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Analisis Performa Mesin Diesel Caterpillar 3196 5ED04240 Menggunakan Bahan Bakar Solar Dan Biosolar B20 Dengan Metode Eksperimental Wibisono, Yusuf; Ruslan, Wegie; Bunga, Nely Toding
Jurnal Mekanik Terapan Vol 1, No 2 (2020): November
Publisher : Jurnal Mekanik Terapan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Penggunaan biosolar B20 dalam pemanfaatan energi diesel di Indonesia terus dikembangkan. Dalam dunia industri, regulasi pemerintah mewajibkan untuk menggunakan bahan bakar jenis diesel tanpa terkecuali. Bahan bakar tersebut sebagai energi terbarukan sehingga mengurangi penggunaan bahan bakar fosil. Pada kuartal III tahun 2018, diluncurkan regulasi biosolar B20 untuk semua industri. Kecemasan pelaku industri karena pengalihan bahan bakar dari solar menjadi biosolar B20 dari segi performa mesin inilah sehingga dilakukan penelitian ini untuk menjawab pertanyaan pelaku industri. Metode yang digunakan adalah metode eksperimental dengan menggunakan bahan bakar solar dan biosolar B20 terhadap mesin uji berbahan bakar diesel. Dari semua putaran yang telah diuji didapatkan bahwa bahan bakar jenis solar mempunyai kebutuhan bahan bakar spesifik paling ekonomis ketika putaran mesin 2100 rpm dengan nilai 0,064 l/kWh dan tenaga 230,23 HP. Torsi maksimal dicapai ketika putaran 1000 rpm pembebanan 100% dengan nilai 1575 Nm pada bahan bakar jenis solar. Daya teoritis maksimum dihasilkan oleh bahan bakar jenis solar pada putaran mesin 2100 rpm kondisi high idle dengan nilai 235,12 HP. Daya efektif mesin maksimum juga dihasilkan oleh bahan bakar jenis solar pada putaran mesin 2100 rpm kondisi high idle dengan nilai 235,33 HP.

Analisis Performa Mesin Diesel Caterpillar 3196 5ED04240 Menggunakan Bahan Bakar Solar Dan Biosolar B20 Dengan Metode Eksperimental Yusuf Wibisono; Wegie Ruslan; Nely Toding Bunga
Jurnal Mekanik Terapan Vol 1 No 2 (2020): November 2020
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v1i2.3356

Penggunaan biosolar B20 dalam pemanfaatan energi diesel di Indonesia terus dikembangkan. Dalam dunia industri, regulasi pemerintah mewajibkan untuk menggunakan bahan bakar jenis diesel tanpa terkecuali. Bahan bakar tersebut sebagai energi terbarukan sehingga mengurangi penggunaan bahan bakar fosil. Pada kuartal III tahun 2018, diluncurkan regulasi biosolar B20 untuk semua industri. Kecemasan pelaku industri karena pengalihan bahan bakar dari solar menjadi biosolar B20 dari segi performa mesin inilah sehingga dilakukan penelitian ini untuk menjawab pertanyaan pelaku industri. Metode yang digunakan adalah metode eksperimental dengan menggunakan bahan bakar solar dan biosolar B20 terhadap mesin uji berbahan bakar diesel. Dari semua putaran yang telah diuji didapatkan bahwa bahan bakar jenis solar mempunyai kebutuhan bahan bakar spesifik paling ekonomis ketika putaran mesin 2100 rpm dengan nilai 0,064 l/kWh dan tenaga 230,23 HP. Torsi maksimal dicapai ketika putaran 1000 rpm pembebanan 100% dengan nilai 1575 Nm pada bahan bakar jenis solar. Daya teoritis maksimum dihasilkan oleh bahan bakar jenis solar pada putaran mesin 2100 rpm kondisi high idle dengan nilai 235,12 HP. Daya efektif mesin maksimum juga dihasilkan oleh bahan bakar jenis solar pada putaran mesin 2100 rpm kondisi high idle dengan nilai 235,33 HP.

