Analysis of Transonic Viscous-Inviscid Interactions on Axisymmetric Afterbodies with Jet Effects and Boattail Injection in Separated Regions.

Abstract : The transonic flow with viscous-inviscid interactions over axisymmetric afterbodies is analyzed. Viscous effects are considered and iterated with the inviscid solution of the non-linear small perturbation equation. The jet flow is simulated by a sting-cone frustum combination. For boattail flow separation, the shear flow properties and the viscous mixing are calculated using a Korst base flow type of analysis. Boattail mass and energy injection are used in the separated region to obtain a favorable interference with the inviscid flow with consequent drag reduction. A complete program listing is provided. The program can be used for subsonic free stream Mach number and zero angle of attack. (Author)