Yes, for now the flow is subsonic yet above M.3 so it is compressible. In the future it maybe supersonic in which case as I see diffusing/converging have opposite effects. Sounds simple yet gets very complex. Appreciate the assistance very helpful seems to confirm what I was thinking.
Thanks for the tips and equations. Yes I believe that maybe correct also related to Bernoulli's "conservation energy equation only modified for compressible flow. Now I have to figure out how to apply them to solve for the ratio of area expansion to change in velocity or pressure. Gravity does...
Change in gas velocity and pressure entering and exiting a duct or pipe expansion section (diffuser). Looking for a formula to determine velocity, pressure and density of a gas as it exits a duct or pipe diffuser section based on the entrance area to exit area ratio. Ambient temperature...