Salihat, Esfaning and Tikasari, Rachma (2015) Simulasi karakteristik hydrodinamika pada pulse combustor berbasis CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Penelitian ini bertujuan untuk mengetahui pengaruh inlet
pulse dan inlet konstan terhadap karakteristik pembakaran, serta
pengaruh excess air dan geometri pulse combustor terhadap
karakteristik dan performa pembakaran yang terjadi pada pulse
combustor berbasis CFD (Computational Fluid Dynamics)
menggunakan FLUENT melalui analisa temperatur, tekanan, dan
kecepatan aliran.
Metode simulasi berbasis CFD digunakan karena sulitnya
mengamati mekanisme pulse combustion yang sangat kompleks.
Geometri pulse combustor yang digunakan berbentuk silinder
dengan panjang 136 dan 250 mm, inlet dengan diameter 4 mm,
dan outlet dengan diameter 20 dan 10 mm. Bahan yang digunakan
pada penelitian ini adalah udara dan propana pada temperatur
27oC dan tekanan 1 atm. Variabel yang digunakan untuk analisa
karakteristik pembakaran adalah inlet pulse dan inlet konstan,
sedangkan untuk analisa karakteristik pembakaran pulse adalah
excess air dan geometri pulse combustor. Metodologi yang
dilakukan meliputi beberapa tahapan diantaranya: membuat
model geometri dan grid-nya, menentukan model, kondisi
operasi, kondisi batas, parameter, dan penyelesaian hasil yang
diamati dalam proses pembakaran pada pulse combustor.
Hasil penelitian menunjukkan bahwa pembakaran dengan
inlet pulse memberikan hasil yang efektif dan efisien
dibandingkan dengan inlet konstan. Semakin tinggi excess air akan menurunkan suhu hasil pembakaran dan meningkatkan
amplitudo tekanan. Geometri pulse combustor dengan luas
penampang area perpindahan panas yang besar memberikan hasil
pembakaran yang semakin efektif.
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The purpose of this research is to study the affect of pulse
and constant inlet for combustion characteristics, and also the
affect of excess air and pulse combustor geometry for combustion
characteristics and performances on pulse combustor based on
CFD (Computational Fluid Dynamics) using FLUENT through
temperature, pressure, and fluid velocity analysis.
Simulation method based on CFD (Computational Fluid
Dynamics) is used because it is difficult to observe the complex
mechanism of pulse combustion. Pulse combustors geometry that
used in this research is cylinder which has length 136 and 250
mm, inlet with diameter 4 mm, and outlet with diameter 20 and 10
mm. The material used in this research is air and propane at
temperature 27oC and pressure 1 atm. Variables which applied to
analyze combustion characteristics are pulse and constant inlet,
and to analyze pulse combustion characteristics are excess air
and pulse combustor geometry. The methodology that will be
conducted includes some stages: designing of geometry model
and its grid, determining of model used, operating condition,
boundary condition, parameter, and solving the simulation of
pulse combustor.
The result show that combustion with pulse inlet give
more effective and efficient combustion performances than
constant inlet. The outlet temperature of combustion was decreased and the pressure amplitude was increased with the
increase of the excess air. Pulse combustor geometry with large
heat transfer area give more effective combustion performances.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSK 620.106 4 Sal s |
| Uncontrolled Keywords: | CFD; pulse combustion; geometri pulse combustor; karakteristik hidrodinamika ========================================================================================= CFD; pulse combustion; pulse combustor geometry; hydrodynamic characteristics |
| Subjects: | Q Science > QA Mathematics > QA911 Fluid dynamics. Hydrodynamics 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: | 02 Apr 2019 03:14 |
| Last Modified: | 02 Apr 2019 03:14 |
| URI: | http://repository.its.ac.id/id/eprint/62679 |
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