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All Journal R.E.M (Rekyasa Energi Manufaktur) Jurnal Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Jurnal Bakti Masyarakat Indonesia Logic : Jurnal Rancang Bangun Dan Teknologi Jurnal Marine Inside Applied Science Technology in Naval Engineering (ASTNE)
Mahdhudhu, Fathin Muhammad
Universitas Pembangunan Nasional Veteran Jakarta
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation Other

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Uji performa model mesin kapal dengan menggunakan bahan bakar terbarukan di berbagai konsentrasi Fathin Muhammad Mahdhudhu; Muhammad Izul A’dhom
Journal Marine Inside Vol. 6 No. 2 (2024)
Publisher : Politeknik Pelayaran Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62391/ejmi.v6i2.110

Abstract

Soy methyl ester merupakan salah satu contoh bahan bakar hayati (biofuel) yang memiliki potensi besar sebagai pengganti atau tambahan bahan bakar diesel. Biofuel adalah jenis bahan bakar yang berasal dari sumber organik, baik dalam bentuk cair, padat, maupun gas. Penelitian ini bertujuan untuk menganalisis performa dan efisiensi penggunaan bahan bakar diesel dan soy methyl ester. Analisis dilakukan pada sistem permesinan Kirloskar AV1 dengan menggunakan bahan bakar diesel dan soy methyl ester, melalui simulasi menggunakan perangkat lunak Diesel RK. Penelitian ini memfokuskan pada empat parameter utama, yaitu daya mesin, konsumsi bahan bakar, tekanan rata-rata efektif rem (brake mean effective pressure), dan efisiensi mesin piston. Hasil penelitian menunjukkan bahwa penambahan soy methyl ester menyebabkan penurunan daya mesin, tekanan rata-rata efektif rem, dan efisiensi mesin piston. Namun, peningkatan konsumsi bahan bakar terlihat sebagai tren yang konsisten ketika soy methyl ester ditambahkan.
Investigation of Bluff Body Shape Variation on Enhancing Heat Transfer Performance of Backward-Facing Step Flow Fitri Wahyuni; Rizki Aldi Anggara; James Julian; Riki Hendra Purba; Fathin Muhammad Mahdhudhu; Elvi Armadani; Nely Toding Bunga
Jurnal ASIIMETRIK Jurnal Ilmiah Rekayasa & Inovasi Volume 8 Number 2 (2026)
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v8i2.10260

Abstract

The control of flow separation phenomenon is a challenge that has attracted much attention from researchers in the context of heat and mass transfer. This phenomenon negatively affects heat transfer performance in thermal management applications. Flow control devices play a crucial role in minimizing the effects of flow separation. One of the fundamental geometries that supports understanding in flow separation control is the backward-facing step. Therefore, this study aims to investigate the utilization of bluff body shape variations, including cube, cylinder, and diamond shapes, as passive flow control devices on heat transfer performance in backward-facing step flow. The present study used a Computational Fluid Dynamics solver, followed by a variation of the Reynolds number, 50 ≤ Re ≤ 400. Computational results show that the bluff body significantly reduces the primary recirculation zone and compresses the thermal boundary layer, strengthening the temperature gradient and improving the heat transfer rate. The cube variation demonstrates the optimal thermal performance, exhibiting an augmentation in the average Nusselt number of up to 28.15% at Re = 400, resulting the highest overall Performance Evaluation Criterion.
Co-Authors Adi Winarta, Adi Aldi Raditya Adriansyah Bima Rakha Adhitama Bunga, Nely Toding Choirul Anam Christian Jovie Yudhananta daffa, Fatih izzudin Elvi Armadani Fakhri Akbar Ayub Fathan Mubina Denu Fitri Wahyuni Fitri Wahyuni Fitri Wahyuni James Julian Lumbantoruan, Regina Natalindah Muhammad Akmal Apriansyah Efendy Muhammad Ivan Kurniawan Muhammad Izul A’dhom Nabillah Jasmine Anugrahputri Nisa, Rasya Aulia Nathania Raffi Indrajati Rainer Samuel Fourlando Rasya Aulia Nathania Nisa Riki Hendra Purba Rizki Aldi Anggara Saphira Anggraita Siswanto