Critical and non-Critical Flow of flow pattern by critical pressure ratio (rc)
x = Cp/Cv
critical pressure ratio (rc) = (2/(x+1))^(x/(x-1))
When rc < (Downstream Pressure/Upstream Pressure), is Non-Critical flow.
When rc >= (Downstream Pressure/Upstream Pressure), is Critical flow.
* My Question is, "Can the flow pattern depend on different calculation for Nozzle and Squared Edge?"
Best Regards and Thanks
PS: I am calculating the ORIFICE SIZING for NOZZLES AND SQUARED-EDGE.