Verification and Validation: The Path to Predictive Scale-Resolving Simulations of Turbulence

Abstract This work investigates the importance of verification and validation (V&V) to achieve predictive scale-resolving simulations (SRSs) turbulence, i.e., computations capable resolving a fraction turbulent flow scales. Toward this end, we propose novel but simple V&V strategy based on grid physical resolution refinement studies that can be used even when exact initial conditions are unknown, or reference data unavailable. is particularly relevant for transient transitional problems, as well improvement turbulence models. We start by presenting literature survey results obtained with distinct SRS models flows past circular cylinders (CCs). It confirms illustrating large variability results, which independent selected mathematical model Reynolds number. The proposed then three representative problems practical interest. illustrate it possible conduct reliable exercises evidence turbulence. Most notably, also confirm advantages potential strategy: separate assessment numerical modeling errors, enhanced physics analysis, identification key phenomena, ability operate unknown