RANCANG BANGUN MESIN GERINDA COPY CAMSHAFT Nely Toding Bunga; Hendri Sukma; Hasan Hariri; Richard; Y. A. Sihombing
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 1 Nomor 1 Tahun 2019
Publisher : Fakultas Teknik Universitas Pancasila

Mesin gerinda copy camshaft adalah mesin untuk menduplikat atau memperbanyak camshaft. Tujuan dari rancang bangun ini adalah agar pengerjaan pembuatan camshaft menjadi lebih mudah karena mesin melakukan copy master secara otomatis sesuai dengan master tersebut. Metode perancangan yang digunakan adalah metode Ulrich & Eppinger serta metode DFMA sebagai metode manufakturnya. Proses racang bangun mesin gerinda copy camshaft ini meliputi:pembuatan konsep desain, identifikasi bahan, identifikasi mesin dan peralatan yang digunakan, serta identifikasi gambar kerja. Hal yang perlu di perhatikan dalam pembuatan mesin gerinda copy camshaft ini adalah kerapatan sambungan pada rangka atas dan kaki rangka sehingga tidak terjadi getaran pada saat mesin beroperasi. Mesin ini memiliki dimensi panjang 1000 mm, lebar 600 mm, tinggi 500 mm. Pengujian kinerja mesin yang dilakukan dengan cara pengujian secaralangsung membuat camshaft. Hasil pengujian waktu yang dibutukan untuk membuat satu buah camshaft adalah 10 menit, dengan kecepatan putaran 2800 RPM.

Analisis Motor Listrik Tipe Synchronous dengan Metode Komputasi James Julian; Fitri Wahyuni; Lomo Mula Tua; Nely Toding Bunga
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 3 Nomor 1 Tahun 2021
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v3i1.1879

In the current technological development, the electric motor is the most popular in various industrial applications. Electric motors today have evolved very quickly and have a significant impact on the lives of the wider community. The use of environmentally friendly and efficient energy is one of the reasons why this motorbike has become a pioneer of technological advances, especially in the automotive world. This research focuses on conducting a comprehensive analytical study on one type of electric motor, namely synchronous because it is widely applied in various conditions today. The analysis was carried out using a computational method by applying the finite element as a method of solving the magnetic field case involving Maxwell's equations and its impact on the torque generated in this synchronous motor. From the computation results, it is found that this synchronous motor does have a high torque when the magnetic field flux works constantly at 0.015 Wb. With an average torque generated by this synchronous motor of 1.5 kW.

Karakteristik Kekerasan Lasan Titik Gesekan dan Pengadukan pada Paduan Aluminium 5052-H112 Armansyah; Juri Saedon; Ferdyanto; Nely Toding Bunga; James Julian
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3183

Issues in friction stir spot welding focus mainly on the mechanical characteristic affected by its Hardness. This Hardness must be maintained by evenly temperature distribution in weld zones during welding. The process parameters are mainly responsible for the development of the hardness of the friction stir spot weld. This study presented the hardness evaluations on the friction stir spot weld via the Hardness-Vickers test and analysis of the temperature distribution in the weld zones via the finite element method. The workpiece samples used in this study were Aluminium alloy 5052-H112 with a thickness of 2 millimeters in the lap-shear mode based on 3 main parameters at low and high levels of parameters configuration. The results obtained via the Hardness-Vickers tests exhibited a value of 42-HV located in the middle of the spot-weld center using a low-level parameters configuration. This value increased to 64-HV around the vicinity of the keyhole. And then the value decreased to 53-HV outside the keyhole, about 6 millimeters from the spot-weld center. Using high-level parameter configuration, the Hardness-Vickers value increased to 61-HV in the middle of the spot-weld center. The value then increased to 76-HV in the vicinity of the keyhole. Furthermore, the value decreased at 60-HV outside the keyhole, which ca 6 millimeters away from the spot-weld center. The temperature distribution of the weld zones achieved 480 oC in the vicinity of the keyhole using the low-level parameter configuration. Slowly, the temperature declined to 380 oC at 6 mm away from the friction spot-weld center in the HAZ. Using the high-level parameters configuration, the temperature distribution reached 540 oC in SZ, and slowly reduced to 425 oC in HAZ. Based on the results, it was found that by using high-level parameters configuration the hardness of the friction stirs spot weld exhibited better Hardness-Vickers value and evenly temperature distribution in the weld zones.

Characterization of the Co-Flow Jet Effect as One of the Flow Control Devices James Julian; Waridho Iskandar; Fitri Wahyuni; Ferdyanto; Nely Toding Bunga
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 4 Nomor 2 Tahun 2022
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v4i1.3437

The computational study discusses the application of the co-flow jet technique as a fluid flow control device on the NACA 0015 airfoil. The numerical equation used is the RANS equation with the k-ε turbulence model. There are three variations of the mesh proposed in this paper. The first variation is a fine mesh with 100,000 elements. The second variation is a medium mesh with 50,000 elements. Meanwhile, the third variation is coarse mesh with 25,000 elements. Based on the mesh independence test results, the mesh with the lowest error value is the fine mesh. Co-flow jet is proven to control fluid flow on the upper side of NACA 0015. Co-flow jet can also improve the aerodynamic performance of NACA 0015 by increasing Cl and decreasing Cd. The increase in Cl was 114% and the decrease in Cd was 24%. The fluid flow separation on the upper side of the airfoil can also be handled well by the co-flow jet.

