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

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Christian Moewes,Ralf Mikut,Rudolf Krusee very small viscous diffusion. The eddy viscosity moEnl introduces a rather large diffusion into the system, which stabilizes the computation. It is natural to ask whether the high-Reynoldsnumber flow fields can be obtained without introducing a turbulence moEnl or sub-grid moEnling.

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Notes on Numerical Fluid Mechanicshttp://image.papertrans.cn/e/image/280641.jpg

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Large-Eddy Simulation of Low Reynolds Number Channel Flow by Spectral and Finite Difference Methodsrical codes, of which one is purely spectral while the other utilises finite differences. Both codes are described, and the relative merits of the two approaches are assessed. The near wall streak structures are well resolved by both the simulations.

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Large Eddy Simulation of Turbulent Channel Flow by 1- Equation Modelin the downstream and spanwise directions. The noslip boundary condition is imposed on the walls. Both Smagorinsky model and 1-equation model are applied, and the comparison is made. The importance of the diffusion term in subgrid scale (SGS) turbulent energy balance is pointed out.

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逗它小傻瓜

Direct Simulation of High-Reynolds-Number Flows by Finite-Difference Methodse very small viscous diffusion. The eddy viscosity moEnl introduces a rather large diffusion into the system, which stabilizes the computation. It is natural to ask whether the high-Reynoldsnumber flow fields can be obtained without introducing a turbulence moEnl or sub-grid moEnling.

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John B. Delos,Thomas Bartsch,Turgay UzerStokes equations using a spectral method. The classical peak-valley splitting mode of secondary instability is considered. First results of an investigation of the breakdown stages of the transition process are given. Visualizations of the development of three-dimensional flow structures are present