Large eddy simulation of isothermal swirling flows
Large eddy simulation of isothermal swirling flows
Modelling of swirling flames is a difficult challenge due to their complex recirculation and vortex characteristics. Most of the traditional modelling approaches which work well in other situations fails to perform well in swirling flows when the swirl numbers are high. To this end the purpose of this paper is to perform and validate large eddy simulation of a simple, well defined, unconfined, non-reacting swirling jets experimentally investigated by Al-Abdeli and Masri. In this study the sub-grid scale turbulence has been modelled using a localised dynamic procedure. The predicted LES results show very good agreement with measured mean velocities and turbulence intensities. Overall the results show that the complex flow pattern developed from the interaction of a strongly swirling flow with the impinging primary jet in the primary zone has been captured by the present simulation.
Ranga Dinesh, K.K.J.
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Malalasekera, W
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Ibrahim, S.S
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Kirkpatrick, M.P
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July 2005
Ranga Dinesh, K.K.J.
6454b22c-f505-40f9-8ad4-a1168e8f87cd
Malalasekera, W
f4f0cbe7-e395-41f8-acd5-d5c93e31928e
Ibrahim, S.S
ea463b62-a55d-41de-b17b-ec1288c81ab4
Kirkpatrick, M.P
fdf5fc3f-893c-4ae2-879f-58ee0e8f20d4
Ranga Dinesh, K.K.J., Malalasekera, W, Ibrahim, S.S and Kirkpatrick, M.P
(2005)
Large eddy simulation of isothermal swirling flows.
5th Asia-Pacific Conference on Combustion, Adelaide, Australia.
18 - 20 Jul 2005.
4 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Modelling of swirling flames is a difficult challenge due to their complex recirculation and vortex characteristics. Most of the traditional modelling approaches which work well in other situations fails to perform well in swirling flows when the swirl numbers are high. To this end the purpose of this paper is to perform and validate large eddy simulation of a simple, well defined, unconfined, non-reacting swirling jets experimentally investigated by Al-Abdeli and Masri. In this study the sub-grid scale turbulence has been modelled using a localised dynamic procedure. The predicted LES results show very good agreement with measured mean velocities and turbulence intensities. Overall the results show that the complex flow pattern developed from the interaction of a strongly swirling flow with the impinging primary jet in the primary zone has been captured by the present simulation.
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Published date: July 2005
Venue - Dates:
5th Asia-Pacific Conference on Combustion, Adelaide, Australia, 2005-07-18 - 2005-07-20
Organisations:
Engineering Science Unit
Identifiers
Local EPrints ID: 347919
URI: http://eprints.soton.ac.uk/id/eprint/347919
PURE UUID: eba5f48e-56c1-4090-a713-5bcd4b406f81
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Date deposited: 12 Feb 2013 14:48
Last modified: 15 Mar 2024 03:46
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Contributors
Author:
W Malalasekera
Author:
S.S Ibrahim
Author:
M.P Kirkpatrick
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