Active Flow Control in Supersonic Nozzles

Active flow control in supersonic nozzle mainly concerns Fluidic Thrust Vectoring (FTV) strategies. Thrust Vectoring in fixed symmetric nozzles can be obtained by generating a local perturbation at wall causing flow separations, asymmetric pressure distributions and therefore, the vectoring of the primary jet thrust. The control action can be steady, e.g. continuous blowing, or pulsating, e.g. by synthetic jet actuators. In the paper a numerical procedure is explained, which is able to deal with most of the FTV strategies as well as with continuous and pulsating flow excitation. The flow governing equations are solved according to a finite volume discretization of the compressible URANS equations. The effectiveness of different combinations of FTV strategies and flow actuations are presented. The numerical results obtained are compared with the experimental data found in the open literature.