10
2nd YEAR FLUIDS / COMPRESSIBLE FLOW
3
- FOR A PERFECT GAS : h = CP T
- HENCE : CP TO = CP T + U2 / 2 (3.15)
TO
IS CALLED THE STAGNATION TEMPERATURE. FROM 3.14, TO > T, INDICATING THAT STAGNATION LEADS TO WARMING OF A COMPRESSIBLE FLUID.
BY DIVIDING EQUATION (3.15) BY CPT :
- SINCE a2 =
gRT AND CP = gR / ( g-1) :
- GIVEN THAT M = U / a
(3.16)
- FROM EQUATION (3.12) :
(3.17)
