Tank blowdown (transient)

Objective: model a pressurized tank blowing down through an orifice over time.

Steps

1. Set the tank's initial pressure to 3000 psia.
2. Add a sharp-edged orifice to a vent boundary.
3. Switch the deck to transient; set t-end and dt.
4. Solve.

Expected result

Tank pressure and temperature decay over time. The orifice chokes early in the blowdown, then unchokes as upstream pressure falls.

Transient · Backward-Euler · compressible orifice flow