"uuid","repository link","title","author","contributor","publication year","abstract","subject topic","language","publication type","publisher","isbn","issn","patent","patent status","bibliographic note","access restriction","embargo date","faculty","department","research group","programme","project","coordinates" "uuid:71dc43eb-7cde-4c4d-9bd6-44b54173c354","http://resolver.tudelft.nl/uuid:71dc43eb-7cde-4c4d-9bd6-44b54173c354","Recent progress on flux-limiting based ILES","Grinstein, F.F.; Fureby, C.","","2006","We review our recent progress in understanding the theoretical basis of Implicit Large Eddy Simulation (ILES) and fundamental features relating to its performance. We use the Modified Equation Analysis (MEA) to show that the leading order truncation error terms introduced by a particular class of hybrid methods provide implicit Subgrid Scale (SGS) models similar in form to those of conventional mixed SGS models. Major properties of the implicit SGS model are related to: (i) the choice of high- and low-order schemes – where the former is wellbehaved in smooth flow regions and the latter is well-behaved near sharp gradients; (ii) the choice of flux-limiter which determines how these schemes are blended locally, depending on the flow; (iii) the balance of the dissipation and dispersion contributions to the numerical solution, which depend on the design details of each numerical method. The possibility of achieving ILES performance enhancements through improved design of the SGS physics capturing capabilities of the high resolution methods is emphasized in this context. Results from recent tests of the performance of various hybrid algorithms suitable for ILES is then demonstrated in the case of the Taylor-Green vortex (TGV) problem. The results show robustness of ILES in capturing established theoretical findings for transition and turbulence decay, in terms of the characteristic evolution of the kinetic energy dissipation, energy spectra, and enstrophy.","LES; implicit LES; limiting; non-oscillatory; modified equation","en","conference paper","","","","","","","","","","","","","",""