An Application of a Second Order Upwinding Scheme for an Implicit LES CFD Solver

Brady, P. D. M., Gaston, M. and Reizes, J. (2007). An Application of a Second Order Upwinding Scheme for an Implicit LES CFD Solver. In: Peter Jacobs, Tim McIntyre, Matthew Cleary, David Buttsworth, David Mee, Rose Clements, Richard Morgan and Charles Lemckert, 16th Australasian Fluid Mechanics Conference (AFMC). 16th Australasian Fluid Mechanics Conference (AFMC), Gold Coast, Queensland, Australia, (1071-1078). 3-7 December, 2007.

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Author Brady, P. D. M.
Gaston, M.
Reizes, J.
Title of paper An Application of a Second Order Upwinding Scheme for an Implicit LES CFD Solver
Conference name 16th Australasian Fluid Mechanics Conference (AFMC)
Conference location Gold Coast, Queensland, Australia
Conference dates 3-7 December, 2007
Proceedings title 16th Australasian Fluid Mechanics Conference (AFMC)
Place of Publication Brisbane, Australia
Publisher School of Engineering, The University of Queensland
Publication Year 2007
Year available 2007
Sub-type Fully published paper
ISBN 978-1-864998-94-8
Editor Peter Jacobs
Tim McIntyre
Matthew Cleary
David Buttsworth
David Mee
Rose Clements
Richard Morgan
Charles Lemckert
Start page 1071
End page 1078
Total pages 8
Collection year 2007
Language eng
Abstract/Summary The flow past a right square cylinder in a duct at a Reynolds number of 22 x 103 has been employed to validate the use of second order upwinding, instead of a subgrid model in a largeeddy simulation. In this extensively studied problem, all the numerical work has been based on a simplifying assumption that the square cylinder is infinite, which resulted in all previous workers using cyclic boundary conditions so as to reduce the required domain size. It is not clear how the size of the domain had been established and, therefore, whether it was sufficiently large to adequately represent the experimental flow in a duct. The integral quantities of the drag and lift coefficient and the Strouhal number, converged towards the experimental values as the grid resolution is increased. However, the cyclic boundary condition assumption leads to a flow width that provides too small a region of uncorrelated flow. A model of the full duct case, identical to experimental domain, was used to contrast the cyclic domain results. Surprisingly the second order upwind model generates power spectra that appear to correctly capture the energy cascade down to the inertial and viscous ranges.
Subjects 290000 Engineering and Technology
Keyword square cylinder
Strouhal number
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Collection: 16th Australasian Fluid Mechanics Conference
 
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Created: Fri, 21 Dec 2007, 11:58:01 EST by Bikash Das on behalf of School of Engineering