The Mach number behind the reflected wave, often denoted as , represents the speed of the flow relative to the local speed of sound in the region behind a reflected shock wave. It quantifies the velocity of the flow in relation to the speed at which pressure disturbances propagate through the fluid.
- Mach number behind the reflected wave (M3)
- Normal component of Mach number behind the reflected wave (Mn,3)
- Angle between the reflected shock and the direction of the flow in region 2 (𝛽2) in rad
- Deflection angle (θ) in rad