What Happens Thermally When High-Pressure Air Bursts into a Dead-Ended Tube?

[Hiarum]

I have a question in regards to a specific situation and really don't know which elements are significant.

The example is high pressure AIR (a real gas/ not ideal ;-) of relatively unlimited volume,
released via a rupture diaphragm into an enclosed tubulation. (dead ended)

Relative dimensions are 1 liter reservoir at 200 bar, a 30 mm dia. rupture disc into a 5 mm dia. tubulation, a dead ended tube of 30 mm length that has been open to ambient conditions. (no special considerations except it is a trapped volume between the reservoir at the moment of rupture).

The question is what sort of heating/ cooling will be associated with the event?

I can visualize expansive cooling from the released reservoir volume, also, compressive heating from the arriving high pressurization. There may also be "shock wave" phenomena, true? There are two 90 degree "unoptimized" turns after the rupture disc before the tube termination, so friction and churning must be present. (perhaps putting a limit on "shock wave" effects?)

Which mechanism might dominate?
What would be a useful investigative approach to analyze the entire system? Time would seem to limit the measurement possibilities.

 

[Nidum]

I can't visualise the problem from your description .

Please post a clear diagram of the system .