Hello,

I am simulating gas flow from a high-pressure (700 bar) to a low-pressure container as shown in the attached figure. The red curve shows the pressure curve obtained from the testing, while the blue curve shows the pressure curve of the lo-pressure container. I tried to change parameters and simulate, but still I end up getting more or less linear pressure curve from the simulation. I am unable to understand the root cause for the deviation.

2. After 30 to 35 ms the pressure of high-pressure container has to be 300 - 400 bar from the testing. In simulation it reduces just to 630 bar which is not acceptable.

Mass Flow Rate (MFR) has to be close to 500 g/s . This value is matches with the simulation. Only pressure behaviour is not matching.

Please find attached image for the simulation and problem details.

Any lead on suggestions are highly appreciated.

Many thanks in advance.

Naveen