Understanding Shock Waves and Entropy in Fluid Dynamics"

[Samuuuu]

Hello,

I was wondering what was the effect of a normal shock wave on the physical properties of a fluid. How does the entropy (and perhaps pressure, temperature and density) vary from upstream to downstream of a normal shock wave?

Thanks for your help.

 

[jambaugh]

Stagnation temperature is unchanged (unless there is chemical activity occurring).
Entropy is increased (shocks are an irreversible process).

Basically some of the kinetic energy of the moving fluid is converted to heat. Shocks are a bit like turbulence that way.