Optimization of fluid characteristics in the main nozzle of an air-jet loom

Huang, X; Clemon, LM; Islam, MS; C. Saha, S

Optimization of fluid characteristics in the main nozzle of an air-jet loom

Huang, X Clemon, LM Islam, MS C. Saha, S

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Publisher:: SAGE PUBLICATIONS LTD
Publication Type:: Journal Article
Citation:: Textile Research Journal, 2022, 92, (3-4), pp. 525-538
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Huang, X
dc.contributor.author	Clemon, LM
dc.contributor.author	Islam, MS
dc.contributor.author	C. Saha, S
dc.date.accessioned	2023-03-17T05:17:45Z
dc.date.available	2023-03-17T05:17:45Z
dc.date.issued	2022-01-01
dc.identifier.citation	Textile Research Journal, 2022, 92, (3-4), pp. 525-538
dc.identifier.issn	0040-5175
dc.identifier.issn	1746-7748
dc.identifier.uri	http://hdl.handle.net/10453/167481
dc.description.abstract	As part of the propulsion system, the fluid dynamic features of the main nozzle can immediately affect the stability and efficiency of an air-jet loom. This study aims to optimize the fluid characteristics in the main nozzle of an air-jet loom. To investigate ways of weakening the effect of airflow congestion and backflow phenomenon occurring in the sudden expansion region, the computational fluid dynamics method is employed. Three-dimensional turbulence flow models for a regular main nozzle and 12 prototypes with different nozzle core tip geometry are built, simulated, and analyzed to get the optimum performance. Furthermore, a set of modified equations that consider the direction of airflow are proposed for better estimation of the friction force applied by the nozzle. The result shows that the nozzle core tip's geometry has a significant influence on the internal airflow, affecting the acceleration tube airflow velocity, turbulence intensity, and backflow strength of the sudden expansion region, and other critical fluid characteristics as well. Several proposed models have succeeded in reducing the backflow and outperforming the original design in many different aspects. Models A-60 and C-P, in particular, manage to increase the propulsion force by 37.6% and 20.2% in the acceleration tube while reducing the maximum backflow by 57.1% and 52.2%, respectively. These simulation results can provide invaluable information for the future optimization of the main nozzle.
dc.language	English
dc.publisher	SAGE PUBLICATIONS LTD
dc.relation.ispartof	Textile Research Journal
dc.relation.isbasedon	10.1177/00405175211039579
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0910 Manufacturing Engineering, 0912 Materials Engineering
dc.subject.classification	Polymers
dc.title	Optimization of fluid characteristics in the main nozzle of an air-jet loom
dc.type	Journal Article
utslib.citation.volume	92
utslib.for	0910 Manufacturing Engineering
utslib.for	0912 Materials Engineering
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CAM - Centre for Advanced Manufacturing
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2023-03-17T05:17:42Z
pubs.issue	3-4
pubs.publication-status	Published
pubs.volume	92
utslib.citation.issue	3-4

Abstract:

As part of the propulsion system, the fluid dynamic features of the main nozzle can immediately affect the stability and efficiency of an air-jet loom. This study aims to optimize the fluid characteristics in the main nozzle of an air-jet loom. To investigate ways of weakening the effect of airflow congestion and backflow phenomenon occurring in the sudden expansion region, the computational fluid dynamics method is employed. Three-dimensional turbulence flow models for a regular main nozzle and 12 prototypes with different nozzle core tip geometry are built, simulated, and analyzed to get the optimum performance. Furthermore, a set of modified equations that consider the direction of airflow are proposed for better estimation of the friction force applied by the nozzle. The result shows that the nozzle core tip's geometry has a significant influence on the internal airflow, affecting the acceleration tube airflow velocity, turbulence intensity, and backflow strength of the sudden expansion region, and other critical fluid characteristics as well. Several proposed models have succeeded in reducing the backflow and outperforming the original design in many different aspects. Models A-60 and C-P, in particular, manage to increase the propulsion force by 37.6% and 20.2% in the acceleration tube while reducing the maximum backflow by 57.1% and 52.2%, respectively. These simulation results can provide invaluable information for the future optimization of the main nozzle.

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http://hdl.handle.net/10453/167481