Analisis Perpindahan Panas pada Sirkulasi Air Penyulingan Nilam dengan Tangki Bervolume 150 Liter Zaky Assiddiqie; Nely Toding Bunga
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.3465

Indonesia is the world’s main exporter of patchouli plants (Pogostemon Cablin Benth). Patchouli plants produce essential oil by distillation; this essential oil has a constituent component called patchouli alcohol and is widely used in the aromatic industry. Therefore, a patchouli refining process is needed so that Indonesia’s patchouli can improve its quality in the eyes of the world. The purpose of this research is to observe the process of cooling hot patchouli steam into patchouli oil to optimize the current process. This study's analytical method is a simulation approach with CFD software. 50 kg of dried patchouli leaves and stems will go through a combustion process and then be distilled in a 150 liter volume tank for 5 hours. During the distillation process, there is a heat transfer phenomenon called conduction and convection. The LMTD value was 327 K, the heat transfer rate was 103,39 W, the overall heat transfer was 223,45 W/m2K, the NTU value was 0,018, and the system's effectiveness was 0.89% using LMTD and the -NTU method.

Aerodynamic Performance Improvement on NACA 4415 Airfoil by Using Cavity James Julian; Waridho Iskandar; Fitri Wahyuni; Nely Toding Bunga
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi Volume 5 Nomor 1 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i1.4259

This study uses a numerical method to analyze the cavity's use on the airfoil's trailing edge and the aerodynamic effects it generates. The type of airfoil used is NACA 4415. The variations in the Reynolds number examined in this study are 2×105 and 3×105. The governing equation is the Reynolds Averaged Navier-Stokes paired with the k-ε turbulence model. This study concludes that the cavity can increase Cl in the airfoil but cannot delay the stall. The increase in Cd is also a negative effect of using a cavity in the airfoil. The cavity can increase Cl by increasing the pressure on the lower side near the trailing edge. Meanwhile, the cavity increases Cd because it creates a separation of the fluid flow, forming a vortex when viewed in a streamlined form of fluid flow.

The The Effect of Micro Geometry with Various Forms as Passive Flow Control in NACA 4415 James Julian; Rizki Aldi Anggara; Fitri Wahyuni; Nely Toding Bunga
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi Volume 5 Nomor 2 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i2.4678

This study investigates the effect of variations in the micro geometry with various forms as passive flow control devices on the aerodynamic capability of the airfoil. Micro-cylinder, micro-slat, and micro-cube are installed close to the leading edge of the NACA 4415 airfoil as a micro geometric variation of passive flow control devices with a predetermined diameter of 3% c located at coordinates x= 0% c and y= 8 %c of the leading edge of the airfoil. The Reynolds number used in this study is Re = with AoA variations from 0°-30°. This study's results show a decrease in Cl of 12% with a micro-cylinder, 26% with a micro-slat, and 28% with a micro-cube. In addition, the Cd produced by using the variation of the device micro geometry has increased significantly. Thus, the final result is a lift-to-drag ratio of more petite than the without micro. In the streamlined contour shown when the airfoil is at a high angle of attack, the use of micro geometric variations of passive flow control devices can have an effect that causes reduced recirculation that occurs in the airfoil. However, the impact of these devices is not optimal, resulting in a reduction in the aerodynamic capability of the NACA 4415 airfoil.

Analysis of the Use of Bio Flap on NACA 4415 with Numerical Methods James Julian; Saphira Anggraita Siswanto; Fitri Wahyuni; Nely Toding Bunga
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa dan Inovasi Volume 5 Nomor 2 Tahun 2023
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v5i2.4768

This study was conducted using the Computational Fluid Dynamics (CFD) method using the Reynolds Averaged Navier Stokes (RANS) approach. The type of airfoil used in this study is the asymmetry NACA 4415 airfoil type. In this paper, computational tests were carried out on the airfoil with the addition of bionic flaps on its trailing edge. This study's update tests three variations of the Reynolds number: Re = 106, Re = 5 × 105, and Re = 3 × 105. The airfoil test was carried out at AoA 0°–25°. The addition of bionic flaps causes a decrease in lift performance at low AoA, but at high AoA, it can increase lift performance on airfoils. In addition, adding a bionic flap on the airfoil can delay the occurrence of a stall. At AoA 10°–13°, the Cd of the three variations of the Reynolds number experiences an increase in performance. Then, from this computational test, the resulting Coefficient moment (Cm) is a pitch down because the torque is below zero.

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