Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan

This thesis presents the evaluation of non-radial fiber turbine. The turbine adapted to an electrical turbo comporting (ETC) for recovering waste energy in the internal combustion engine. The ETC was designed to produce 1KW of power, rotate at 50000 rpm and expand the pressure ratio of 1.1. Th...

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Main Author:	Ridzuan, Siti Nor Syazwani
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Mechanical and electrical engineering combined
Online Access:	https://ir.uitm.edu.my/id/eprint/60042/1/60042.pdf
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spelling	my-uitm-ir.600422022-05-20T12:05:15Z Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan 2020-05 Ridzuan, Siti Nor Syazwani Mechanical and electrical engineering combined Mechanics applied to machinery. Dynamics This thesis presents the evaluation of non-radial fiber turbine. The turbine adapted to an electrical turbo comporting (ETC) for recovering waste energy in the internal combustion engine. The ETC was designed to produce 1KW of power, rotate at 50000 rpm and expand the pressure ratio of 1.1. The pressure ratio for the off-design operations was limited between 1.05 and 1.25. The turbine cannot operate higher than 1.25 due to choking problem. Limitation of the current design caused the operation of the LPT to produce chocked flow at certain mass flow rate and the efficiency significant dropped when the turbine was operated at pressure ratio 1.25. The flow field of the non-radial fiber turbine (NRFT) was studied by adjusting the exit camberlines which were lean backward swept and forward swept from the base design of non-radial fiber element. The data were collected through numerical and experimental analyses by using cold flow testing facility. The low pressure turbine (LPT) analysis was done by using computational fluid dynamic (CFD) simulation for single passage. The three dimensional turbulence fluid flow motion is described by using the Reynolds-Averaged Navier-Stokes equations (RANS) in the CFD modelling. The k- turbulence model is used in this study to model the Reynolds stresses. The result for the numerical analysis was compared with the baseline design by analysing the performance of efficiency and swallow capacity of the LPT. The flow field analysis is discussed in order to investigate the entropy generated at different exit angles. According to the validation data that have been done using CFD baseline with the experimental it is shown that the efficiency data for the velocity ratio under 0.7 with Relative standard deviation of 0.37. The turbine performances for the backswept design has showed an increment of 2% for the total-to-static efficiency and higher swallow capacity at the PR=1.25. This shows that the backswept design has a better design than the baseline and forward swept design. Base on the current outcomes the backswept have shown the highest efficiency 0.787 at PR 1.05-1.11 but increased in entropy generated due to increase of the temperature and decreased of pressure at the outlet as it approaching the higher mass flow rate. The flow field analysis study shows at the mid-section of the blade which is 0.5 of the wise-span the flow were chocking as the flow intake for the backswept are higher compared to forward swept once it passes through the mid place the exit flow not constant and make the velocity curl are reduces that lead to entropy increased. 2020-05 Thesis https://ir.uitm.edu.my/id/eprint/60042/ https://ir.uitm.edu.my/id/eprint/60042/1/60042.pdf text en public masters Universiti Teknologi MARA Faculty of Mechanical Engineering Mamat, Aman Mohd Ihsan (Associate Professor Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Mamat, Aman Mohd Ihsan (Associate Professor Dr.)
topic	Mechanical and electrical engineering combined Mechanical and electrical engineering combined
spellingShingle	Mechanical and electrical engineering combined Mechanical and electrical engineering combined Ridzuan, Siti Nor Syazwani Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan
description	This thesis presents the evaluation of non-radial fiber turbine. The turbine adapted to an electrical turbo comporting (ETC) for recovering waste energy in the internal combustion engine. The ETC was designed to produce 1KW of power, rotate at 50000 rpm and expand the pressure ratio of 1.1. The pressure ratio for the off-design operations was limited between 1.05 and 1.25. The turbine cannot operate higher than 1.25 due to choking problem. Limitation of the current design caused the operation of the LPT to produce chocked flow at certain mass flow rate and the efficiency significant dropped when the turbine was operated at pressure ratio 1.25. The flow field of the non-radial fiber turbine (NRFT) was studied by adjusting the exit camberlines which were lean backward swept and forward swept from the base design of non-radial fiber element. The data were collected through numerical and experimental analyses by using cold flow testing facility. The low pressure turbine (LPT) analysis was done by using computational fluid dynamic (CFD) simulation for single passage. The three dimensional turbulence fluid flow motion is described by using the Reynolds-Averaged Navier-Stokes equations (RANS) in the CFD modelling. The k- turbulence model is used in this study to model the Reynolds stresses. The result for the numerical analysis was compared with the baseline design by analysing the performance of efficiency and swallow capacity of the LPT. The flow field analysis is discussed in order to investigate the entropy generated at different exit angles. According to the validation data that have been done using CFD baseline with the experimental it is shown that the efficiency data for the velocity ratio under 0.7 with Relative standard deviation of 0.37. The turbine performances for the backswept design has showed an increment of 2% for the total-to-static efficiency and higher swallow capacity at the PR=1.25. This shows that the backswept design has a better design than the baseline and forward swept design. Base on the current outcomes the backswept have shown the highest efficiency 0.787 at PR 1.05-1.11 but increased in entropy generated due to increase of the temperature and decreased of pressure at the outlet as it approaching the higher mass flow rate. The flow field analysis study shows at the mid-section of the blade which is 0.5 of the wise-span the flow were chocking as the flow intake for the backswept are higher compared to forward swept once it passes through the mid place the exit flow not constant and make the velocity curl are reduces that lead to entropy increased.
format	Thesis
qualification_level	Master's degree
author	Ridzuan, Siti Nor Syazwani
author_facet	Ridzuan, Siti Nor Syazwani
author_sort	Ridzuan, Siti Nor Syazwani
title	Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan
title_short	Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan
title_full	Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan
title_fullStr	Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan
title_full_unstemmed	Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan
title_sort	non-radial fiber turbine performance for low pressure turbine via cfd and experimental (cold flow) / siti nor syazwani ridzuan
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Mechanical Engineering
publishDate	2020
url	https://ir.uitm.edu.my/id/eprint/60042/1/60042.pdf
_version_	1783735073978187776

Non-radial fiber turbine performance for low pressure turbine via Cfd and experimental (cold flow) / Siti Nor Syazwani Ridzuan

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