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Muhammad Habibullah
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Other

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Journal : Jurnal Rekayasa Mesin

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Optimization Design of NACA 4412 Airfoil Based on Genetic Algorithm for Efficiency and Maximum Lift Force Laksono, Aryo Eko; Bahatmaka, Aldias; Fitriyana, Deni Fajar; Laksono, Galih Tri; Habibullah, Muhammad; Nubli, Haris; Hyung, Cho Joung
Jurnal Rekayasa Mesin Vol. 20 No. 2 (2025): Volume 20, Nomor 2, Agustus 2025
Publisher : Mechanical Engineering Department - Semarang State Polytechnic

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jrm.v20i2.6531

Abstract

The NACA 4412 airfoil, renowned for its exceptional subsonic aerodynamic performance, faces critical operational constraints including elevated drag characteristics and premature stall onset at high angles of attack. While previous investigations have independently examined internal slot modifications and gurney flap implementations for aerodynamic enhancement, the synergistic potential of their combined application to the NACA 4412 configuration remains largely unexplored. This research presents a comprehensive optimization study that strategically integrates internal slot geometry with gurney flap configuration to maximize lift coefficient (CL) and aerodynamic efficiency (CL/CD) through advanced genetic algorithm optimization. The methodology employed high-fidelity computational fluid dynamics simulations using FLUENT with Spalart-Allmaras turbulence modeling, validated against experimental data to ensure accuracy. PCHIP numerical interpolation techniques were utilized to estimate aerodynamic coefficients across comprehensive angle-of-attack ranges not directly simulated. The optimized configuration demonstrated remarkable performance improvements, including a 75.68% increase in lift coefficient, an extension of the critical stall angle from 14° to 16°, enhanced aerodynamic efficiency, and significantly improved flow stability with reduced separation characteristics. These findings establish that the synergistic combination of internal slot and gurney flap modifications can fundamentally transform NACA 4412 aerodynamic performance, particularly excelling in high-angle-of-attack operational scenarios.
Co-Authors ', Murniati Abdurrahman, Sakhi Hasan Aldias Bahatmaka Ani Widiastuti, Ani Arif Wibowo Ekohariadi Febrianto, Achmad Fitriyana, Deni Fajar Haiban, Ryando Rama Hery Widijanto Hyung, Cho Joung Idwar, Idwar Ilhamsyah, Aksal Iltizam, Muhammad Irvanusi Cahyana, Reva Ismail, Muhammad Ibrara Laksono, Aryo Eko Laksono, Galih Tri Lubis, Ayuni Fachrunisa Makinuddin, Muhammad Mardela, Romi Melyani, Nasya Amirah Mohamad Zaenudin Nazori, Nazori Nubli, Haris Priyadi, M. Untung Zaenal Putri Laeshita, Putri Rofiqi, Muhammad Aufi Samae, Nitasnim Saputra, Akhmadiyah Sari Mariati Shahid, Bilal Sulthoni, Akhmad Syukron Prasaja, Ahmad Tatamara, Aghnia Tri Joko Umar Umar