Constant along a given right-running Mach wave refers to a property or parameter that remains the same as the wave propagates through the flow. In other words, it’s a quantity that doesn’t change as the Mach wave moves through the fluid. A “right-running Mach wave” is a specific type of wave associated with changes in the Mach number of the flow. It moves in the same direction as the flow (hence “right-running”) and typically arises at points of compression, such as the leading edge of an object or a converging nozzle.
NOTE: C_ refers to the right running Mach wave
- Constant along a given right running Mach wave (K_)
- Prandtl-Meyer flow angle (𝜃) in rad
- Prandtl-Meyer function (𝜈(M))