3 ms·
Isn’t this a case of choked flow? In choked flow, you don’t need a very high pressure ratio to go sonic. You only need P_exit/P_reservoir <= 0.582. That is, th
by elteto 3y ago
Isn’t this a case of choked flow?
In choked flow, you don’t need a very high pressure ratio to go sonic. You only need P_exit/P_reservoir <= 0.582. That is, the pressure of the reservoir (the bottle in this case) only needs to be 1.72 times greater than the exit pressure (ambient).
[0] https://en.m.wikipedia.org/wiki/Choked_flow https://en.m.wikipedia.org/wiki/Choked_flow
- auxym 3y agoYes, unless there's a de laval nozzle inside that thing, which I wouldn't expect. If you've ever used a compressed air gun from a compressor or at a tire fill station, it's also very likely choked flow, sonic exit speed.