0
1.2kviews
Define (1) Mach Number (2) Stagnation pressure
1 Answer
written 5.5 years ago by |
Mach Number:-
It is defined as the ratio of actual velocity v to the sonic velocity c
$\therefore M=\frac{v}{c}$
when
$M\gt 1$.......Flow is supersonic
$M\lt 1$.......Flow is subsonic
$M=1$.......Flow is sonic
Stagnation pressure:-
The stagnation pressure $P_0$ is related to mach number and static pressure in the case of an ideal gas.
$\frac{P_0}{P}=(\frac{T_0}{T})^{\frac{\gamma}{\gamma -1}}=(1+\frac{\gamma-1}{2}M^2)^{\frac{\gamma}{\gamma-1}}$