The results of numerical simulation of cavitating flow around the experimental model of a
guide vane of a water turbine are given. The possibilities of the detached eddy simulation (DES)
method for calculating the flow dynamics around the hydrofoil in two regimes at 3° and 9° angles of
attack are analyzed. The mean flow velocity inside the boundary layer is compared with the experimental
data. The dimensions and shape of the three-dimensional vapor cavity are presented in various
operating regimes. The cavity dynamics and induced pulsations are analyzed.