Co-Authors Abhitah, Athallah Nabiel Achmad Zuchriadi Amir Marasabessy Armansyah Armansyah Ashfi Rayhan, Fajri Asrianti, Nadia Putri Bambang Sudjasta Bambang Sudjasta Bambang Sudjasta Budhi Martana Christoforus Deberland David, Jerico Dewi, Talitha Cahya Kemala Didit Widiyanto Diraharja, Rifat Satrio Dora Samaria fahrudin Fahrudin Fahrudin Fahrudin, Fahrudin Fajri Ashfi Rayhan Febriana, Miftakhul Jannah Francisco, Jeremi Harinaldi . Imron, Raja Shadam Ali Irga Irga Kusumo, Rayhan Suryo Lina Ayu Marcelina Muhammad Naufal Bari Nur Cholis Nurzati, Syarif Adhika Adhin Pamungkas, Eny Dewi Parluhutan, Yohanes Mangatur Pradana , Sigit Prasetyo, Eko Andi Rachman, Muhammad Nanda Fatur Rita Ismail Rizkiati Ramadhani, Mahirah Salwa Aurelia Ananda Rosidi, Erlia Nurbayti Shafa, Naura Sitorus, Henri BH Sudjasta, Bambang Sulistyawati, Wiwin Suryo, Taufik Hadi Sutarya, Muhamad Farad Teris Ekamila Wiwin Sulistyawati Yuliana Dewi