- #1
Stonescar
- 2
- 0
Hello,
I'm looking at this problem which states:
"A parallel air flow along a semi infinite flat plate has undisturbed parameters as follows: "
Then they list the speed, temprature, viscousity and pressure.
"Demonstrate that the boundary layer can treated by means of incompressible analysis. "
The solution says:
Incompressible if M^{2}_{\infty}>>4
Where M^{2}_{\infty}=\frac{U^{2}}{\gamma R T}
I'm just wondering what formula this is? I've never seen it before.
What is M ?
I'm looking at this problem which states:
"A parallel air flow along a semi infinite flat plate has undisturbed parameters as follows: "
Then they list the speed, temprature, viscousity and pressure.
"Demonstrate that the boundary layer can treated by means of incompressible analysis. "
The solution says:
Incompressible if M^{2}_{\infty}>>4
Where M^{2}_{\infty}=\frac{U^{2}}{\gamma R T}
I'm just wondering what formula this is? I've never seen it before.
What is M ?
