 transon flow compress fluid axial symmetr nozzl transon flow compress fluid axial symmetr nozzl method develop tomotika tamada quart appl math 7 381-397 1950 rev 11 275 comput two-dimension mix isentrop flow sonic region flow vicin throat axial symmetr nozzl studi exact solut von karman's equat axial symmetr transon flow flow converg diverg nozzl consid detail solut consist branch reject singular remain branch pure superson flow taylor's type flow local superson region throat vari paramet branch approach asymptot yield meyer's type asymmetr flow 