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Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar

The study represents the validation of one equation turbulence model (Spalart Allmaras) that incorporates fixed variables of exit Reynolds number is 2.8 x 10# and the exit isentropic Mach number is 0.79 on a turbine blade geometry. The computational simulation is done by ANSYS 16.2 with a minimum gr...

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Main Author: Samsuwar, Muhammad`Azim
Format: Thesis
Language:English
Published: 2019
Online Access:https://ir.uitm.edu.my/id/eprint/89188/1/89188.pdf
https://ir.uitm.edu.my/id/eprint/89188/
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spelling my.uitm.ir.891882024-08-19T03:03:14Z https://ir.uitm.edu.my/id/eprint/89188/ Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar Samsuwar, Muhammad`Azim The study represents the validation of one equation turbulence model (Spalart Allmaras) that incorporates fixed variables of exit Reynolds number is 2.8 x 10# and the exit isentropic Mach number is 0.79 on a turbine blade geometry. The computational simulation is done by ANSYS 16.2 with a minimum grid size of 2x 10$%mm using two different cases. For Case I the inlet is 140kPa for pressure and 280K for temperature whereas for Case II the inlet is 92.755kPa for pressure and 2.48.93K for temperature. The validation being done on dimensionless pressure, isentropic Mach number and Fast Fourier transformation (FFT) for both cases. The result of isentropic Mach number around the blade indicates very good agreement with the experiment. For frequency validation, the higher fluctuation on the trailing edge shows discrepancy about 9% with experiment results for Case I and 1% for Case II. Dimensionless pressure strongly disagrees with previous results. The modification done towards the standard one equation turbulence model for destruction parts by derivation of “d”. The results of hybrid equation show improvement on the dimensionless pressure and isentropic Mach number. 2019 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/89188/1/89188.pdf Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar. (2019) Masters thesis, thesis, Universiti Teknologi MARA (UiTM). <http://terminalib.uitm.edu.my/89188.pdf>
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
description The study represents the validation of one equation turbulence model (Spalart Allmaras) that incorporates fixed variables of exit Reynolds number is 2.8 x 10# and the exit isentropic Mach number is 0.79 on a turbine blade geometry. The computational simulation is done by ANSYS 16.2 with a minimum grid size of 2x 10$%mm using two different cases. For Case I the inlet is 140kPa for pressure and 280K for temperature whereas for Case II the inlet is 92.755kPa for pressure and 2.48.93K for temperature. The validation being done on dimensionless pressure, isentropic Mach number and Fast Fourier transformation (FFT) for both cases. The result of isentropic Mach number around the blade indicates very good agreement with the experiment. For frequency validation, the higher fluctuation on the trailing edge shows discrepancy about 9% with experiment results for Case I and 1% for Case II. Dimensionless pressure strongly disagrees with previous results. The modification done towards the standard one equation turbulence model for destruction parts by derivation of “d”. The results of hybrid equation show improvement on the dimensionless pressure and isentropic Mach number.
format Thesis
author Samsuwar, Muhammad`Azim
spellingShingle Samsuwar, Muhammad`Azim
Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar
author_facet Samsuwar, Muhammad`Azim
author_sort Samsuwar, Muhammad`Azim
title Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar
title_short Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar
title_full Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar
title_fullStr Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar
title_full_unstemmed Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar
title_sort validation of turbine blade geometry by using a modified equation spalart allmaras turbulent model / muhammad`azim samsuwar
publishDate 2019
url https://ir.uitm.edu.my/id/eprint/89188/1/89188.pdf
https://ir.uitm.edu.my/id/eprint/89188/
_version_ 1808975935610814464
score 13.251813

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