pressure at exit plane of pipe: static or total

willgoat

Hi all, hope i can get some opinions here on a topic discussed at work. Flow is exiting a pipe from a chamber at P_in to outside/atmospheric with pressure patm, at say low mach number 0.05.

At the exact exit plane of the pipe, is the total pressure equal to the patm, or will it instead be the static pressure which is equal to patm? I hope i explain the query well enough. thanks.

RandomGuy88

It will be static pressure that is equal to Patm. Total pressure will be Patm plus dynamic.