Building-block flow model for large-eddy simulation: Applications*

A subgrid-scale (SGS) model for large-eddy simulation is proposed by devising the flow as a collection of building blocks, whose information enables the prediction of the eddy viscosity. The building blocks are simple canonical flows based on turbulent Poiseuille-Couette flow at different regimes. The model is implemented in the finite-volume compressible solver charLES and validated in a realistic aircraft geometry, the high-lift CRM, which is representative of external aerodynamic applications with trailing-edge separation. The accuracy of the model is compared against traditional SGS models such as Vreman model and Dynamic-Smagorinsky model.