Numerical simulation of transonic turbulent flow around the wedge-shaped body with backward-facing step

The paper considers complex near-wall fully-3D transonic (Mach number $\mathrm{M}=0.913$) turbulent flow around the wedge-shaped body with backward step, Reynolds number $\mathrm{Re}=7.2\cdot 10^6$. The technology of numerical simulation of such-type problems is represented in detail. A series of preliminary auxiliary predictions is carried out in order to choose the optimal computational algorithm. The numerical results of final prediction for the complete geometry based on hybrid IDDES approach of RANS-LES family are given. The validity of the results is confirmed by the comparison with the available experimental data.