Constant along a given right-running Mach wave for the internal grid point four refers to a specific parameter or property that remains unchanged as a right-running Mach wave propagates through the flow field and interacts with the conditions at the internal grid point labeled as four.
NOTE: Along the C− characteristic, K− is constant. Hence, (K−)4 = (K−)5.
- Constant along a given right running Mach wave for the internal grid point four (K_)4
- Prandtl-Meyer flow angle for internal grid point four (𝜃4) in rad
- Prandtl-Meyer function for internal grid point four (ν4)