On the coupling of wall-model immersed boundary conditions and curvilinear body-fitted grids for the simulation of complex geometries

One of the main limitations in computational aerodynamics lies ability CFD solvers to handle complex geometries while maintaining their accuracy. Among currently available strategies, Zonal Immersed Boundary Conditions (ZIBC) has shown its capability introduce geometrical details for simulations high Reynolds turbulent flows. In this context, work aims extend ZIBC framework, initially adapted reproduce blockage effects, take into account configurations where influence spatially developing boundary layers be accurately predicted. For purpose, a compact sharp interface immersed method been developed curvilinear grids. Moreover, Thin Layer Equations (TBLE) wall model based on one-dimensional RANS Spalart-Allmaras equations is coupled with IBC inner part compressible layers. The coupling Detached Eddy Simulation (ZDES) approach improved and permits simulate flows capturing wall-normal gradients limited grid resolution. This strategy applied simulation generic missile configuration (FG5) an angle attack 10? using ZDES approaches. first time, quantities such as unsteady loads, including viscous contribution, are accuratly reproduced surfaces modelled hybrid RANS/LES computations realistic at number. Such reconstruction physical achieved thanks precise procedure TBLE model.