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All Journal JURNAL PENDIDIKAN TAMBUSAI Journal on Education JOURNAL OF SCIENCE AND SOCIAL RESEARCH Jurnal Ilmiah Profesi Pendidikan Scientific Journal of Mechanical Engineering Kinematika Didaktik : Jurnal Ilmiah PGSD STKIP Subang GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Teknomekanik Journal of Mechanical Engineering Jurnal Vokasi Mekanika MASALIQ: Jurnal Pendidikan dan Sains TeknoKreatif: Jurnal Pengabdian kepada Masyarakat Journal of Sciencce Technology and Visual Culture Greensusmater
Fitrah Qalbina
Universitas Negeri Padang
Religion Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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Numerical Simulation of the Effect of Blade Shape on Vertical Axis Wind Turbine Using NACA 0015, NACA 4415, and NACA 7510 Randi Purnama Putra; Yolli Fernanda; Fitrah Qalbina; Alhakim, Rezki
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 1 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/8fw5gp43

Abstract

Energy is a resource that can be used to perform various tasks, including fuel, electricity, mechanical energy, and heat. With technological advances and global economic development, the demand for electricity will continue to increase. This drives various research efforts towards alternative energy sources, ranging from the development of existing tools to the creation of new innovations. Wind turbines work by utilizing the kinetic energy of the wind flow to rotate the blades, which are then converted into electrical energy through a generator system. The purpose of this study is to analyze the effect of curvature shape on the Lift Coefficient (Cl), Drag Coefficient (Cd), and Power Coefficient (Cp) of vertical axis wind turbine blades. Simulations were carried out in 3D using ANSYS Fluent software and the SST turbulence model, with wind speeds ranging from 4 to 7 m/s. The aerodynamic profiles analyzed were NACA 0015, NACA 4415, and NACA 7510. Aerodynamic simulations of vertical axis wind turbines were carried out using a steady-state approach with a multi-reference frame (MRF) rotation model to obtain the average aerodynamic characteristics of the rotor. The simulation results show that NACA 4415 produces the best Cl value with relatively controlled Cd, while NACA 0015 shows the worst aerodynamic performance. NACA 7510 produces the highest Cp value at all wind speed variations, despite low Cl and high Cd values, indicating that the drag mechanism dominates torque generation at low speeds.
ANALISIS KINERJA TURBIN AIR VERTIKAL TIPE S-SHAPE PADA SALURAN MELENGKUNG MENGGUNAKAN COMPUTATIONAL FLUID DYNAMICS (CFD) Asadellah, Dimas Pandhu; Qalbina, Fitrah; Fernanda, Yolli; Putra, Randi Purnama
JOURNAL OF SCIENCE AND SOCIAL RESEARCH Vol 9, No 1 (2026): February 2026
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jssr.v9i1.5793

Abstract

Abstract: The s-shaped turbine is a hydrokinetic turbine that has the potential to be applied to open channel flows due to its ability to operate at low flow velocities and its simple construction. However, the performance of this turbine is greatly influenced by the surrounding hydrodynamic conditions, including the geometry of the flow domain. This study aims to analyze the effect of variations in the open channel domain angle on the flow characteristics and performance of the s-shaped Savonius turbine using a Computational Fluid Dynamics (CFD) approach. Simulations were carried out at three variations of domain angles, namely 20°, 30°, and 40°, with an inlet flow velocity of 0.5 m/s, a turbine diameter of 76 mm, and a turbine height of 76 mm. The performance parameters analyzed included torque, power coefficient (Cp), and torque coefficient (Ct), as well as flow characteristics in the form of velocity contours, pressure contours, and streamlines. The simulation results show that variations in the domain angle have a significant effect on the flow distribution, pressure pattern, and torque stability produced by the turbine. The domain with an angle of 20° produces the highest Cp and Ct values, while the 30° domain shows a significant decrease in performance due to the increase in the recirculation zone and pressure imbalance around the rotor. Keyword: S-Shape Turbine; Hydrokinetics; Open Channel; CFD; Domain Angle Abstrak: Turbin tipe s-shape merupakan salah satu turbin hidrokinetik yang potensial untuk diaplikasikan pada aliran saluran terbuka karena kemampuannya beroperasi pada kecepatan aliran rendah dan konstruksinya yang sederhana. Namun, kinerja turbin ini sangat dipengaruhi oleh kondisi hidrodinamika di sekitarnya, termasuk geometri domain aliran. Penelitian ini bertujuan untuk menganalisis pengaruh variasi sudut domain saluran terbuka terhadap karakteristik aliran dan performa turbin s-shape menggunakan pendekatan Computational Fluid Dynamics (CFD). Simulasi dilakukan pada tiga variasi sudut domain, yaitu 20°, 30°, dan 40°, dengan kecepatan aliran masuk 0,5 m/s, diameter turbin 76 mm, dan tinggi turbin 76 mm. Parameter kinerja yang dianalisis meliputi torsi, koefisien daya (Cp), dan koefisien torsi (Ct), serta karakteristik aliran berupa kontur kecepatan, kontur tekanan, dan streamline. Hasil simulasi menunjukkan bahwa variasi sudut domain memberikan pengaruh signifikan terhadap distribusi aliran, pola tekanan, dan stabilitas torsi yang dihasilkan turbin. Domain dengan sudut 20° menghasilkan nilai Cp dan Ct tertinggi, sedangkan domain 30° menunjukkan penurunan kinerja yang cukup signifikan akibat meningkatnya zona resirkulasi dan ketidakseimbangan tekanan di sekitar rotor. Kata kunci: Turbin S-Shape; Hidrokinetik; Saluran Terbuka; CFD; Sudut Domain
Innovation of a Hot Steam Boiling System to Increase the Productivity of Anchious Fish Processing in the Ombak Badabuih Fishermen Group in Pesisir Selatan Sari, Delima Yanti; Qalbina, Fitrah; Deswina, Melri; Andri, Suci
GANDRUNG: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2026): GANDRUNG: Jurnal Pengabdian Kepada Masyarakat
Publisher : Fakultas Olahraga dan Kesehatan, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/gandrung.v7i1.7466

