SYAMSUDIRJA, ALWI (2026) OPTIMASI KECEPATAN KIPAS PADA RADIATOR TUBE-AND-FIN MENGGUNAKAN MODEL NUMERIK REYNOLDS- AVERAGED NAVIER-STOKES (RANS) DENGAN COUPLED INTERFACE. S1 thesis, Universitas Mercu Buana Jakarta.
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Abstract
This study aims to determine the optimum fan velocity in a tube-and-fin radiator using a Reynolds-Averaged Navier–Stokes (RANS) numerical model with a coupled interface, which enables simultaneous heat transfer interaction between fluid and solid domains. The simulation was conducted using the RANS k–ω SST turbulence model, with a coolant inlet temperature of 363.15 K (90°C), an air inlet temperature of 300 K (26.85°C), and fan velocity variations of 2, 4, 6, and 8 m/s. The analysis focused on temperature distribution, coolant temperature reduction, and pressure drop, and the optimum fan velocity was determined using polynomial regression and the weighted sum method. The simulation results indicate that increasing fan velocity enhances heat transfer performance but also increases pressure drop. The optimum fan velocity of 3.87 m/s results in a coolant temperature reduction of 0.0485 K with a pressure drop of 11.806 Pa, providing the best balance between cooling performance and pressure drop. Therefore, the RANS model with a coupled interface is capable of representing fluid–solid thermal interaction in determining the optimal operating condition of the radiator. Keywords: Tube-and-fin radiator, Reynolds-Averaged Navier–Stokes (RANS), coupled interface, fan velocity optimization, pressure drop. Penelitian ini bertujuan menentukan kecepatan kipas optimum pada radiator tipe tube-and-fin menggunakan model numerik Reynolds-Averaged Navier–Stokes (RANS) dengan coupled interface, yaitu pendekatan yang menghubungkan perpindahan kalor antara fluida dan padatan secara simultan. Simulasi dilakukan menggunakan model turbulensi RANS k-ω SST dengan temperatur masuk air pendingin sebesar 363,15 K (90°C), temperatur masuk udara sebesar 300 K (26,85°C), serta variasi kecepatan kipas 2, 4, 6, dan 8 m/s. Analisis dilakukan terhadap distribusi temperatur, penurunan temperatur air pendingin, dan pressure drop, kemudian kecepatan kipas optimum ditentukan menggunakan regresi polinomial dan metode weighted sum. Hasil simulasi menunjukkan bahwa peningkatan kecepatan kipas meningkatkan perpindahan kalor, namun juga meningkatkan pressure drop. Kecepatan kipas optimum sebesar 3,87 m/s menghasilkan penurunan temperatur air pendingin sebesar 0,0485 K dengan pressure drop sebesar 11,806 Pa, yang memberikan keseimbangan terbaik antara kemampuan pendinginan dan pressure drop. Dengan demikian, model RANS dengan coupled interface mampu merepresentasikan interaksi termal fluida– padatan dalam menentukan kondisi operasi optimum radiator. Kata Kunci: Radiator tube-and-fin, Reynolds-Averaged Navier–Stokes (RANS), coupled interface, optimasi kecepatan kipas, pressure drop.
| Item Type: | Thesis (S1) |
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| NIM/NIDN Creators: | 41324120019 |
| Uncontrolled Keywords: | Radiator tube-and-fin, Reynolds-Averaged Navier–Stokes (RANS), coupled interface, optimasi kecepatan kipas, pressure drop. |
| Subjects: | 000 Computer Science, Information and General Works/Ilmu Komputer, Informasi, dan Karya Umum > 000. Computer Science, Information and General Works/Ilmu Komputer, Informasi, dan Karya Umum > 004 Data Processing, Computer Science/Pemrosesan Data, Ilmu Komputer, Teknik Informatika > 004.6 Interfacing and Communications/Tampilan Antar Muka (Interface) dan Jaringan Komunikasi Komputer 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | khalimah |
| Date Deposited: | 09 Sep 2026 14:29 |
| Last Modified: | 09 Sep 2026 14:29 |
| URI: | http://repository.mercubuana.ac.id/id/eprint/103751 |
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