Numerical investigation of supersonic jet interaction for axisymmetric bodies

A detailed numerical investigation of the interaction between a lateral jet and the external flow has been performed for several axisymmetric bodies. Numerical predictions of the supersonic viscous flow has been obtained usin g an existing Reynolds-averaged Navier-Stokes computational technique. The computational results have been validated using surface pressure and global force and moment measurements from a previously published experimental inv estigation. Surface-pressure measurements on the body are generally in good agreement with the experimental measurements, particularly in the region d ownstream of the side jet. Force and moment predictions also show excellent agreement with experimental measurements. The results show that the intera ction of the jet with the external flow produces a complex flowfield that m ay be difficult to characterize using simpler approaches. The effects of no se shape, angle of attack, mass flow, and Eight velocity have been investig ated. For the geometries and flight conditions considered here, Right veloc ity and jet mass flow appear to have the most significant effect on the for ce and moments, whereas nose shape and small variations in angle of attack produced relatively small effects. These conclusions are supported by the r esults obtained in the prior experimental investigation.