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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Rekayasa Mesin Enthalpy : Jurnal Ilmiah Mahasiswa Teknik Mesin Jurnal Rekayasa Mesin Jurnal Pengabdian Masyarakat Teknik Reswara: Jurnal Pengabdian Kepada Masyarakat Jurnal Teknik Mesin Sinergi Dedikasi: Jurnal Pengabdian Kepada Masyarakat Piston: Jurnal Teknologi Jurnal Medika: Medika Advance Sustainable Science, Engineering and Technology (ASSET)
La Ode Ichlas Syahrullah Yunus
Program Studi Teknik Mesin, Fakultas Sains Dan Teknologi, Universitas Sembilanbelas November Kolaka
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Analisis Perbandingan Kinerja Injektor Mesin Wartsila W20V34DF pada Beban 0 kW dan 3000 kW Menggunakan Simulasi CFD Budi Sutrisno; Dedy Ashari; La Ode Ichlas Syahrullah Yunus; La Ode Abdul Gamsir; Akhmad Fadli Ibrahim; Yuvita Satriani Djuli
Piston: Jurnal Teknologi Vol 10 No 1 (2025): June 2025
Publisher : Program Pendidikan Vokasi Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/pistonjt.v10i1.96

Abstract

Injector performance is a crucial factor in combustion efficiency and emission control in diesel engines, especially in power plant applications such as the Baubau 30MW PLTMG using the Wartsila W20V34DF engine. Pressure fluctuations, non-ideal fuel flow patterns, and uneven temperature distribution inside the injector can have a significant impact on the atomization and combustion process, which in turn affects overall engine performance. Therefore, a thorough understanding of the fluid dynamics inside the injector is essential for optimization and maintenance. This study aims to analyze the injector performance on the Wartsila W20V34DF engine by understanding the flow distribution, fluid velocity in the internal injector area using the Computational Fluid Dynamics (CFD) simulation method. Specifically, this study attempts to identify fuel flow characteristics and potential areas where injector performance may be less than optimal. Through CFD simulation using Solidworks, a detailed picture of the complex fuel flow pattern inside the injector is obtained. In the comparative analysis of the performance of the Wartsila engine injector at 0 kW and 3000 kW load conditions, CFD simulations were carried out with fuel flow velocity parameters, where the 0 kW load condition reached 4.1 m/s with 100 iterations and the 3000 kW speed reached 9.5 m/s with 100 iterations. Showing variations in the distribution of fluid velocity, especially around the injector hole, which is a crucial area for the fogging process. Areas with high velocities that support effective fogging were identified, but also flow patterns that can affect spray distribution. This analysis provides insight into how the internal design of the injector affects fluid dynamics, highlighting the importance of injector geometry for optimal performance. As a continuation of this study, it is recommended to conduct experimental validation of the CFD simulation results to verify the accuracy of the model. In addition, future research can consider factors such as variations in fuel composition, the effects of injector material degradation due to long-term use, and the interaction between injector spray and air in the combustion chamber to gain a more comprehensive understanding.
Implementasi K3 dan Pemanfaatan Mesin Pencacah Nilam dalam Meningkatkan Kesejahteraan Petani di Desa Waturempe Habriani Habriani; Ismiliani Saflia; Rajab Jandipo; La Ode Ichlas Syahrullah Yunus; Panci Yocing; Wa Ode safira Zainab; Zulfan Ramadhan
Jurnal Medika: Medika Vol. 4 No. 4 (2025)
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/yzk8qx65

Abstract

Occupational Safety and Health (OSH) is a critical aspect of agricultural activities that is often overlooked by farmers, particularly in rural communities. In Waturempe Village, West Muna Regency, most farmers depend on patchouli (Pogostemon cablin) as the primary raw material for essential oil production. However, manual patchouli processing not only results in low productivity and suboptimal yield quality but also exposes farmers to a high risk of workplace accidents. This community service project was designed to: (1) provide education and promote the implementation of OSH among farmers, (2) introduce and train farmers in the use of patchouli chopping machines as an appropriate technology, and (3) enhance farmer welfare by improving efficiency and productivity. The program was carried out through OSH awareness sessions, technical training on machine operation, and field assistance. The outcomes demonstrated an increase in farmers’ knowledge of OSH, improved skills in operating the machines, and up to a 60% increase in chopping efficiency compared to manual methods. Moreover, the more uniform chopping quality contributed to better essential oil quality. Overall, this initiative made a significant contribution to enhancing productivity, income potential, and the welfare of local farmers.
Dual-Chamber Microbial Fuel Cell for Bioelectricity Generation Using Coastal Sediments: A Case from Kendari Bay La Ode Ahmad; Muhammad Iqbal Sya'bani Istianandar; Wa Ode Novi Haryanti; Ahmad Zaeni; Alwahab; La Ode Ichlas Syahrullah Yunus; Yusuf Ahmad Husaeni; Robby Sudarman
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2086

