State significance of Mach number.
• It is the ratio of velocity of fluid to the sonic velocity of compressible fluid
M=V/a
Where,
M= Mach number
V=Velocity of fluid
a=Sonic velocity
Significance of Mach number:
If
• M<1 subsonic nozzle
• M>1 supersonic nozzle
• M=1 subsonic and supersonic nozzle