Computational modelling of flow around a circular cylinder in sub-critical flow regime with various turbulence models (Q2717822)

Two-dimensional numerical simulations of a flow past a circular cylinder at \(\text{Re} =1.4\times 10^5\) are presented comparing different types of turbulence models. The RANS approach using enhanced two-equation models, i.e. nonlinear \(k-\varepsilon\), models with RNG techniques and anisotropic models are compared with LES approach using classical sub-grid scale models with a near-wall modification. The employed commercial numerical code is based on a finite element discretization with four-noded quadrilateral elements. The authors also give a comparison between different numerical simulations with experimental data for typical quantities, like Strouhal frequency, drag and lift coefficients, and pressure distribution.