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All Journal Jurnal Rekayasa Mesin
Imam Akbar
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Tridinanti, Palembang, Sumatra Selatan, Indonesia
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Efek Tortuositas pada Heatsink Berpori terhadap Perpindahan Panas Konveksi Alami Imam Akbar; Ahmad Malik Abdul Aziz; Hariman Al Faritzie; Dewi Rawani
Jurnal Rekayasa Mesin Vol. 23 No. 2 (2023): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v23i2.439

Abstract

This research aims to analyze the effect of tortuosity porous heatsink on natural convection heat transfer. Heatsink plays a crucial role in dissipating heat from electronic components, and optimizing heatsink design is essential for effective and efficient thermal management. In this study, heatsink structures including splitP, diamond, gyroid, and pin were created using generative design methods, and the relationship between tortuosity and heatsinks thermal performance was investigated through Computational Fluid Dynamics (CFD). The results show that an increase in tortuosity leads to a significant increase in surface area and pressure drop, with values ranging from 9298.48-12711.93 mm2 and 0.08701-0.09474 Pa, respectively. Additionally, tortuosity also exhibits a strong linear correlation with the Nusselt number, with value R2=0.88. As tortuosity increases, the Nusselt number decreases significantly from 18.04-9.90. In this research, we conclude that tortuosity is an important parameter that affects heatsink performance, and the TPMS structure we developed is a promising heatsink design candidate for thermal management devices. However, a balance needs to be sought between surface area, pressure drop, overall heat transfer, and other parameters such as pore size and interconnectivity to achieve optimal heatsink performance.
Analisa Pengaruh Jumlah dan Diameter Bola Penumbuk pada Ball Milling terhadap Ukuran Partikel Magnesium Bayu Segara; Imam Akbar; M A Ade Saputra
Jurnal Rekayasa Mesin Vol. 26 No. 1 (2026): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

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

Abstract

Magnesium merupakan logam ringan yang banyak digunakan pada industri material maju dan energi. Salah satu metode untuk memperkecil ukuran partikelnya adalah ball milling, yang dipengaruhi oleh jumlah dan diameter bola penumbuk. Penelitian ini bertujuan menganalisis pengaruh kedua parameter tersebut terhadap ukuran partikel magnesium menggunakan metode eksperimen dengan variasi jumlah dan diameter bola, sementara waktu milling dan kecepatan putar dijaga konstan.Hasil penelitian menunjukkan bahwa peningkatan jumlah bola penumbuk dan penggunaan diameter bola yang lebih besar menghasilkan ukuran partikel magnesium yang lebih kecil akibat meningkatnya energi dan frekuensi tumbukan. Kombinasi parameter tertentu memberikan hasil yang paling optimal. Dengan demikian, jumlah dan diameter bola penumbuk berpengaruh signifikan terhadap efektivitas proses ball milling dalam menghasilkan partikel magnesium yang lebih halus.
Co-Authors Ahmad Malik Abdul Aziz Bayu Segara Dewi Rawani Hariman Al Faritzie M A Ade Saputra