Influence of spatial discretization schemes on accuracy of explicit LES: Canonical problems to engine-like geometries
作者： J. Martínez , F. Piscaglia , A. Montorfano , A. Onorati , S.M. Aithal
DOI: 10.1016/J.COMPFLUID.2015.05.007
关键词:
摘要: Abstract The choice of the spatial discretization scheme and subgrid-scale (SGS) model can have a significant impact on accuracy Large Eddy Simulations (LES). A systematic study influence advection term scheme, namely ( CDS , LUST ) SGS σ -model, WALE dynamic Smagorinsky) solution is presented in this work. Three canonical cases with increasing complexity are considered study, namely, fully developed turbulent channel flow Re τ = 395 backward facing step wall-mounted hump. Mean errors respect to DNS or experimental data quantified order compare relative each combination scheme/model. Detailed comparison numerical simulations performed by open-source CFD code OpenFOAM® shows that -model yields best results. This has hence been used characteristics an engine-like geometry. Results show good agreement data.
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