INVESTIGASI PENGARUH WIND LENS DEFLECTOR PADA SAVONIUS WIND TURBINE SEMI-CIRCULAR TERHADAP TORSI DAN DAYA YANG DIHASILKAN

Muhammad Rafli Sukma, . (2025) INVESTIGASI PENGARUH WIND LENS DEFLECTOR PADA SAVONIUS WIND TURBINE SEMI-CIRCULAR TERHADAP TORSI DAN DAYA YANG DIHASILKAN. Skripsi thesis, Universitas Pembangunan Nasional Veteran Jakarta.

	Text Abstrak.pdf Download (414kB)
	Text Awal.pdf Download (4MB)
	Text Bab 1.pdf Restricted to Repository UPNVJ Only Download (743kB)
	Text Bab 2.pdf Restricted to Repository UPNVJ Only Download (773kB)
	Text Bab 3.pdf Restricted to Repository UPNVJ Only Download (1MB)
	Text Bab 4.pdf Restricted to Repository UPNVJ Only Download (1MB)
	Text Bab 5.pdf Download (486kB)
	Text Daftar Pustaka.pdf Download (381kB)
	Text DAFTAR RIWAYAT HIDUP.pdf Restricted to Repository UPNVJ Only Download (201kB)
	Text Lampiran.pdf Restricted to Repository UPNVJ Only Download (2MB)
	Text Artikel KI.pdf Restricted to Repository staff only Download (355kB)
	Text Hasil Plagiarisme.pdf Restricted to Repository staff only Download (11MB)

Abstract

The rising demand for electrical energy in urban areas encourages the utilization of renewable energy sources such as wind turbines. The Savonius turbine, a type of Vertical Axis Wind Turbine (VAWT), holds potential for urban applications due to its simple design and ability to operate at low wind speeds, yet its low efficiency remains a primary challenge. This research conducts a numerical investigation using Computational Fluid Dynamics (CFD) to analyze the effect of adding a Wind lens deflector—an augmentation device reported to significantly improve performance—on a semi-circular Savonius turbine. A 2D transient simulation was performed using the k-epsilon (k-ε) Realizable turbulence model across various Tip Speed Ratios (TSRs). After the simulation method was validated against experimental data from Hayashi et al. (2004) with an average error of only 2.47%, a comparative analysis was conducted. Contrary to the initial hypothesis, the results indicate that the addition of the Wind lens caused a drastic performance degradation, ranging from 51% to 95%. In-depth analysis of the flow patterns revealed a dual failure mechanism: (1) the failure of the high-inertia jet flow to attach to the advancing blade, which reduced positive torque, and (2) the formation of a massive vortex behind the turbine, creating backflow and extreme negative torque on the returning blade. It is concluded that the tested Wind lens configuration is counter-productive and unsuitable for enhancing the efficiency of the Savonius turbine.

Item Type:	Thesis (Skripsi)
Additional Information:	[No.Panggil: 2110313033] [Pembimbing: Fakhri Akbar Ayub] [Penguji 1: Purwo Joko Suranto] [Penguji 2: Fathin Muhammad Mahdhudhu]
Uncontrolled Keywords:	Savonius Wind Turbine, Wind lens Deflector, CFD, Coefficient of Power, Torque Analysis, Aerodynamic Failure, Vortex Formation
Subjects:	Q Science > Q Science (General) V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering
Divisions:	Fakultas Teknik > Program Studi Teknik Perkapalan (S1)
Depositing User:	MUHAMMAD RAFLI SUKMA
Date Deposited:	08 Aug 2025 08:09
Last Modified:	08 Aug 2025 08:09
URI:	http://repository.upnvj.ac.id/id/eprint/39325

Actions (login required)

View Item