Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)

This thesis deals with the numerical study about the effect of different turbulent models on combustion chamber pressure during the event compression and combustion process using Computational Fluid Dynamic (CFD). The assessment is based on cylinder pressure and computational time predicted by the t...

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Main Author:	Mohd Nasruddin, Amir Nazri
Format:	Undergraduates Project Papers
Language:	English
Published:	2009
Subjects:	TA Engineering (General). Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/1166/ http://umpir.ump.edu.my/id/eprint/1166/ http://umpir.ump.edu.my/id/eprint/1166/1/CD4423.pdf

id	ump-1166
recordtype	eprints
spelling	ump-11662015-03-03T07:49:07Z http://umpir.ump.edu.my/id/eprint/1166/ Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD) Mohd Nasruddin, Amir Nazri TA Engineering (General). Civil engineering (General) This thesis deals with the numerical study about the effect of different turbulent models on combustion chamber pressure during the event compression and combustion process using Computational Fluid Dynamic (CFD). The assessment is based on cylinder pressure and computational time predicted by the turbulence models. The vital point for the study is the on effect of different turbulence models on simulating the critical process of combustion in cylinder. The most accurate and time efficient models is k-ω-sst. The predicted results produce 58.2358 % discrepancy in term of cylinder pressure. The model also predicted the shortest convergence time which is 1573 minute. The selection of the models must be right in using numerical modelling approach in order to fulfil three major criteria which are accuracy, computational time and cost. This study consists of numerical modelling by using Mitsubishi magma 4G15 as baseline engine design. Engine speed at 2000 rpm was selected as baseline for initial condition. This project simulates the compression and combustion process right after intake valve closed until exhaust opened. For numerical modelling approach, there were six turbulence models selected which are k-ϵ-standard, k-ϵ-RNG, k-ϵ-realizable, k-ωstandard, k-ω-SST, and RSM-Linear Pressure Strain. The pressure data for turbulent models validate by compared to the experimental data. However, there are discrepancies of the results due to improper boundary condition and inherit limitation of model. For further simulation of combustion process must consider detail mixture properties, detail boundary condition and model extension for better accuracy. 2009-11 Undergraduates Project Papers NonPeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1166/1/CD4423.pdf Mohd Nasruddin, Amir Nazri (2009) Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD). Faculty of Mechanical Engineering , Universiti Malaysia Pahang. http://iportal.ump.edu.my/lib/item?id=chamo:46444&theme=UMP2
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TA Engineering (General). Civil engineering (General)
spellingShingle	TA Engineering (General). Civil engineering (General) Mohd Nasruddin, Amir Nazri Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)
description	This thesis deals with the numerical study about the effect of different turbulent models on combustion chamber pressure during the event compression and combustion process using Computational Fluid Dynamic (CFD). The assessment is based on cylinder pressure and computational time predicted by the turbulence models. The vital point for the study is the on effect of different turbulence models on simulating the critical process of combustion in cylinder. The most accurate and time efficient models is k-ω-sst. The predicted results produce 58.2358 % discrepancy in term of cylinder pressure. The model also predicted the shortest convergence time which is 1573 minute. The selection of the models must be right in using numerical modelling approach in order to fulfil three major criteria which are accuracy, computational time and cost. This study consists of numerical modelling by using Mitsubishi magma 4G15 as baseline engine design. Engine speed at 2000 rpm was selected as baseline for initial condition. This project simulates the compression and combustion process right after intake valve closed until exhaust opened. For numerical modelling approach, there were six turbulence models selected which are k-ϵ-standard, k-ϵ-RNG, k-ϵ-realizable, k-ωstandard, k-ω-SST, and RSM-Linear Pressure Strain. The pressure data for turbulent models validate by compared to the experimental data. However, there are discrepancies of the results due to improper boundary condition and inherit limitation of model. For further simulation of combustion process must consider detail mixture properties, detail boundary condition and model extension for better accuracy.
format	Undergraduates Project Papers
author	Mohd Nasruddin, Amir Nazri
author_facet	Mohd Nasruddin, Amir Nazri
author_sort	Mohd Nasruddin, Amir Nazri
title	Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)
title_short	Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)
title_full	Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)
title_fullStr	Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)
title_full_unstemmed	Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)
title_sort	effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (cfd)
publishDate	2009
url	http://umpir.ump.edu.my/id/eprint/1166/ http://umpir.ump.edu.my/id/eprint/1166/ http://umpir.ump.edu.my/id/eprint/1166/1/CD4423.pdf
first_indexed	2023-09-18T21:54:04Z
last_indexed	2023-09-18T21:54:04Z
_version_	1777413961765879808

Effect of different turbulence models on combustion chamber pressure using computational fluid dynamic (CFD)

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