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Abstract
The slug flow phenomena are often encountered in various industrial applications such as petroleum, process, and power plant. The presence of slug flow should be avoided as it causes structural damage due to resonance, corrosion and pipes blast. From the view point of multiphase flow, the understanding of the slug initiation mechanism is very important in pipeline design. This research is conducted using horizontal transparent acrylic pipes with diameters of 50 mm with a variation on the superficial velocity of water between 0,1 m/s and 0,77 m/s and superficial velocity of air between 0,31 m/s and 6,2 m/s. In the present experimental study, the slug initiation mechanisms was explained by visual observation by using high speed video cameras. As the results, the slug flow initiation mechanism were clarified. Furthermore, the proposed of flow initiation map was introduced.
Highlights
The slug flow phenomena are often encountered in various industrial applications
The presence of slug flow should be avoided as it causes structural damage
the understanding of the slug initiation mechanism is very important in pipeline design
Summary
Sampai saat ini mekanisme pembentukan aliran slug pada pipa horizontal belum seluruhnya disepakati keakurasianya oleh para peneliti yang dapat dilihat dari hasil penelitian yang sama dan SENATIK Vol IV, ISBN 978-602-52742-0-6 Selanjutnya pada kecepatan superfisial air lebih tinggi JL ≥ 0,1 m/s, aliran plug dan slug mulai terbentuk. Pada kecepatan yang lebih tinggi JG = 2,88 m/s (Gambar 3) terlihat terdapat titik mula kenaikan interface antara udara dan air dan diikuti dengan terbentuknya gelombang yang belum menyentuh bagian atas pipa.
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