Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)

Thermoacoustic refrigerator system generates cooling from acoustic energy. Acoustic waves interact with stack plates in the resonator tube of a thermoacoustic refrigerator to induce a temperature difference the significance of which depends on the solid-fluid interactions. In this study, the flow fi...

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Main Author:	Ali, Irwan Shah
Format:	Thesis
Language:	English
Published:	2011
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.utm.my/id/eprint/28209/1/IrwanShahAliMFKM2011.pdf
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id	my-utm-ep.28209
record_format	uketd_dc
spelling	my-utm-ep.282092018-05-27T06:37:33Z Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV) 2011-05 Ali, Irwan Shah TJ Mechanical engineering and machinery Thermoacoustic refrigerator system generates cooling from acoustic energy. Acoustic waves interact with stack plates in the resonator tube of a thermoacoustic refrigerator to induce a temperature difference the significance of which depends on the solid-fluid interactions. In this study, the flow field at the end of the stack plates was investigated using Particle Image Velocimetry (PIV) method. Results were obtained from three stack configurations with different plate geometry. Effects of plate thickness and separation gap were determined by comparison of the velocity profile obtained from different configuration; separation gaps of 1mm and 3mm, and thickness of 1mm and 3mm. The ratio of separation gaps to viscous penetration depth was also determined to see the effect. For 1mm separation gaps, the ratio is about 6.27 and for 3mm it is 18.80. There are differences in the velocity within the separation gaps of stack plates. The velocity in the separation gap region for the 1mm is smaller compared to the 3mm separation gap due to the smaller ratio. A vortex is observed near the edge of the plate with thickness 3mm and there is no clear vortices seen near the stack for the 1mm thickness. The Reynolds number based on the plate thickness of 1mm and 3mm are 153.13 and 352.50 respectively. Wakes were observed behind the 3mm thickness stack plates but none behind the 1mm plate. 2011-05 Thesis http://eprints.utm.my/id/eprint/28209/ http://eprints.utm.my/id/eprint/28209/1/IrwanShahAliMFKM2011.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Mechanical Engineering Faculty of Mechanical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Ali, Irwan Shah Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)
description	Thermoacoustic refrigerator system generates cooling from acoustic energy. Acoustic waves interact with stack plates in the resonator tube of a thermoacoustic refrigerator to induce a temperature difference the significance of which depends on the solid-fluid interactions. In this study, the flow field at the end of the stack plates was investigated using Particle Image Velocimetry (PIV) method. Results were obtained from three stack configurations with different plate geometry. Effects of plate thickness and separation gap were determined by comparison of the velocity profile obtained from different configuration; separation gaps of 1mm and 3mm, and thickness of 1mm and 3mm. The ratio of separation gaps to viscous penetration depth was also determined to see the effect. For 1mm separation gaps, the ratio is about 6.27 and for 3mm it is 18.80. There are differences in the velocity within the separation gaps of stack plates. The velocity in the separation gap region for the 1mm is smaller compared to the 3mm separation gap due to the smaller ratio. A vortex is observed near the edge of the plate with thickness 3mm and there is no clear vortices seen near the stack for the 1mm thickness. The Reynolds number based on the plate thickness of 1mm and 3mm are 153.13 and 352.50 respectively. Wakes were observed behind the 3mm thickness stack plates but none behind the 1mm plate.
format	Thesis
qualification_level	Master's degree
author	Ali, Irwan Shah
author_facet	Ali, Irwan Shah
author_sort	Ali, Irwan Shah
title	Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)
title_short	Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)
title_full	Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)
title_fullStr	Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)
title_full_unstemmed	Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)
title_sort	analysis of stack geometry effects on thermoacoustic with particle image velocimetry (piv)
granting_institution	Universiti Teknologi Malaysia, Faculty of Mechanical Engineering
granting_department	Faculty of Mechanical Engineering
publishDate	2011
url	http://eprints.utm.my/id/eprint/28209/1/IrwanShahAliMFKM2011.pdf
_version_	1747815597981302784

Analysis of stack geometry effects on thermoacoustic with particle image velocimetry (PIV)

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