Titlebook: Direct and Large Eddy Simulation of Turbulence; Proceedings of the E Ulrich Schumann,Rainer Friedrich Conference proceedings 1986 Springer

粗魯性質(zhì)

Advective Formulation of Large Eddy Simulation for Engineering Type Flowssults are analysed in Fourier space and quality is shown to be comparable to that of pseudo-spectral codes. An advective formulation of subgrid scale effects is proposed and special care is devoted to the problems arising as a large mean field is present.

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Simulation of the Turbulent Rayleigh-Benard Problem Using a Spectral/Finite Difference Techniqueber of 3.8 × 10. and a Prandtl number of 0.76. In the vertical direction, wall boundaries were used and in the horizontal, periodic boundary conditions were applied. A spectral/finite difference numerical method was used to simulate the flow. At these conditions the flow is turbulent, and a sufficie

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Application of the TURBIT-3 Subgrid Scale Model to Scales between Large Eddy and Direct Simulations is actually used in a simulation code. The dominating model coefficients are found to depend on local flow parameters. This method as it is implemented in the TURBIT-3-code makes the subgrid scale model selfadaptive to all scales from direct to large eddy simulations. This feature is verified by si