Staff View: Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler

Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler

This paper presents a cold flow simulation study of a small gas turbine combustor performed using laboratory scale test rig. The main objective of this investigation is to obtain physical insight of the main vortex, responsible for the efficient mixing of fuel and air. Such models are necessary for...

Full description

Saved in:

Bibliographic Details
Main Authors:	Ahmed Eldrainy, Yehia Abdel Monem, Mohd. Jaafar, Mohammad Nazri, Mat Lazim, Tholudin
Format:	Article
Published:	World Academy of Science, Engineering and Technology (W A S E T) 2011
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/44788/
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.utm.44788
record_format	eprints
spelling	my.utm.447882017-09-13T04:12:50Z http://eprints.utm.my/id/eprint/44788/ Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler Ahmed Eldrainy, Yehia Abdel Monem Mohd. Jaafar, Mohammad Nazri Mat Lazim, Tholudin QC Physics This paper presents a cold flow simulation study of a small gas turbine combustor performed using laboratory scale test rig. The main objective of this investigation is to obtain physical insight of the main vortex, responsible for the efficient mixing of fuel and air. Such models are necessary for predictions and optimization of real gas turbine combustors. Air swirler can control the combustor performance by assisting in the fuel-air mixing process and by producing recirculation region which can act as flame holders and influences residence time. Thus, proper selection of a swirler is needed to enhance combustor performance and to reduce NOx emissions. Three different axial air swirlers were used based on their vane angles i.e., 30°, 45°, and 60°. Three-dimensional, viscous, turbulent, isothermal flow characteristics of the combustor model operating at room temperature were simulated via Reynolds- Averaged Navier-Stokes (RANS) code. The model geometry has been created using solid model, and the meshing has been done using GAMBIT preprocessing package. Finally, the solution and analysis were carried out in a FLUENT solver. This serves to demonstrate the capability of the code for design and analysis of real combustor. The effects of swirlers and mass flow rate were examined. Details of the complex flow structure such as vortices and recirculation zones were obtained by the simulation model. The computational model predicts a major recirculation zone in the central region immediately downstream of the fuel nozzle and a second recirculation zone in the upstream corner of the combustion chamber. It is also shown that swirler angles changes have significant effects on the combustor flowfield as well as pressure losses. World Academy of Science, Engineering and Technology (W A S E T) 2011 Article PeerReviewed Ahmed Eldrainy, Yehia Abdel Monem and Mohd. Jaafar, Mohammad Nazri and Mat Lazim, Tholudin (2011) Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler. Proceedings of World Academy of Science, Engineering and Technology, 74 . pp. 977-983. ISSN 2070-3740
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
topic	QC Physics
spellingShingle	QC Physics Ahmed Eldrainy, Yehia Abdel Monem Mohd. Jaafar, Mohammad Nazri Mat Lazim, Tholudin Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
description	This paper presents a cold flow simulation study of a small gas turbine combustor performed using laboratory scale test rig. The main objective of this investigation is to obtain physical insight of the main vortex, responsible for the efficient mixing of fuel and air. Such models are necessary for predictions and optimization of real gas turbine combustors. Air swirler can control the combustor performance by assisting in the fuel-air mixing process and by producing recirculation region which can act as flame holders and influences residence time. Thus, proper selection of a swirler is needed to enhance combustor performance and to reduce NOx emissions. Three different axial air swirlers were used based on their vane angles i.e., 30°, 45°, and 60°. Three-dimensional, viscous, turbulent, isothermal flow characteristics of the combustor model operating at room temperature were simulated via Reynolds- Averaged Navier-Stokes (RANS) code. The model geometry has been created using solid model, and the meshing has been done using GAMBIT preprocessing package. Finally, the solution and analysis were carried out in a FLUENT solver. This serves to demonstrate the capability of the code for design and analysis of real combustor. The effects of swirlers and mass flow rate were examined. Details of the complex flow structure such as vortices and recirculation zones were obtained by the simulation model. The computational model predicts a major recirculation zone in the central region immediately downstream of the fuel nozzle and a second recirculation zone in the upstream corner of the combustion chamber. It is also shown that swirler angles changes have significant effects on the combustor flowfield as well as pressure losses.
format	Article
author	Ahmed Eldrainy, Yehia Abdel Monem Mohd. Jaafar, Mohammad Nazri Mat Lazim, Tholudin
author_facet	Ahmed Eldrainy, Yehia Abdel Monem Mohd. Jaafar, Mohammad Nazri Mat Lazim, Tholudin
author_sort	Ahmed Eldrainy, Yehia Abdel Monem
title	Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
title_short	Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
title_full	Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
title_fullStr	Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
title_full_unstemmed	Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
title_sort	cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler
publisher	World Academy of Science, Engineering and Technology (W A S E T)
publishDate	2011
url	http://eprints.utm.my/id/eprint/44788/
_version_	1643651545239126016
score	13.211869

Cold flow investigation of primary zone characteristics in combustor utilizing axial air swirler

Similar Items