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Computer modelling of flow around bridges using LES and FEM

Selvam, R.P. / Tarini, M.J. / Larsen, A.

An efficient large eddy simulation model (LES) using finite element method (FEM) is presented. The Navier-Stokes equations are solved using an implicit procedure. The three-dimensional LES model could capture the drag crisis phenomena for a circular cylinder. Only 2% of the grid point used by Tamura is used to capture the drag crisis. This is possible because of the use of accurate approximation of convection term using FEM which reduces the numerical diffusion. This model is used to study the flow over Great Belt East Bridge. The computed drag and Strouhal number are in reasonable agreement with wind tunnel measurement.

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Computer modelling of flow around bridges using LES and FEM

Selvam, R.P. / Tarini, M.J. / Larsen, A.

An efficient large eddy simulation model (LES) using finite element method (FEM) is presented. The Navier-Stokes equations are solved using an implicit procedure. The three-dimensional LES model could capture the drag crisis phenomena for a circular cylinder. Only 2% of the grid point used by Tamura is used to capture the drag crisis. This is possible because of the use of accurate approximation of convection term using FEM which reduces the numerical diffusion. This model is used to study the flow over Great Belt East Bridge. The computed drag and Strouhal number are in reasonable agreement with wind tunnel measurement.

Computer modelling of flow around bridges using LES and FEM

Selvam, R.P. / Tarini, M.J. / Larsen, A.

An efficient large eddy simulation model (LES) using finite element method (FEM) is presented. The Navier-Stokes equations are solved using an implicit procedure. The three-dimensional LES model could capture the drag crisis phenomena for a circular cylinder. Only 2% of the grid point used by Tamura is used to capture the drag crisis. This is possible because of the use of accurate approximation of convection term using FEM which reduces the numerical diffusion. This model is used to study the flow over Great Belt East Bridge. The computed drag and Strouhal number are in reasonable agreement with wind tunnel measurement.

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Title:

Computer modelling of flow around bridges using LES and FEM

Contributors:

Selvam, R.P. (author) / Tarini, M.J. (author) / Larsen, A. (author)

Published in:

US National Conference on Wind Engineering, 8 ; 643-651

Journal of Wind Engineering and Industrial Aerodynamics ; 77-78

Publication date:

1998

Size:

9 Seiten, 15 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0167-6105(98)00179-2

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Rechnersimulation , Finite-Elemente-Methode , Navier-Stokes-Gleichung , Windkanal , Strouhal-Zahl , Strömungsverlauf , Brücke (Bauwerk)

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