Wahono, Didit Setyo (2016) Studi Numerik Pompa Sentrifugal Tipe Impeller Backward Dengan Variasi Putaran Dan Debit Pompa. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Pompa adalah alat yang digunakan untuk memindahkan
fluida cair dari suatu tempat ke tempat yang lain, melalui sistem
perpipaan dengan cara menambahkan energi pada cairan yang
dipindahkan dan berlangsung secara kontinyu. Pompa dapat
diklasifikasikan menjadi beberapa kelas diantaranya pompa
sentrifugal, rotary, dan reciprocating. Pompa sentrifugal
memegang peranan yang sangat penting bagi berbagai industri
seperti industri air minum, minyak, petrokimia, pusat tenaga
listrik, dan lain sebagainya. Oleh karena itu telah banyak
dilakukan penelitian terhadap pompa sentrifugal.
Ilmu yang mempelajari metode penelitian secara numerik
adalah CFD (Computational Fluid Dynamic). Dalam tugas akhir
ini penelitian CFD pada pompa sentrifugal tipe impeller
backward dilakukan secara 2D dan 3D steady flow dengan
turbulent model k-epsilon standard. Impeller memiliki diameter
luar 120mm dan sudut β2 170o. Simulasi dilakukan dengan
memvariasikan putaran dan debit pompa. Kemudian hasil
simulasi akan divalidasi dan dibandingkan dengan hasil
eksperimen.
Hasil yang didapat dari penelitian secara numerik ini
adalah bahwa hasil simulasi numerik secara 2D jauh berbeda
dengan hasil eksperimen, sedangkan untuk simulasi 3D
mempunyai hasil yang representatif jika dibandingkan dengan
hasil eksperimen. Pada simulasi secara 3D, terjadi phenomena
backflow, dan olakan-olakan pada aliran fluida yang mengakibatkan kerugian hidrolis. Hasil simulasi 3D yang berupa
tekanan statis, head, dan daya hidrolis lebih kecil dari hasil
eksperimen dikarenakan oleh domain pemodelan simulasi 3D,
pemilihan boundary condition, bentuk, dan kerapatan dari
meshing
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Pump is a device used to move the liquid fluid from one
place to another through a piping system by adding energy to the
fluid that is removed and happened continuously. Pumps can be
classified into several classes such as centrifugal, rotary and
reciprocating pumps. Centrifugal pump plays a very important
role for various industries such as industrial water, oil,
petrochemical, power station, and etc. Therefore, there are many
studies have done on centrifugal pumps.
The subject that studies about the numerical research
method is CFD (computational Fluid Dynamic). In this thesis,
CFD research on centrifugal pump impeller backward type is
done in 2D steady flow with standard k-epsilon turbulence model.
Impeller have the outer diameter is 120mm and the angle of β2 is
170, the simulation is done by varying the rotation and pumping
discharge. Then, the simulation result will be validated and
compared to experimental result.
The result obtained from this numerical study is that 2D
numerical simulation result is much different from the
experimental result, while the 3D simulation has representative
result compared to experimental result. In the 3D simulation,
backflow phenomenon occurs and leakage in the fluid flow
resulting hydraulic loss, which in turn lowers the head value and
the hydraulic power of the simulation result. Therefore, the 3D
simulation result in the form of static pressure, head and
hydraulic power is smaller than the experimental result caused by domain modeling, boundary condition, shape, and density of
meshing
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 621.67 Wah s |
| Uncontrolled Keywords: | backward impeller, rotation, discharge pumping, centrifugal pump. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | Users 13 not found. |
| Date Deposited: | 22 Jun 2017 03:44 |
| Last Modified: | 27 Dec 2018 08:38 |
| URI: | http://repository.its.ac.id/id/eprint/41817 |
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