Attached are the screen shots of the model I used, with dimensions, the mesh used, and the results for the 2-D planar case (matching expectations), and 2-D axisymmetric case (likely erroneous, with a high pressure point where a shock wave is expected).  The mesh has three zones of different meshing size, .2 m, .02 m, and .002 m, giving a total of ~455,000 nodes.  Again, setup is far field, outlet, and gauge pressure at 101100 Pa, inlet velocity is 686 m/s, Mach far field is 2, all temperatures are 300 K.  Inviscid model was used.  Hope this helps.