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All Journal Prosiding Seminar Teknologi Kebumian dan Kelautan (SEMITAN Journal of Applied Sciences, Management and Engineering Technology (JASMET)
Renanda Bayu Harsi
Institut Teknologi Adhi Tama Surabaya
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Earth & Planetary Sciences Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Numerical Study of The Airfoil Pitch Angle on The Darrieus-Savonius Combination Turbine Erifive Pranatal; Renanda Bayu Harsi
Journal of Applied Sciences, Management and Engineering Technology Vol 2, No 1 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2021.v2i1.2113

Abstract

AbstractThe Darrieus turbine is used as an ocean current converter to generate renewable electrical energy. One way to improve turbine performance is to determine the optimal pitch angle. Therefore, the purpose of this study was to determine the optimal pitch angle of the NACA 0018 airfoil with angle variations of -6°, -2°, 0° and 2°. Numerical method with the help of Ansy Fluent software was carried out for the construction of the turbine. The result of this research is that the angle of 2° produces the largest coefficient of power and torque compared to other angles. This happens because the direction of the lifting force on the forward airfoil is in accordance with the rotation of the turbine.Keywords: Ocean Current, Turbine, Pitch Angle
Defining Ship Principal Dimensions Using Comparison Method Renanda Bayu Harsi; Nuzulul Arif
Journal of Applied Sciences, Management and Engineering Technology Vol 2, No 2 (2021)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2021.v2i2.2129

Abstract

AbstractIn the process of finding the principal dimension of the ship there are various methods that can be used. In this study, the Comparison method will be used to obtain the main size of the ship and the main dimensions of the ship are obtained, namely, length (L) = 20,152 meters, beam (B) = 5.5 meters, depth (H) = 2,939 meters, draft (T) = 1.5129 meters, service speed (Vs) = 20 knots. The ship's resistance is 152.6 kN at service speed (Vs) = 20 knots. And can be overcome with a power of 2426.31 HP. The power taken to meet these needs is 2500 HP supplied by 2 outboard engines with a power of 1300 HP each.Keywords : Comparison Method.
ANALISA PENGARUH PENAMBAHAN ENERGY SAVING DEVICE (ESD) PROPELLER BOSS CAP FIN (PBCF) TERHADAP PERFORMA PROPELLER B-SERIES PADA KAPAL RO-RO 600 GT Renanda Bayu Harsi; Erifive Pranatal
Jurnal Sumberdaya Bumi Berkelanjutan (SEMITAN) Vol 1, No 1 (2022)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.semitan.2022.3233

Abstract

ESD atau Energy Saving Devices adalah berbagai jenis peralatan yang mengacu pada pada konsep tindakan atau metode untuk menghemat energi. Pada dunia perkapalan, ESD ada banyak macamnya seperti Becker Mewis Duct, Wake Equalising Duct, dan Propeller Boss Cap Fins (PBCF). PBCF merupakan penambahan sirip kecil di bagian belakang propeller atau lebih tepatnya pada boss cap dengan tujuan untuk memperkecil atau bahkan meniadakan hub vortex saat propeller beroperasi. Pada penelitian ini akan digunakan metode CFD melalui software ANSYS Students untuk mencari pengaruh terhadap gaya dorong dari pemasangan PBCF pada propeller B-Series B4-40 dengan menggunakan ukuran utama kapal RO-RO 600 GT sebagai acuan penentuan dimensi propeller. Variasi PBCF yang akan diuji dalam penelitian ini adalah variasi pitch angle dengan variasi sudut 25°, 30°, 35°, 40°, dan 45°. Hasil uji CFD melalui software ANSYS menunjukkan adanya penambahan dan penurunan performa dalam hal gaya dorong propeller dengan penambahan gaya dorong tertinggi dihasilkan oleh PBCF dengan sudut 45° yaitu 0.46% dan penurunan terbesar dialami saat penambahan PBCF dengan sudut 30° yaitu sebesar -0.61%.
THE EFFECT OF ROOT GAP ON BENDING TEST USING FCAW WELDING ON SS 400 STEEL MATERIALS AT 3G POSITION Nuzulul Arif; Erifive Pranatal; Iftika Philo Wardhani; Renanda Bayu Harsi
Journal of Applied Sciences, Management and Engineering Technology Vol 3, No 2 (2022)
Publisher : Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jasmet.2022.v3i2.3644

Abstract

This study aims to analyze the effect of the root gap on bending test of SS 400 steel materials with different thicknesses of 10 mm and 12 mm using FCAW (Flux Core Arc Welding) welding in the 3G Vertical up position without backing ceramic. This study uses quantitative method, and the standard used in the test is ASME section IX (2019). The results of the study concluded that in specimens within the thickness of 10 mm, the highest value was obtained at the root gap variation of 4.4 mm with a bending stress value of: 467.48 MPa. Then on the specimen with a thickness of 12 mm, the highest value was found in a variation of 3 mm with a bending stress value of: 805.37 MPa
Co-Authors Erifive Pranatal Iftika Philo Wardhani Nuzulul Arif