Ulumiyah, Navita Fatwatul (2025) Analisis Pengaruh Kemiringan Turbin Ulir Archimedes terhadap Kinerja Pembangkit Listrik Tenaga Mikrohidro dengan Computational Fluid Dynamics di Desa Penambangan. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk menganalisis pengaruh variasi kemiringan turbin dan jarak antar ulir terhadap kinerja turbin ulir Archimedes pada sistem Pembangkit Listrik Tenaga Mikrohidro (PLTMH) di Desa Penambangan, Balongbendo, Sidoarjo. Metode Computational Fluid Dynamics (CFD) digunakan untuk mensimulasikan aliran fluida dan menganalisis parameter performa turbin seperti torsi, daya mekanik, efisiensi, serta karakteristik aliran fluida. Variasi yang digunakan meliputi dua kemiringan poros horizontal yaitu 15° dan 20°, dengan tiga variasi jarak antar ulir yaitu 12 cm, 20 cm, dan 25 cm pada debit konstan sebesar 0,330972 m³/s. Simulasi dilakukan dalam kondisi tunak menggunakan model turbulensi k-ω SST. Hasil simulasi menunjukkan bahwa konfigurasi terbaik diperoleh pada kemiringan poros 20° dan jarak antar ulir 12 cm dengan torsi maksimum sebesar 18,22 Nm dan daya mekanik 132,66 Watt pada kecepatan 80 RPM. Distribusi kecepatan dan tekanan pada konfigurasi ini cenderung lebih merata, serta pola streamline menunjukkan aliran fluida yang terarah mengikuti bentuk ulir secara optimal. Efisiensi sistem tertinggi tercatat sebesar 69,16% menunjukkan bahwa variasi jarak antar ulir memengaruhi efektivitas konversi energi.
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This study aims to analyze the effect of turbine inclination and inter-thread spacing variations on the performance of an Archimedes Screw turbine in a Micro-Hydro Power Plant (MHPP) system located in Penambangan, Balongbendo, Sidoarjo. The Computational Fluid Dynamics (CFD) method is employed to simulate fluid flow and evaluate turbine performance parameters, including torque, mechanical power, efficiency, and fluid flow characteristics. The variations investigated include two shaft inclinations, 15° and 20°, and three inter-thread spacings : 12 cm, 20 cm, and 25 cm, under a constant flow rate of 0.330972 m³/s. Simulations are carried out under steady-state conditions using the k-ω SST turbulence model. The results indicate that the optimal configuration is achieved at a 20° shaft inclination with a 12 cm inter-thread spacing, producing a maximum torque of 18.22 Nm and mechanical power of 132.66 Watts at a rotational speed of 80 RPM. In this configuration, the velocity and pressure distributions appear more uniform, and the streamline pattern shows that the fluid flow follows the Screw geometry optimally. The highest recorded system efficiency is 69.16%, indicating that inter-thread spacing plays a significant role in the effectiveness of energy conversion.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Computational Fluid Dynamics; Pembangkit Listrik Tenaga Mikrohidro, Turbin Ulir Archimedes, Archimedes Screw Turbine, Micro-Hydropower Plant |
| Subjects: | Q Science Q Science > QC Physics Q Science > QC Physics > QC151 Fluid dynamics |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Navita Fatwatul Ulumiyah |
| Date Deposited: | 30 Jul 2025 03:10 |
| Last Modified: | 30 Jul 2025 03:10 |
| URI: | http://repository.its.ac.id/id/eprint/123415 |
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