RANS Modelling of a NACA4412 Wake Using Wind Tunnel Measurements

Wake analysis plays a significant role in wind-farm planning through the evaluation of losses and energy yield. Wind-tunnel tests for wake studies have high costs are time-consuming. Therefore, computational fluid dynamics (CFD) emerges as an efficient alternative. An especially attractive approach is based on solution Reynolds-averaged Navier–Stokes (RANS) equations with two-equation turbulence closure models. The validity this its inherent limitations, however, remain to be fully understood. To end, detailed wind-tunnel experiments NACA4412 wing section profile compared CFD results. Two- three-dimensional RANS simulations carried out range angles attack up stall conditions at chord- inflow-based Reynolds number Rec=4×105. Here, we aim investigate characteristics self-similar behaviour, both from experimental numerical perspectives. measurements by means hot-wire anemometry capturing pattern several planes. sensitivity model different configurations setup considerations required reliable simulation discussed. agreement between CFD, experiments, literature fairly good many aspects, including behaviour parameters, well flow field. Comparison URANS/RANS data indicates that latter adequate methodology characterize wings their wakes once designed appropriately limitations due discretization modelling considered.