Download Complex Effects in Large Eddy Simulations by Stavros Kassinos, Carlos Langer, Gianluca Iaccarino, Parviz PDF

By Stavros Kassinos, Carlos Langer, Gianluca Iaccarino, Parviz Moin

This quantity incorporates a number of specialist perspectives at the state-of-the-art in huge Eddy Simulation (LES) and its software to advanced ?ows. a lot of the fabric during this quantity used to be encouraged via contributions that have been initially awarded on the symposium on complicated E?ects in huge Eddy Simulation held in Lemesos (Limassol), Cyprus, among September twenty first and twenty fourth, 2005. The symposium was once geared up by means of the college of Cyprus including the guts for Turbulence examine at Stanford college and NASA Ames learn heart. some of the difficulties that has to be tackled with a purpose to enhance techn- ogy and technological know-how more and more require synergetic methods throughout disciplines. Computational technology refers to interdisciplinary learn aiming on the so- tion of advanced scienti?c and engineering difficulties less than the unifying topic of computation. The explosive development of desktop energy over the past few a long time, and the development of computational tools, have enabled the applicationofcomputationalapproachestoanever-increasingsetofproblems. the most difficult difficulties to regard computationally within the self-discipline of Computational Fluid Dynamics is that of turbulent ?uid ?ow.

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M. Saiki. A subgrid-scale model based on the estimation of unresolved scales of turbulence. Phys. Fluids, 9:2148–2164, 1997. [3] S. Stolz and N. A. Adams. An approximate deconvolution procedure for large-eddy simulation. Phys. Fluids, 11:1699–1701, 1999. [4] J. A. Domaradzki and N. A. Adams. Modeling subgrid scales of turbulence in large-eddy simulations. J. , 3:24, 2002. [5] S. Ghosal. An analysis of numerical errors in large-eddy simulations of turbulence. J. Comput. , 125:187–206, 1996. [6] A.

A measurement functional was then devised consisting of the the nondimensional drag force integrated over the cylinder surface and averaged over Fig. 4. Navier-Stokes solution at the non-dimensional time t = 635 computed on the reference 40K element mesh using P2 space-time elements. Presented here are velocity contours (left) and logarithmically scaled vorticity magnitude contours (right). (See Plate 9 on page 417) 44 Timothy J. Barth four drag oscillation periods, t ∈ [605, 700], determined from the reference solution with time non-dimensionalized here using freestream sound speed and cylinder diameter.

Acknowledgments The research is supported by the German Research Council under contract AD 186/2. JAD was supported by NSF and the Alexander von Humboldt foundation. References [1] A. Leonard. Energy cascade in large eddy simulations of turbulent fluid flows. Adv. , 18A:237–248, 1974. [2] J. A. Domaradzki and E. M. Saiki. A subgrid-scale model based on the estimation of unresolved scales of turbulence. Phys. Fluids, 9:2148–2164, 1997. [3] S. Stolz and N. A. Adams. An approximate deconvolution procedure for large-eddy simulation.

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