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ECN publicatie:
Titel:
Analysis of fourth-order accurate symmetry-preserving boundary conditions for the incompressible Navier-Stokes equations
 
Auteur(s):
Sanderse, B.; Koren, B.
 
Gepubliceerd door: Publicatie datum:
ECN Windenergie 12-7-2010
 
ECN publicatienummer: Publicatie type:
ECN-M--10-061 Conferentiebijdrage
 
Aantal pagina's: Volledige tekst:
22 Download PDF  (342kB)

Gepresenteerd op: Firth European Conference on Computational Fluid Dynamics, Lisbon, Portugal, 14-17 juni 2010.

Samenvatting:
In this paper we investigate symmetry-preserving boundary conditions for a fourth-order symmetry-preserving finite volume method, to able to do accurate turbulence simulations for wind-turbine wake applications. It is found that the use of Dirichlet conditions limits the fourth-order method to (at most) second order. However, on properly chosen non-uniform grids, fourth-order behavior can be displayed on coarse grids, which can make the method attractive for simulations of turbulent flow.


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