Simulasi Radiasi UV dengan Variasi Solar Incident Angle terhadap Thermomechanics Turbin Angin Darrieus Material Polimer

Gymnastiar, Evan (2026) Simulasi Radiasi UV dengan Variasi Solar Incident Angle terhadap Thermomechanics Turbin Angin Darrieus Material Polimer. Bachelor thesis, Institut Teknologi Kalimantan.

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Abstract

Pemanfaatan energi angin sebagai Energi Baru Terbarukan (EBT) di Indonesia menghadapi tantangan akibat rendahnya rata-rata kecepatan angin, sehingga salah satu solusi yang digunakan adalah turbin angin VAWT (Vertical Axis Wind Turbine) tipe Darrieus H-Rotor. Modifikasi bilah menggunakan V-Shape airfoil NACA 4412 terbukti mampu meningkatkan kinerja turbin. Material polimer memiliki keunggulan berupa, massa ringan, kemudahan proses manufaktur, dan recylclable. Namun, paparan radiasi matahari secara terus-menerus dapat meningkatkan temperatur hingga berpotensi memengaruhi respon termal dan kekuatan strukturalnya. Penelitian ini bertujuan untuk menganalisis pengaruh solar incident angle terhadap distribusi temperatur dan respon kekuatan stuktural pada turbin berbahan PLA, ABS, dan PETG. Simulasi Computational Fluid Dynamics (CFD) digunakan untuk mendapatkan distribusi temperatur, kemudian hasilnya digunakan sebagai thermal load pada simulasi Static Structural berbasis Finite Element Method (FEM) untuk memperoleh tegangan von mises dan deformasi total. Selanjutnya, pemilihan material yang terbaik dipilih menggunakan Multi Criteria Decision Making (MCDM) dengan metode TOPSIS. Hasil simulasi menunjukkan bahwa temperatur maximum tertinggi didapatkan pada PLA (61.94°C), diikuti PETG (55.38°C), dan ABS (55.22°C). PLA telah melampaui glass transition temperature materialnya, sehingga tidak direkomendasikan untuk aplikasi turbin angin pada lingkungan yang terpapar radiasi matahari. Pada analisis struktural, ABS menghasilkan von mises maximum (1.259 Mpa) dengan deformasi total (0.667 mm), PETG maximum von mises sebesar (0.715 Mpa) dan deformasi total (0.556 mm), hal ini yang menunjukkan peningkatan temperatur akibat perubahan solar incident angle memengaruhi respon mekain material. Berdasarkan analisis MCDM, material ABS memperoleh nilai preferensi tertinggi sebesar 0.5275, sehingga dipilih sebagai material yang paling optimal untuk diaplikasikan pada turbin angin Dariieus

Item Type: Thesis (Bachelor)
Subjects: Q Science > QA Mathematics > QA76 Computer software
T Technology > TJ Mechanical engineering and machinery
Divisions: Jurusan Ilmu Kebumian dan Lingkungan > Teknik Material dan Metalurgi
Depositing User: Evan Evan Gymnastiar
Date Deposited: 17 Jul 2026 02:09
Last Modified: 17 Jul 2026 02:09
URI: http://repository.itk.ac.id/id/eprint/27518

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