- #1
RKT
- 18
- 0
Hiya ! Got a problem about gas flow ...
I understand that gas flow speed through an orifice is choked to the local speed of sound once the upstream to downstream pressure ratio crosses a certain number. Any increase of pressure beyond that point does not speed up the flow anymore (though the mass flow rate will increase as density increases with pressure)
Now if instead of an orifice, if I talk about a tube/pipe, does this still apply ? That is to say, I discharge a gas from a high pressure scuba tank through a tube/pipe into the atmosphere. Would the flow speed still choke at speed of sound ? I guess what I am really asking is whether a tube can be considered as a bunch of orifices lined up together.
Regards
RT
I understand that gas flow speed through an orifice is choked to the local speed of sound once the upstream to downstream pressure ratio crosses a certain number. Any increase of pressure beyond that point does not speed up the flow anymore (though the mass flow rate will increase as density increases with pressure)
Now if instead of an orifice, if I talk about a tube/pipe, does this still apply ? That is to say, I discharge a gas from a high pressure scuba tank through a tube/pipe into the atmosphere. Would the flow speed still choke at speed of sound ? I guess what I am really asking is whether a tube can be considered as a bunch of orifices lined up together.
Regards
RT