A dynamic finite volume scheme for large-eddy simulation on unstructured grids

摘要: In recent years there has been considerable progress in the application of large-eddy simulation (LES) to increasingly complex flow configurations. Nevertheless a lot fundamental problems still need be solved order apply LES reliable way real engineering problems, where typically finite-volume codes on unstructured meshes are used. A self-adaptive discretisation scheme, context an solver, is investigated case isotropic turbulence at infinite Reynolds number. The Smagorinsky and dynamic sub-grid scale models considered. discrete interpolation filter used for model. It one first applications based approach presented by Marsden et al. this work, original procedure impose shape through specific selection process basic filters also proposed. Satisfactory results obtained using scheme implicit LES. When coupled with models, numerical dissipation shown dominant over component. effect appears important beneficial, improving particular energy spectra. test fully developed channel Re"@t=395 performed, comparing non-limited Once again introduction limiter proves beneficial.