Numerical prediction of air flow in a sharp 90 degree elbow

Mossad, Ruth and Yang, William and Schwarz, M. Philip (2009) Numerical prediction of air flow in a sharp 90 degree elbow. In: 7th International Conference on Computational Fluid Dynamics in the Minerals and Process Industries (CFD 2009), 9-11 Dec 2009, Melbourne, Australia.

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Abstract

Numerical and experimental investigations of turbulent air
flows inside a sharp 90° elbow bend were conducted in an
open-circuit horizontal-to-vertical suction wind tunnel
system. Computational fluid dynamics simulations were
performed using Fluent software with 3D, steady,
turbulent and incompressible flow conditions assumed.
Three different turbulence models were used namely the
k-ε realizable, the k-ε RNG and the Reynolds Stress
models in conjunction with non-equilibrium wall
functions. The predictions of mean velocity profiles of the
air flow inside the sharp 90° elbow duct were compared
against the experimental results obtained using Laser
Doppler Anemometry (LDA). Reasonable agreement was
obtained. Reynolds Stress Model was expected to perform
the best; however this was not confirmed from the results.

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Item Type:	Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed:	Yes
Item Status:	Live Archive
Additional Information:	© 2009 CSIRO Australia. This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source.
Faculty/School / Institute/Centre:	Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering (Up to 30 Jun 2013)
Faculty/School / Institute/Centre:	Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering (Up to 30 Jun 2013)
Date Deposited:	04 Nov 2011 07:18
Last Modified:	21 Nov 2014 03:50
Uncontrolled Keywords:	computational; sharp elbow; turbulent models; Fluent (software)
Fields of Research (2008):	01 Mathematical Sciences > 0103 Numerical and Computational Mathematics > 010301 Numerical Analysis 09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics 09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
Socio-Economic Objectives (2008):	B Economic Development > 85 Energy > 8598 Environmentally Sustainable Energy Activities > 859802 Management of Greenhouse Gas Emissions from Electricity Generation
URI:	http://eprints.usq.edu.au/id/eprint/6480

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