from pygasflow.interactive.diagrams import NozzleDiagram
from pygasflow.nozzles import CD_Min_Length_Nozzle
nozzle = CD_Min_Length_Nozzle(Ri=0.3, Rt=0.2, Re=0.6)
d = NozzleDiagram(nozzle=nozzle, show_characteristic_lines=True)
d.show_figure()