| Abstract: | The coordinates of the sonic line are derived by means of Frankl's solution 1], while the supersonic part of the jet is considered by the method of characteristics. The numerical solution has been used to calculate the family of rarefaction waves and a family of nozzles having a corner point and a curvilinear transition surface. These calculations show that, when there is a corner point, the shape of the sonic line has hardly any effect on the velocity distribution along the symmetry axis. It is also shown that a positive pressure gradient arises on the surface of the nozzle beyond the corner point if that point lies upstream from the limiting characteristic of the first family. |
