Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris

This study presents the validation of two equation turbulence model (k-epsilon) that incorporates fixed variables of exit Reynolds number 2.8 x 106 and 0.79 as exit isentropic Mach number on a turbine blade simulation by ANSYS software. The boundary condition of this study has been set to be 140kPa...

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Main Author:	Idris, Nurfazliawati
Format:	Thesis
Language:	English
Published:	2019
Online Access:	https://ir.uitm.edu.my/id/eprint/89197/1/89197.pdf
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id	my-uitm-ir.89197
record_format	uketd_dc
spelling	my-uitm-ir.891972024-04-22T07:19:24Z Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris 2019 Idris, Nurfazliawati This study presents the validation of two equation turbulence model (k-epsilon) that incorporates fixed variables of exit Reynolds number 2.8 x 106 and 0.79 as exit isentropic Mach number on a turbine blade simulation by ANSYS software. The boundary condition of this study has been set to be 140kPa and 280K as the inlet pressure and inlet temperature of the model. The validation of dimensionless pressure distribution, isentropic Mach number and Fast Fourier Transformation (FFT) has been used as parameter study. The result of isentropic Mach number around the blade has recently indicates very good agreement with the experiment while the result of FFT captures the pressure fluctuation at trailing edge of the turbine blade with the 4.6% of discrepancy with experiment result. For the dimensionless pressure distribution, the result has some discrepancy. Then, a new hybrid turbulence model has been done and the improvement of the result has been achieved. The result of hybrid equation shows that isentropic Mach number and dimensionless pressure distribution validation became closer to the experimental result compared to the unmodified equation. Thus, the calculation that should be used to obtain a better result is by isentropic relation for total inlet pressure as it could be farther result to the experiment if directly uses a total pressure. 2019 Thesis https://ir.uitm.edu.my/id/eprint/89197/ https://ir.uitm.edu.my/id/eprint/89197/1/89197.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Mechanical Engineering Mohd Noh, Mohd Hafiz
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Mohd Noh, Mohd Hafiz
description	This study presents the validation of two equation turbulence model (k-epsilon) that incorporates fixed variables of exit Reynolds number 2.8 x 106 and 0.79 as exit isentropic Mach number on a turbine blade simulation by ANSYS software. The boundary condition of this study has been set to be 140kPa and 280K as the inlet pressure and inlet temperature of the model. The validation of dimensionless pressure distribution, isentropic Mach number and Fast Fourier Transformation (FFT) has been used as parameter study. The result of isentropic Mach number around the blade has recently indicates very good agreement with the experiment while the result of FFT captures the pressure fluctuation at trailing edge of the turbine blade with the 4.6% of discrepancy with experiment result. For the dimensionless pressure distribution, the result has some discrepancy. Then, a new hybrid turbulence model has been done and the improvement of the result has been achieved. The result of hybrid equation shows that isentropic Mach number and dimensionless pressure distribution validation became closer to the experimental result compared to the unmodified equation. Thus, the calculation that should be used to obtain a better result is by isentropic relation for total inlet pressure as it could be farther result to the experiment if directly uses a total pressure.
format	Thesis
qualification_level	Master's degree
author	Idris, Nurfazliawati
spellingShingle	Idris, Nurfazliawati Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris
author_facet	Idris, Nurfazliawati
author_sort	Idris, Nurfazliawati
title	Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris
title_short	Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris
title_full	Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris
title_fullStr	Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris
title_full_unstemmed	Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris
title_sort	numerical simulation for high subsonic turbine blades by modified k-e turbulent models / nurfazliawati idris
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Mechanical Engineering
publishDate	2019
url	https://ir.uitm.edu.my/id/eprint/89197/1/89197.pdf
_version_	1804889805773864960

Numerical simulation for high subsonic turbine blades by modified k-e turbulent models / Nurfazliawati Idris

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