Abstract

This study evaluates the potential of Kendari Bay sediment as an alternative source of electrical energy through the dual-chamber Sediment Microbial Fuel Cell (SMFC) technology. The research focused on sediment characterization, performance analysis using an aerator and KMnO₄, post-operation substrate changes, and the identification of electrogenic bacteria. The results showed that the sediment contained 43.24% moisture, 4.23% organic carbon, 1.08% total nitrogen, a C/N ratio of 3.92, pH 7.38, and conductivity of 11.56 mS. The SMFC generated a voltage of 0.404 V (aerator) and 1.628 V (KMnO₄), along with a current of 5.0 µA. After SMFC operation, organic content decreased, with 42.65% moisture, 4.06% organic carbon, 0.97% total nitrogen, a C/N ratio of 4.19, pH 7.86, and conductivity of 15.78 mS. Identified bacteria were Gram-positive Bacillus spp. These findings demonstrate that aerator and KMnO₄ application in dual-chamber SMFC significantly enhance energy conversion efficiency using marine sediment.
Sosialisasi Perawatan Lambung Kapal dan Mesin Kapal Pada Kapal Wisata Pokdarwis di Danau Napabale Kabupaten Muna Samaluddin samaluddin; Rahmawati Djunuda; Azhar Aras Mubarak; Riska Damayanti; La Ode Ichlas Syahrullah Yunus; Dedy Ashari; La Ode Abdul Gamsir; Muhammad Na'im Al Jum'ah; Netty Huzniati Andas; Muhamad Jalil Baari; Alfiah Alif; Salim
Jurnal Pengabdian Masyarakat Teknik Vol. 8 No. 2 (2026): Jurnal Pengabdian Masyarakat Teknik (JPMT)
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jpmt.8.2.55-62

Abstract

Kelompok masyarakat sadar berwisata (Pokdarwis) Napabale, sebagai salah satu pengelola wisata di Danau Napabale memiliki peranan yang sangat penting dalam menjaga dan mempertahankan kondisi fasilitas yang ada di Danau Napabale, termasuk kualitas kapal wisata. Oleh karena itu, perlu dilaksanakan kegiatan yang bisa meningkatkan pemahaman dan keterampilan anggota kelompok tersebut terhadap perawatan lambung dan mesin kapal guna meningkatkan efisiensi dan optimalisasi kinerjanya. Sosialisasi ini bertujuan untuk menambah pengetahuan bagi anggota kelompok pada proses perawatan lambung kapal dan mesin kapal. Metode sosialisasi dengan pemaparan materi langsung kepada mitra dalam bentuk ceramah dan diskusi serta pengaplikasian langsung pada lambung dan mesin kapal. Hasil kegiatan sosialisasi yakni bertambahnya pemahaman anggota kelompok tentang korosi pada kapal dan cara mencegah penjabaran korosi secara umum, keterampilan tentang menjaga performa mesin kapal agar mesin tetap berfungsi seperti semula, dan pemahaman mengenai sumber dan penyebab kerusakan pada kapal. Sosialisasi seperti ini diharapkan selalu dilaksanakan untuk tetap memberikan edukasi bagi anggota kelompok masyarakat yang mengelola kapal wisata di daerah wisata lain.
Co-Authors Ahmad Zaeni Akhmad Fadli Ibrahim Alfiah Alif Alwahab Ashari, Dedy Azhar Aras Mubarak Budi Sutrisno Darman Darman Dedy Ashari Dedy Ashari Eko, La Fitra, Ramad Arya Golok Jaya, La Ode Muhammad Habriani Habriani Habriani, Habriani Haluru, Asfa Ibrahim, Akhmad Fadli Ismiliani Saflia Kasim, Ma'ruf La Ode Abdul Gamsir La Ode Abdul Gamsir La Ode Ahmad Laode Abdul Gamsir mubarak, azhar aras Muhamad Jalil Baari Muhammad Iqbal Sya'bani Istianandar Muhammad Na'im Al Jum'ah Mutmainnah Muchtar Netty Huzniati Andas Panci Yocing Putri, Farika Tono Rahmawati Djunuda Rajab Jandipo Rima Ruktiari Riska Damayanti Robby Sudarman Salim Salim Salim, Mamat Maulana Samaluddin Samaluddin Sarimuddin, Sarimuddin Syah, Gahrudin Wa Ode Novi Haryanti Wa Ode safira Zainab Yocing, Panci Yusuf Ahmad Husaeni Yuvita Satriani Djuli Yuvita Satriani Djuli Zulfan Ramadhan