The Normal Mach number behind a shock wave, often denoted as , represents the Mach number of the flow behind the shock wave, considering the normal component of velocity relative to the shock’s front. It is used to describe the change in velocity due to a shock wave’s effect on the flow.
- Normal Mach number behind the shock wave (Mn,2)
- Specific heat ratio (γ)
- Normal component of upstream Mach number (Mn,1)