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@inproceedings{Moura:2017, author = {Moura, RC and Peiro, J and Sherwin, SJ}, title = {On the accuracy and robustness of implicit LES/under-resolved DNS approaches based on spectral element methods}, year = {2017} }
TY - CPAPER AB - We present a study on the suitability of under-resolved DNS (uDNS)-also called implicit LES (iLES)-approaches based on spectral element methods (SEM), with emphasis on high-order continuous and discontinuous Galerkin (i.e. CG and DG) schemes. Broadly speaking, these are model-free eddy-resolving approaches to turbulence which solve the governing equations in unfiltered form and rely on numerical stabilization techniques for small-scale regularization. Model problems in 1D, 2D and 3D are used in the assessment of solution quality and numerical stability. A rationale for the excellent potential of these methods for transitional and turbulent flows is offered on the basis of linear dispersion-diffusion analysis. AU - Moura,RC AU - Peiro,J AU - Sherwin,SJ PY - 2017/// TI - On the accuracy and robustness of implicit LES/under-resolved DNS approaches based on spectral element methods ER -