Simatupang, Joshua Kevin Geraldy (2021) Analisa Numerik Aliran Sistem Perpipaan dengan Variasi Diameter Sambungan Pipa Menggunakan Model Turbulensi k-ε. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Aliran fluida air di sepanjang sistem perpipaan mengalami kerugian selama proses pengaliran air, hal ini dikenal sebagai head loss. Head loss disebabkan oleh beberapa faktor, antara lain: gaya gesek aliran terhadap dinding pipa, perubahan arah aliran, dan perubahan momentum aliran. Instalasi perpipaan pada penelitian ini menyerupai instalasi perpipaan pada stasiun pompa yang terdiri dari: diffuser, elbow, t-junction, dan multi-inlet. Adapun variasi yang diberikan adalah variasi ukuran diameter percabangan dan variasi operasi. Penelitian ini bertujuan untuk mengetahui pengaruh ukuran diameter percabangan pipa dan pengaruh pola operasi terhadap penurunan tekanan, tekanan total, dan kecepatan. Penelitian dilakukan dengan simulasi yang diselesaikan oleh perhitungan numerik serta divalidasikan dengan perhitungan analitis. Pembuatan domain dan meshing dilakukan dengan software ANSYS GAMBIT 2.4, sedangkan proses simulasi menggunakan software ANSYS FLUENT 19.2. Variasi ukuran diameter percabangan sebesar: 0,3 m, 0,4 m, dan 0,5 m. Variasi pola operasi berupa pengoperasian empat pompa atau tiga pompa dengan besar debit yang sama pada outlet. Pada operasi empat pompa kecepatan pada inlet diatur sebesar 4,65 m/s sedangkan pada tiga pompa sebesar 6,2 m/s. Berdasarkan hasil simulasi didapatkan bahwa total pressure terbesar terjadi pada model 0,5 m, dan yang terkecil pada model 0,4 mm. Sedangkan pada simulasi variasi pola operasi, operasi empat pompa menghasilkan penurunan total pressure lebih kecil dibandingkan operasi tiga pompa.
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The fluid flow of water along the piping system experiences losses during the water flow process, this is known as head loss. Head loss is caused by several factors, including: frictional force of flow against the pipe wall, changes in flow direction, and changes in flow momentum. The piping installation in this study resembles a piping installation at a pump station consisting of: diffuser, elbow, t-junction, and multiple inlet. The variations given are variations in the size of the branch diameter and variations in operation. This study aims to determine the effect of the diameter of the branching pipe and the effect of the operating pattern on the pressure drop, total pressure, and velocity. The research was carried out by simulation which was completed by numerical calculations and validated by analytical calculations. Domain creation and meshing are done with ANSYS GAMBIT 2.4 software, while the simulation process uses ANSYS FLUENT 19.2 software. Variations in the size of the branch diameter are: 0.3 m, 0.4 m, and 0.5 m. Variations in operating patterns in the form of the operation of four pumps or three pumps with a same flow rate at outlet. In the operation of four pumps the velocity at the inlet is set at 4.65 m/s while for three pumps it is 6.2 m/s. Based on the simulation results, it is found that the largest total pressure occurs in the 0.5 m model, and the smallest in the 0.4 mm model. While in the simulation of operating pattern variations, the operation of four pumps produces a smaller total pressure drop than the operation of three pumps.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | diameter pipe fittings, head loss, pipping installation, diameter sambungan pipa, head Loss, instalasi Perpipaan |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA492.W4 Welded joints T Technology > TJ Mechanical engineering and machinery > TJ935 Pipe--Fluid dynamics. Tubes--Fluid dynamics |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Joshua Kevin Geraldy Simatupang |
| Date Deposited: | 15 Aug 2021 03:36 |
| Last Modified: | 15 Aug 2021 03:36 |
| URI: | http://repository.its.ac.id/id/eprint/86717 |
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