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

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
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spelling my-uitm-ir.891882024-04-23T00:53:57Z Validation of turbine blade geometry by using a modified equation Spalart Allmaras turbulent model / Muhammad`Azim Samsuwar 2019 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$%mm using two different cases. For Case I the inlet is 140kPa for pressure and 280K for temperature whereas for Case II the inlet is 92.755kPa for pressure and 2.48.93K for temperature. The validation being done on dimensionless pressure, isentropic Mach number and Fast Fourier transformation (FFT) for both cases. The result of isentropic Mach number around the blade indicates very good agreement with the experiment. For frequency validation, the higher fluctuation on the trailing edge shows discrepancy about 9% with experiment results for Case I and 1% for Case II. Dimensionless pressure strongly disagrees with previous results. The modification done towards the standard one equation turbulence model for destruction parts by derivation of “d”. The results of hybrid equation show improvement on the dimensionless pressure and isentropic Mach number. 2019 Thesis https://ir.uitm.edu.my/id/eprint/89188/ https://ir.uitm.edu.my/id/eprint/89188/1/89188.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Mechanical Engineering Mohd Noh, Mohd Hafiz
institution Universiti Teknologi MARA
collection UiTM Institutional Repository
language English
advisor Mohd Noh, Mohd Hafiz
description The study represents the validation of one equation turbulence model (Spalart Allmaras) that incorporates fixed variables of exit Reynolds number is 2.8 x 10# and the exit isentropic Mach number is 0.79 on a turbine blade geometry. The computational simulation is done by ANSYS 16.2 with a minimum grid size of 2x 10$%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
qualification_level Master's degree
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
granting_institution Universiti Teknologi MARA (UiTM)
granting_department Faculty of Mechanical Engineering
publishDate 2019
url https://ir.uitm.edu.my/id/eprint/89188/1/89188.pdf
_version_ 1804889805027278848

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