PENGARUH PERBEDAAN JUMLAH CONVEX-STRIPS VORTEX GENERATOR DALAM LAJU PERPINDAHAN PANAS

*Nurthariq Aditya Kusuma  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Syaiful Syaiful  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Bambang Yunianto  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia

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Abstract

Para peneliti telah memperhatikan peningkatan perpindahan panas pada heat exchanger yang menggunakan generator vortex. Akibatnya, tujuan dari penelitian ini adalah untuk melihat bagaimana jumlah convex-strips vortex generator mempengaruhi peningkatan perpindahan panas dan resistansi aliran pada heat exchanger. Pemodelan tiga dimensi dilakukan dengan jumlah strip convex yang berbeda dari 4 hingga 8, 12 hingga 16, 20 hingga 24, dan 28. Strip convex tersebut ditempatkan di sekitar pipa panas. Model turbulen k-ε digunakan untuk mensimulasikan aliran fluida pada rentang bilangan Reynolds dari 3.438 hingga 15.926. Hasil penelitian menunjukkan bahwa fin dengan 24 convex-strips menunjukkan laju perpindahan panas tertinggi sebesar 58,45% dibandingkan dengan  plain fin.

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Keywords: convex-strips; fin and tube; perpindahan panas; vortex generator
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