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All Journal Didaktik : Jurnal Ilmiah PGSD STKIP Subang
Andre Kurniawan
Departemen Teknik Mesin Fakultas Teknik, Universitas Negeri Padang
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ANALISIS PENGARUH VARIASI JUMLAH SUDU TERHADAP KINERJA TURBIN CROSSFLOW DI PT XYZ Farhan Rahmat Putra; Andre Kurniawan; Yolli Fernanda; Randi Purnama Putra
Didaktik : Jurnal Ilmiah PGSD STKIP Subang Vol. 11 No. 04 (2026): Volume 11 No. 04 Desember 2025 In Build
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.8637

Abstract

This study aims to analyze the effect of blade number variation on the performance of a crossflow turbine used in the Micro-Hydro Power Plant (PLTMH) system at PT XYZ. The research was conducted using a numerical simulation approach based on Computational Fluid Dynamics (CFD) with Solidworks 2022 for geometry modeling and ANSYS Fluent 2025 R1 for fluid flow simulation. The variations of blade numbers investigated were 18, 24, 30, and 32 blades, with constant operating parameters including a flow rate of 0.03678 m³/s, a head of 0.3 m, and a rotational speed of 1500 rpm. The simulation results indicate that the number of blades significantly affects the torque, output power, and efficiency of the crossflow turbine. The configuration with 18 blades produced the best performance, achieving a torque of 21.39 Nm, an effective power of 3359.64 W, and an efficiency of 31.09%, while configurations with 24 and 32 blades showed a significant decrease in efficiency to around 6%. The analysis of velocity contours, pressure contours, and streamlines revealed that the 18-blade configuration provides a more stable and focused flow with uniform pressure distribution along the blade’s leading edge, resulting in greater tangential force on the runner shaft. In contrast, increasing the number of blades causes higher turbulence and energy losses. Therefore, it can be concluded that the 18-blade configuration is the most optimal design for achieving efficient crossflow turbine performance under the specified operating 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 (2026): Volume 11 No. 04 Desember 2025 In Build
Publisher : STKIP Subang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36989/didaktik.v11i04.8744

Abstract

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 Diki Afrianto Farhan Rahmat Putra Fitrah Qalbina Randi Purnama Putra Yolli Fernanda