CFD simulation and parametric study of Rijke Tube

For the thermo-acoustic instabilities to be sustained in a Rijke Tube, the Rayleigh criterion has to be satisfied. However, there are many factors that can affect the acoustic pressure and temperature, resulting in a lack of reliable methods to predict the occurrence of thermal instabilities in comb...

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Main Author: Wong, Zhi Yao
Other Authors: Basman Elhadidi
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2020
Subjects:
Online Access:https://hdl.handle.net/10356/141085
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1410852023-03-04T19:36:21Z CFD simulation and parametric study of Rijke Tube Wong, Zhi Yao Basman Elhadidi Chan Wai Lee School of Mechanical and Aerospace Engineering chan.wl@ntu.edu.sg, mbasman@ntu.edu.sg Engineering::Mechanical engineering::Fluid mechanics Engineering::Aeronautical engineering For the thermo-acoustic instabilities to be sustained in a Rijke Tube, the Rayleigh criterion has to be satisfied. However, there are many factors that can affect the acoustic pressure and temperature, resulting in a lack of reliable methods to predict the occurrence of thermal instabilities in combustion chambers. In this report, a simulation is developed to investigate and analyse the thermo-acoustic instabilities in a Rijke Tube. The study is done to better understand the pressure and velocity fluctuations of a Rijke Tube and how different parameters in the simulation can affect the simulation outcome of the Rijke Tube. Ansys Fluent was used for this project to simulate the thermo-acoustic instability found in the Rijke Tube. Different turbulence models were tested for accuracy in simulating the conditions in a Rijke tube. Additionally, multiple parameters such as the boundary conditions of the farfield, material and boundary conditions of the tube, temperature of the heat source and the solving approach were varied. The outcomes of the simulations with different parameters were then compared and analysed. Bachelor of Engineering (Aerospace Engineering) 2020-06-04T01:37:46Z 2020-06-04T01:37:46Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/141085 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Mechanical engineering::Fluid mechanics
Engineering::Aeronautical engineering
spellingShingle Engineering::Mechanical engineering::Fluid mechanics
Engineering::Aeronautical engineering
Wong, Zhi Yao
CFD simulation and parametric study of Rijke Tube
description For the thermo-acoustic instabilities to be sustained in a Rijke Tube, the Rayleigh criterion has to be satisfied. However, there are many factors that can affect the acoustic pressure and temperature, resulting in a lack of reliable methods to predict the occurrence of thermal instabilities in combustion chambers. In this report, a simulation is developed to investigate and analyse the thermo-acoustic instabilities in a Rijke Tube. The study is done to better understand the pressure and velocity fluctuations of a Rijke Tube and how different parameters in the simulation can affect the simulation outcome of the Rijke Tube. Ansys Fluent was used for this project to simulate the thermo-acoustic instability found in the Rijke Tube. Different turbulence models were tested for accuracy in simulating the conditions in a Rijke tube. Additionally, multiple parameters such as the boundary conditions of the farfield, material and boundary conditions of the tube, temperature of the heat source and the solving approach were varied. The outcomes of the simulations with different parameters were then compared and analysed.
author2 Basman Elhadidi
author_facet Basman Elhadidi
Wong, Zhi Yao
format Final Year Project
author Wong, Zhi Yao
author_sort Wong, Zhi Yao
title CFD simulation and parametric study of Rijke Tube
title_short CFD simulation and parametric study of Rijke Tube
title_full CFD simulation and parametric study of Rijke Tube
title_fullStr CFD simulation and parametric study of Rijke Tube
title_full_unstemmed CFD simulation and parametric study of Rijke Tube
title_sort cfd simulation and parametric study of rijke tube
publisher Nanyang Technological University
publishDate 2020
url https://hdl.handle.net/10356/141085
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