Supersonic flow over paired compression wedges of different sweep installed on the pre-compression surface

摘要

The results of the numerical modeling of the flow over configurations consisting of two adjacent wedges with swept leading edges located on a flat surface of the pre-compression ramp are presented. The flow around compression wedges with different sweeps of leading edges is considered: zero sweep (chi = 0), positive sweep (chi > 0), and negative sweep (chi < 0). Swept wedges deflect the flows compressed by them either to the sides opposite to the configuration symmetry plane (chi > 0) or, on contrary, one towards another (chi < 0). The computations have been done with solution of the averaged Navier-Stokes equations and with the use of the SST k-omega turbulence model at the freestream Mach number M = 6. The difference in flow structure is analyzed, which includes, in particular, quasi-conical three-dimensional separations of the turbulent boundary layer on the pre-compression surface, which are induced by shock waves generated by swept wedges. The characteristics of the side flow spread on compression wedges of different sweep are presented.