Samenvatting
The filtered fluid dynamic equations are discretized in space by a
high-order spectral difference(SD) method coupled with large eddy
simulation (LES) approach. The subgrid-scale stress tensor is
modelled by the wall-adapting local eddy-viscosity model (WALE). We
solve the unsteady equations by advancing in time using a
second-order backward difference formulae (BDF2) scheme. The
nonlinear algebraic system arising from the time discretization is
solved with the nonlinear lower-upper symmetric Gauss-Seidel
(LU-SGS) algorithm. The accuracy and the
reliability of the solver are tested by solving the 2D "turbulent"
flow around a square cylinder at Re = 2.2 \times
10^{4} and the 3D turbulent flow in a muffler at Re = 4.64 \times
10^{4}. The results show a good agreement with the reference solutions and the experimental
data.
high-order spectral difference(SD) method coupled with large eddy
simulation (LES) approach. The subgrid-scale stress tensor is
modelled by the wall-adapting local eddy-viscosity model (WALE). We
solve the unsteady equations by advancing in time using a
second-order backward difference formulae (BDF2) scheme. The
nonlinear algebraic system arising from the time discretization is
solved with the nonlinear lower-upper symmetric Gauss-Seidel
(LU-SGS) algorithm. The accuracy and the
reliability of the solver are tested by solving the 2D "turbulent"
flow around a square cylinder at Re = 2.2 \times
10^{4} and the 3D turbulent flow in a muffler at Re = 4.64 \times
10^{4}. The results show a good agreement with the reference solutions and the experimental
data.
Originele taal-2 | English |
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Titel | Fifth European Conference on Computational Fluid Dynamics (ECCOMAS) |
Pagina's | 1-20 |
Aantal pagina's | 20 |
Status | Published - 14 jun 2010 |
Evenement | Unknown - Stockholm, Sweden Duur: 21 sep 2009 → 25 sep 2009 |
Conference
Conference | Unknown |
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Land/Regio | Sweden |
Stad | Stockholm |
Periode | 21/09/09 → 25/09/09 |