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Wall Boundary Conditions for Variational Multiscale Large-Eddy Simulations

  • S. J. HulshoffEmail author
  • E. A. Munts
Conference paper

Abstract

Variational multiscale discretisations for turbulent flows, first introduced by Hughes [1] have been shown to produce accurate results with relatively simple modelling assumptions. A particularly flexible discontinuous Galerkin variant has been developed by Collis [2]. Continuous Galerkin discretisations, however, can be advantageous in that their low implicit dissipation simplifies the calibration of subgrid-scale models. Recent work has indicated that combining continuous methods with weak boundary conditions can result in improved accuracy [4], while adding some of the flexibility inherent in discontinuous methods. We consider a continuous-Galerkin variational-multiscale method combined with penalty-based weak boundary conditions, and describe the relation of the latter to traditional wall-stress models.

Keywords

Direct Numerical Simulation Discontinuous Galerkin Method Hard Condition Wall Boundary Condition Subgrid Scale Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Faculty of Aerospace Engineering, Delft University of TechnologyThe Netherlands

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