shockwaves

[muck-savage]

Could someone please tell me what happens to the speed, lss, temperature, density and pressure in normal, compressive,
oblique and expansive shockwaves and any other things I've left out ?

[Electric Sky]

Normal Shockwave - Airstream is slowed to subsonic / Static Pressure, Temperature and Density all go Up / The Energy of the airstream (total pressure) is greatly reduced

Expansion Wave - Velocity Up / Pressure, Density and Temp all Down

Oblique Shockwave - Same as Normal Shockwave, only difference being that airflow passing through the oblique shockwave changes direction and the airflow behind the shockwave doesn't necessarily all become subsonic.

I can't recall compressive shockwaves as I suffered all of this too long ago With regard to LSS, rule is that the lower the temperature, the lower the speed of sound. Hope this helps and good luck!

ES

[Keith.Williams.]

The only thing that really needs to be added to the comments from Electric Sky is that LSS is proportional to temperature (38.94 x square root of absolute temp). So if temp goes up or down, LSS does the same. As air passes through a shock wave the temperature increases, so the LSS increases. As air goes through an expansion wave the temperature and LSS both decrease.