Abstract

Anchovies are small pelagic fish belonging to the order Malacopterygi and family Clupeidae, with lengths ranging from 40–145 mm. They have thin, easily detached scales, a silvery lateral line located between the pectoral and pelvic fins, and are commonly found in coastal waters. West Sumatra Province consists of both marine and land areas, with several coastal regencies, including Pesisir Selatan Regency, which has a coastline of approximately 201.8 km. In Koto XI Tarusan District, about 80% of the population relies on fishing as their main livelihood. Anchovy fishing is typically conducted at night using floating bagan gear with a 1 mm mesh size. Preservation methods include boiling, salting, drying, smoking, and cooling. A survey of the Ombak Badabuih Fishermen’s Group in Simpang Ampang Pulai, Koto XI Tarusan District, revealed that fishermen face limitations due to inadequate anchovy boiling equipment. The current tools use thin metal plates, wood covers, and clay pans that must be replaced every three months, resulting in high costs and reliance on firewood as fuel. Therefore, this community service program aims to innovate a stainless-steel anchovy boiling system to improve product quality and enhance the fishermen’s economic conditions.
ANALISIS NUMERIK KINERJA TURBIN ANGIN DARRIEUS TIPE H TERHADAP VARIASI JUMLAH BLADE DAN KECEPATAN ANGIN DENGAN PENDEKATAN SIMULASI CFD Diki Afrianto; Andre Kurniawan; Yolli Fernanda; Fitrah Qalbina
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 11 No. 04 (2025): Volume 11 No. 04 Desember 2025 In Press
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.8776

Abstract

This study aims to analyze the aerodynamic performance of an H-type Darrieus wind turbine by varying the number of blades and wind speeds using the Computational Fluid Dynamics (CFD) method. The turbine geometry was modeled using SolidWorks 2022 and numerically simulated with ANSYS Fluent 2025. The models consist of three-blade and four-blade configurations employing the NACA 0012 airfoil profile, tested under three different freestream wind velocities: 7 m/s, 9 m/s, and 11 m/s. The simulations were conducted within static and rotating domains to examine the fluid flow characteristics around the rotor, including velocity distribution, pressure field, torque, and power efficiency. The results show that increasing wind speed leads to more complex and turbulent flow behavior, characterized by the emergence of vortex shedding behind the blades. The torque coefficient (Ct) and power coefficient (Cp) increased with higher wind speeds in the three-blade configuration, indicating greater energy conversion efficiency compared to the four-blade configuration. Conversely, the four-blade turbine exhibited reduced efficiency at higher wind speeds due to increased drag forces and inter-blade interactions, which caused energy losses. Overall, the findings demonstrate that the three-blade H-type Darrieus turbine provides superior aerodynamic efficiency and rotational stability at medium to high wind speeds, whereas the four-blade configuration performs better at lower wind speeds by generating higher starting torque. These results are expected to serve as a reference for the development of efficient vertical-axis wind turbine designs suitable for wind conditions in Indonesia.
Co-Authors Alhakim, Rezki Ambiyar, Ambiyar Ananda, Yoga Rizki Andre Kurniawan Andre Kurniawan Andri, Suci Arirohman, Ilham Dwi Arwizet Arwizet, Arwizet Asadellah, Dimas Pandhu Aulia, Muhammad Aulia Budi Syahri Deendarlianto Delima Yanti Sari Deswina, Melri Diki Afrianto Dinul, Fadhilah Ikhsan Dori Yuvenda Ernawati Ernawati Faisal , Amir Fajar Paundra Fauza, Anna Niska Febri Prasetya Guguk, Kardo Raja Hamonangan M , Felix R.M. Hamonangan M Harmiansyah Hendra, Carlen Muhammad Indarto Indarto Irzal, Irzal Kelvin Permana Saputra, Dwi Kurniawan, Badri Lathifa Putri Afisna Muhammad Aulia Muhammad Syaukani Nurdin Hendri Paundra, Fajar Purnama Putra, Randi Purwantono, Purwantono Putra, Randi Purnama Putty Yunesti Ramadan, Ryan Ramadhan, Raihan Randi Purnama Putra Refdinal, Refdinal Rita Kurnia Rustam Efendi Sabar Sabar Santoso, Bagas Saputro , • Adhitya Gandaryus Sugatra Dwi Atmaja Surya, Fajar Teguh Wibowo Wahyudi Wahyudi Wulansari, Rizky Ema Yolli Fernanda Yudistira , Hadi Teguh Yudistira Zikri, Khairul Zulkifli N