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All Journal Rotasi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Sinergi JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Jurnal Teknik Mesin Indonesia Scientific Journal of Mechanical Engineering Kinematika International Journal of Advanced Technology in Mechanical, Mechatronics and Material (IJATEC)
Fajar Anggara
Universitas Mercu Buana
Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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PERANCANGAN DAN ANALISIS TEGANGAN PRESSURE VESSEL HORIZONTAL SEPARATOR DENGAN METODE ELEMEN HINGGA Aswin Aswin; Fajar Anggara
Scientific Journal of Mechanical Engineering Kinematika Vol 7 No 2 (2022): SJME Kinematika Desember 2022
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v7i2.219

Abstract

Pressure vessel separator is a pressure vessel that functions to separate fluids in the form of water, oil, and gas which have different densities. The design of the pressure vessel in this study aims to calculate the strength and stress in the material. The design data uses secondary data in the form of datasheets and process and instrumentation diagrams that show the specifications and orientation of the pressure vessel separator. The operating pressure is 5 psi, the design pressure is 200 psi, the operating temperature is 90 F and the design temperature is 212 F. The material of the saddle, shell, and head used is SA 516 Gr.70, nozzle neck using A106 Gr. B, and nozzle flange material using SA 105. The design and analysis was carried out using manual calculations referring to the ASME section VIII standard which is the standard for pressure vessel calculations and stress analysis using Solidworks software which is software for three-dimensional image modeling and finite element analysis. The results of the design and analysis using manual calculations using the ASME section VIII standard, then the maximum allowable working pressure is 290.934 psi. Circumferential stress analysis using Solidworks software obtained 21680.2 psi and longitudinal stress obtained 25430.7 psi, so the analysis results are declared safe because they do not exceed the design pressure and allowable stress values of 38000 psi.
Angles of Tilted and Length of Resonator Effect on The Efficiency of A Close-Open-Type Thermoacoustic Rinasa Agistya Anugrah; Fajar Anggara
ROTASI Vol 25, No 2 (2023): VOLUME 25, NOMOR 2, APRIL 2023
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/rotasi.25.2.1-8

Abstract

In determining the optimal design of the thermoacoustic engine, parameters were studied: tilt angle and resonator length. The purpose of this study is to find the highest efficiency in tilt angle and resonator length for a standing wave thermoacoustic engine (SWTE). The heat transfer properties therein were detected at three tilt angles of -90°, 0° and 90°, resulting in three resonator lengths variations such as 390, 780 and 1170 mm. This study was conducted to determine the magnitude of pressure amplitude using a two-pressure transducer method of recording by data acquisition and counting with Matlab software. The results of this study show that a tilt angle of 90° has the highest efficiency and a tilt angle of 0° has the lowest efficiency. A cavity length of 390mm yielded the highest SWTE efficiency, with an efficiency of 5.5%.
Studi potensi listrik dari hembusan angin luaran air conditioner Gian Villany Golwa; Fajar Anggara; Imam Hidayat
Jurnal Teknik Mesin Indonesia Vol. 18 No. 2 (2023): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v18i2.464

Abstract

The utilization of air conditioners (AC) will consume a lot of electricity in the world. According to the predictions of the International Energy Agency (IEA) electricity consumption for AC will be the main trigger for soaring world electricity demand in 2050. Data from the Central Statistics Agency (BPS) in March 2017 showed 7.98 percent of households in Indonesia use AC. The wind speed coming out of the condenser in an AC with a capacity of 0.5-2 PK has an average speed of 4.83 m/s. This research will test the potential electricity that can be generated from air blowing from an AC with 2 types of generator prototypes. Both types of generators will be tested directly on the AC exhaust unit. The test results show that with an average wind speed of 4.83 m/s, the vertical blade generator with 12 blades installed can produce up to 7 volts, and on the horizontal blade generator with 6 coils, each coil has 300 turns, the voltage is up to 14.82 Volts. The conclusion from this research is that the horizontal blade generator is sufficient to supply electricity to the battery before consumption.
Pemanfaatan Limbah Kantin Sekolah Menjadi Pupuk Organik Sebagai Teknik Pengolahan Sampah di Sekolah Nur Indah; Darwin Sebayang; Rita Sundari; Subekti Subekti; R. Ariosuko; Fajar Anggara; Gian Villany Golwa
JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) VOL. 8 NOMOR 2 JULI 2024 JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat)
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jppm.v8i2.21272

Abstract

Tujuan kegiatan ini adalah untuk keterampilan dan kemampuan dalam pembuatan pupuk organik cair pada siswa SMKN 35, dalam rangka mengurangi pencemaran lingkungan akibat limbah kantin disekolah. Pelatihan ini terdiri dari dua bagian, yaitu indoor dan outdoor. Dalam indoor diberikan materi mengenai proses dan prosedur pembuatan sampah menjadi pupuk cair. Sedangkan outdoor melakukan praktek cara pembuatan tabung composer dan cara pembuatan pupuk organik cair dari limbah yang berasal dari kantin dan buah-buahan yang busuk. Sehingga siswa-siswi SMKN 35 dapat memperoleh pengetahuan dan keterampilan cara membuat pupuk cair organik dari limbah kantin dan buah-buahan busuk. Hasil kegiatan juga berupa antusiasme dan semangat siswa-siswi yang mengikuti pelatihan sebanyak 30 orang menunjukkan ketertarikan dalam praktek pembuatan pupuk cair organik dari limbah.
STUDI NUMERIK KARAKTERISTIK VORTEX GENERATOR PADA MODIFIKASI AIRFOIL JOUKOWKSI DAN PADA SILINDER Re = 100,000 Fajar Anggara; Dedik Romahadi; Subekti; Alief Avicenna Luthfie
Scientific Journal of Mechanical Engineering Kinematika Vol 10 No 2 (2025): SJME Kinematika Desember 2025
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v10i2.797

Abstract

Utilization of ocean wave energy is one of the renewable energy sources with high potential in Indonesia. The use of Vortex Induced Vibration (VIV) has been widely developed by researchers, where the vortex will self-excite to create vibrations. Of course, its efficiency will increase when installed simultaneously to form a row. Wake Induced Vortex (WIV) has greater potential because it adds vibration through a vortex generator in a row of VIVs in the wake area. This study studied the characteristics of the vortex generator that will be used in WIV. The research method used CFD simulation Fluent 2025 with 3-dimensional geometry. The mesh used is 700 thousand in the form of a hexahedral. Independent mesh studies have been conducted so that the number of meshes 700 thousand is the most optimal and does not affect the simulation results. The Y+ value used is 1, so the mesh thickness close to the wall for Re 100,000 is 1 mm. The location of the flow separation greatly affects the vortex structure and shedding frequency of each geometry. Whereas airfoil produces bigger power but it has less frequency shedding than cylinder.
Co-Authors Achmad Ramadhan Muzaki Alief Avicenna Luthfie Andi Firdaus Sudarma Aswin Aswin Darwin Sebayang Dedik Romahadi Gian Villany Golwa Henry Carles Hifdzul Luthfan Habibullah Hui Xiong Hui Xiong Imam Hidayat Muhamad Fitri Muhammad Nadjib Nur Indah Pathur Razi Ansyah R. Ariosuko Rikko Putra Youlia Rita Sundari Roy Ama Ratu S. Mahzan Subekti Subekti Subekti Wahyudi Wahyudi Yosua Heru Irawan