The Use of Solution Adaptive Grid for Modeling Small Scale Turbulent Structures

The use of large eddy simulation (LES) is computationally intensive and various studies demonstrated the considerable range of vortex scales to be resolved in an LES type of simulation. The purpose of this study is to investigate the use of a dynamic grid adaptation (DGA) algorithm. Despite many developments related to adaptive methods and adaptive grid strategies, the use of DGA in the context of turbulence modeling is still not well understood, and various profound problems with DGA in relation to turbulence modeling are still present. The work presented in this paper focuses on the numerical modeling of flow around a circular cylinder in the sub-critical flow regime at a Reynolds number of 3.9.10 3 . LES simulations with conventional mesh and DGA have been performed with various mesh sizes, refinement criteria and re-meshing frequency, to investigate the effects of re-meshing on the flow field prediction

[2]  P. Moin,et al.  Suitability of upwind-biased finite difference schemes for large-eddy simulation of turbulent flows , 1997 .

[3]  J. Wallace,et al.  The velocity field of the turbulent very near wake of a circular cylinder , 1996 .

[4]  Thomas Huld,et al.  Solution adaptive grids applied to low Reynolds number flow , 2003 .

[5]  C. Rhie,et al.  Numerical Study of the Turbulent Flow Past an Airfoil with Trailing Edge Separation , 1983 .

[6]  Philippe R. Spalart,et al.  Detached-Eddy Simulations Past a Circular Cylinder , 2000 .

[7]  M. Breuer.  A CHALLENGING TEST CASE FOR LARGE EDDY SIMULATION: HIGH REYNOLDS NUMBER CIRCULAR CYLINDER FLOW , 2000, Proceeding of First Symposium on Turbulence and Shear Flow Phenomena.

[8]  A. E. Holdø,et al.  Computational modelling of flow around a circular cylinder in sub-critical flow regime with various turbulence models , 2001 .

[9]  K. Morgan,et al.  Petrov-Galerkin solutions of the incompressible Navier-Stokes equations in primitive variables with adaptive remeshing , 1993 .

[10]  Lars Davidson,et al.  LESFOIL : large eddy simulation of flow around a high lift airfoil : results of the project LESFOIL, supported by the European Union 1998-2001 , 2003 .

[11]  O. C. Zienkiewicz,et al.  Automatic directional refinement in adaptive analysis of compressible flows , 1994 .

[12]  Brice Vallès.  Computational Study of Vortex Shedding Behind Bluff Bodies , 2001 .

[13]  C. Norberg.  Fluctuating lift on a circular cylinder: review and new measurements , 2003 .

[14]  J. Smagorinsky,et al.  GENERAL CIRCULATION EXPERIMENTS WITH THE PRIMITIVE EQUATIONS , 1963 .

[15]  A. E. Holdø,et al.  Modeling of Flow Around a Circular Cylinder in Sub-Critical Flow Regime With the Use of Dynamic Grid Adaptation , 2002 .