Application of a Scale-Resolving Hybrid model to high Reynolds number canonical and industry-relevant turbulent flows

High-fidelity scale resolving methods remain prohibitively expensive to study turbulent flows of industrial relevance, necessitating the development of methods that can provide high-accuracy data at reduced ​computational cost. Consequently, a Scale-Resolving Hybrid method based on a time-filtering formalism is applied to different Reynolds-Averaged Navier Stokes base models, permitting a reduction ​of the required near-wall resolution. The closures ​are validated and compared on academic canonical flows including ​a turbulent channel flow and ​the flow ​around a finite height cylinder. In general, performance ​is strong with good agreement with experiment and fully resolved methods, but at lower computational cost.

Subsequently, the hybrid model ​is applied to a case of industrial interest, specifically the DrivAer notchback model. The agreement with experiments is not as strong as in the academic canonical cases but is in line with previous studies using other scale-resolving methods. Consideration of potential changes to improve the robustness and accuracy of the model for industrial cases is suggested for future work.