 theori base pressur transon superson flow theori base pressur transon superson flow physic flow model devis base concept interact dissip shear flow adjac free stream conserv mass wake flow compon integr model flow approach trail edg expans trail edg mix free-jet boundari recompress wake uniqu stabl solut base pressur theoret thin approach boundari layer requir empir best suit evalu merit theori emphas case isoenerget constant-pressur mix turbul free-jet boundari agreement theori experiment data 