Pebriana, Rina and Fadly, Afilda Della (2015) Simulasi particle trajectory dari deposisi charged aerosol partices pada single treated substrate. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk untuk mengkaji proses
deposisi partikel bermuatan pada single substrate yang memiliki
perbedaan muatan elektrik potensial menggunakan simulasi
numeric dengan CFD (Computational Fluid Dynamics). Hasil
dari penelitian diharapkan dapat menentukan kondisi optimum
dengan memvariasikan berbagai kondisi yaitu : muatan pada
substrat dan jarak antara nozzle dan substrate, sehingga lintasan
partikel dapat diketahui.
Metode simulasi berbasis CFD digunakan karena deposisi
partikel pada treated substrate tidak dapat diprediksi. Sehingga,
memerlukan analisis secara modelling dengan menggunakan CFD
Fluent untuk mengamati lebih detail pola deposisi partikel
tersebut.
Simulasi ini menggunakan gambar dua dimensi dengan
panjang 70 mm dan lebar 30 mm. Inlet berupa nozzle dengan
ukuran 0,1 mm. Bahan yang digunakan pada penelitian ini adalah
charged aerosol particle SiO2 dan treated substrate berbahan
aluminium. Variabel yang digunakan adalah flowrate gas,
flowrate partikel, diameter partikel, ukuran outflow, dan jarak
antara nozzle dan substrat. Metodologi terdiri dari beberapa
tahapan yaitu: membuat model geometri menggunakan
DesignModeler®, membuat grid menggunakan Meshing®,
mengimpor grid ke dalam FLUENT, memilih formulasi solver, mengaktifkan Discrete Phase Model, menggunakan fungsi UDF
dengan memasukkan persamaan electric force, menentukan
material, kondisi operasi, dan parameter, perhitungan iterasi
simulasi CFD menggunakan FLUENT®. Selanjutnya
penyelesaian hasil yang diamati dalam proses deposisi partikel
pada treated substrat.
Hasil simulasi menunjukkan lebih banyak partikel yang
didapatkan dengan memperbesar flowrate gas dan flowrate
partikel. Namun, diameter partikel dan jarak antara nozzle dengan
substrat menunjukkan efek yang tidak signifikan terhadap vector
kecepatan, sedangkan ukuran outflow mempengaruhi vector
kecepatan. Kondisi optimum akhir simulasi yang diperoleh yaitu
pada flowrate gas 200 ml/jam, dengan flowrate partikel 1 ml/jam,
dengan jarak antara nozzle dengan substrat sebesar70 mm, dan
dimensi outflow sebesar 2.5mm. Dengan mengatur simulasi pada
kondisi tersebut, diperoleh 99% partikel bermuatan yang
terdeposisi pada treated substrate.
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The purpose of this research was to investigate deposition
of charged aerosol particles into the single substrate having
different levels of surface electric potential using numerical
simulation based on Computational Fluid Dynamic (CFD). The
result of this research was expected to determine optimum
conditions by varying several conditions insuch as: charged on
substrate and the distance between nozzle and substrate, so the
particle track can be determined.
Simulation method based on CFD was used because the deposition
of particles on the treated substrate has unpredictable patterns.
Thus, it requires analysis modeling using CFD based Fluent to
observe the pattern of deposition of the particles in detail.
This simulation using two-dimensional image with length 70 mm
and width 30 mm. 0.1 mm nozzle was used as inlet. Material used
in this study was SiO2 charged aerosol particles and aluminium as
substrate. The manipulated variables were gas flowrate, particle
flowrate, particle diameter, outflow size, and the distance between
nozzle and substrate. The methodology of this research included:
making the model geometry using DesignModeler®, making grid
using Meshing®, importing grid to FLUENT, choosing solver
formulation, activating Discrete Phase Model, using UDF function
by inserting electric force equation, determining material,
operating condition, and parameter, CFD using FLUENT® simulation iteration calculation. Furthermore, the completion of
the results observed in the process of deposition of particles on the
treated substrate.
The result showed that more particles were observed by enlarging
the gas and particle flowrate. However, particle diameter and the
the distance between nozzle and substrate showed insignificant
effect to vector velocity, while the outflow size affected vector
velocity. The optimum condition of this results was attained when
the gas flowrate, particle flowrate, the distance between nozzle and
substrate, and outflow size were 200 ml/hr, 1 ml/hr, 70 mm, and
2.5 mm, respectively. By setting simulation under these conditions,
almost 99% of the charged aerosol particles could be successfully
deposited on treated substrate.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSK 620.106 401 13 Peb s |
| Uncontrolled Keywords: | CFD, Flow, Partikel, UDF, Nozzle, Gas |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ935 Pipe--Fluid dynamics. Tubes--Fluid dynamics |
| Divisions: | Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis |
| Depositing User: | - Taufiq Rahmanu |
| Date Deposited: | 23 Apr 2019 04:26 |
| Last Modified: | 23 Apr 2019 04:26 |
| URI: | http://repository.its.ac.id/id/eprint/62803 |
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