Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar

Swirl effervescent atomizer consists of a combined atomization mechanism of swirl and effervescent atomization. Despite of the advantages and potential of various applications, this type of atomizer was not widely used. This is due to the lack of extensive studies on the external and internal flow o...

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Main Author:	Abdul Ghaffar, Zulkifli
Format:	Thesis
Language:	English
Published:	2015
Online Access:	https://ir.uitm.edu.my/id/eprint/17814/2/TM_ZULKIFLI%20ABDUL%20GHAFFAR%20EM%2015_5.pdf
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id	my-uitm-ir.17814
record_format	uketd_dc
spelling	my-uitm-ir.178142022-04-18T05:44:34Z Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar 2015-08 Abdul Ghaffar, Zulkifli Swirl effervescent atomizer consists of a combined atomization mechanism of swirl and effervescent atomization. Despite of the advantages and potential of various applications, this type of atomizer was not widely used. This is due to the lack of extensive studies on the external and internal flow of this atomizer. Therefore, there is a need to understand the behaviour of the external and internal flow of this atomizer. In this study, the atomizer was designed, fabricated and later tested with water as the working fluid and nitrogen gas as the atomizing gas. An experimental test rig was built to evaluate the relation of swirl-generating vane angle, gas-to-liquid ratio (GLR) and discharge orifice diameter with spray angle, breakup length and gas core diameter respectively. To ensure optimization of experiment, Box-Behnken design of experiment was applied. High-speed shadowgraph was utilized during the recordings of resultant spray patterns and internal flow structure. The acquired images were analyzed using image processing software. Spray angle increases with swirl-generating vane angle and orifice diameter but unchanged with GLR. Increased of every independent parameters shortened the spray breakup and enlarged the gas core diameter but the GLR produced the most optimum results. The maximum spray angle is 28° which achieved from the interaction between the swirl-generating vane angle and discharge orifice diameter. Shortest breakup length (6mm) obtained with swirl-generating vane angle and GLR interact at the highest levels of both parameters. Gas core diameter expanded by 0.12mm with the interaction of the swirl-generating vane angle and discharge orifice diameter. 2015-08 Thesis https://ir.uitm.edu.my/id/eprint/17814/ https://ir.uitm.edu.my/id/eprint/17814/2/TM_ZULKIFLI%20ABDUL%20GHAFFAR%20EM%2015_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Mechanical Engineering
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
description	Swirl effervescent atomizer consists of a combined atomization mechanism of swirl and effervescent atomization. Despite of the advantages and potential of various applications, this type of atomizer was not widely used. This is due to the lack of extensive studies on the external and internal flow of this atomizer. Therefore, there is a need to understand the behaviour of the external and internal flow of this atomizer. In this study, the atomizer was designed, fabricated and later tested with water as the working fluid and nitrogen gas as the atomizing gas. An experimental test rig was built to evaluate the relation of swirl-generating vane angle, gas-to-liquid ratio (GLR) and discharge orifice diameter with spray angle, breakup length and gas core diameter respectively. To ensure optimization of experiment, Box-Behnken design of experiment was applied. High-speed shadowgraph was utilized during the recordings of resultant spray patterns and internal flow structure. The acquired images were analyzed using image processing software. Spray angle increases with swirl-generating vane angle and orifice diameter but unchanged with GLR. Increased of every independent parameters shortened the spray breakup and enlarged the gas core diameter but the GLR produced the most optimum results. The maximum spray angle is 28° which achieved from the interaction between the swirl-generating vane angle and discharge orifice diameter. Shortest breakup length (6mm) obtained with swirl-generating vane angle and GLR interact at the highest levels of both parameters. Gas core diameter expanded by 0.12mm with the interaction of the swirl-generating vane angle and discharge orifice diameter.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Abdul Ghaffar, Zulkifli
spellingShingle	Abdul Ghaffar, Zulkifli Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar
author_facet	Abdul Ghaffar, Zulkifli
author_sort	Abdul Ghaffar, Zulkifli
title	Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar
title_short	Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar
title_full	Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar
title_fullStr	Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar
title_full_unstemmed	Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar
title_sort	investigation of swirl effervescent atomization using design of experiment and photographic-based technique / zulkifli abdul ghaffar
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Mechanical Engineering
publishDate	2015
url	https://ir.uitm.edu.my/id/eprint/17814/2/TM_ZULKIFLI%20ABDUL%20GHAFFAR%20EM%2015_5.pdf
_version_	1783733605642534912

Investigation of swirl effervescent atomization using design of experiment and photographic-based technique / Zulkifli Abdul Ghaffar

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