How large does a port need to be to admit 12 cubic inches of air @ 14 bar at the speed of sound?

by dave
(clovis, nm 88101)

My tool uses ante-chambers and limited "open" ports.

Assuming an inflow port is open for one-4000 sec, how large must the port be? How does one compute this?

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Bill answers...

Hi Dave...good to hear from you.

The short answer is..."not very big at all". The longer answer follows.

There's a number of pages on this site that address pressure drop, and the information that those pages provide also show the flow through various orifices.

Here's the page with pressure drop information.

If you scroll down to the bottom of that page, you'll find some links that get you information on the math that's behind those flows.

Hope this helps.

Cheers,

Bill