Simulasi particle trajectory dari deposisi charged aerosol partices pada single treated substrate

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. ========================================================================================================== 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.
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: https://repository.its.ac.id/id/eprint/62803

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