Studi Hidrodinamika Dan Parameter Mixing Time Pada Reaktor Biogas Dengan Side-Entering Mixer Berbasis Cfd

Susanti, Ari (2016) Studi Hidrodinamika Dan Parameter Mixing Time Pada Reaktor Biogas Dengan Side-Entering Mixer Berbasis Cfd. Masters thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Tangki berpengaduk dengan side-entering mixer banyak digunakan dalam berbagai aplikasi seperti dalam industri pengolahan limbah cair menjadi biogas. Penelitian ini bertujuan untuk mengetahui fenomena hidrodinamika dan pengaruh kinerja pencampuran berdasarkan ukuran diameter impeller, kecepatan putar impeller, jumlah blade impeller, dengan menghitung mixing time dalam sistem single-phase menggunakan Computational Fluid Dynamic (CFD). Dalam penelitian ini digunakan air. Ukuran tangki yakni berdiameter 40 cm dengan tinggi 60 cm. Pengaduk berdiameter 3 cm dan 4 cm dengan jumlah blade 4 dan 6 blade. Jenis impeller yang digunakan yakni Inclined Fan Turbine (IFT) 45˚. Kecepatan putar yang diterapkan yakni 100 rpm, 200 rpm, 300 rpm, dan 400 rpm. Model penting yang digunakan yakni k-ɛ standart dan Multiple Reference Frame (MFR). Hasil penelitian menunjukkan rate aliran discharge stream meningkat dengan bertambahnya kecepatan putar impeller dan semakin besarnya ukuran diameter impeller. Selain itu, semakin tinggi kecepatan putar maka semakin cepat mixing time tercapai ============================================================================================= Stirred tank with side-entering mixer is commonly used in a number of applications, such as in the liquid waste processing into biogas. This study aims to determine the phenomenon of hydrodynamic and the influence of diameter of tank, rotational speed, and number of impeller blades on mixing performance by calculating the mixing time with system of single-phase by modelling and simulation using Computational Fluid Dynamics ( CFD ). In this study, water was used as fluid. This simulation was carried out on the cylindrical vessel with diameter of 40 cm and 60 cm height, the impeller was 3 and 4 cm diameter for each 4 and 6 blades on 45˚ Inclined Fan Turbine ( IFT ) mixer. Speed of impeller was varied such as 100 rpm, 200 rpm, 300 rpm and 400 rpm . The important model used to design and conduct this CFD study are kepsilon standard and Multiple Reference Frame (MFR) from the impellers. The result show that rate of discharge stream raise with increasing of impeller speed and size of impeller diameter. Moreover, mixing time is achieved with increasing impeller speed

Item Type: Thesis (Masters)
Additional Information: RTK 620.106 4 Sus s
Uncontrolled Keywords: computational fluid dynamics, hidrodinamika, mixing time, sideentering mixer
Subjects: Q Science > QC Physics > QC151 Fluid dynamics
T Technology > TP Chemical technology > TP359 Biogas
Divisions: Faculty of Industrial Technology > Chemical Engineering > 24101-(S2) Master Thesis
Depositing User: EKO BUDI RAHARJO
Date Deposited: 03 Sep 2020 04:09
Last Modified: 03 Sep 2020 04:09
URI: https://repository.its.ac.id/id/eprint/81744

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