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Re: dynamic of pressure


Hi Mathias,
I have doing like this.
It is not an instability!

My simulation didn’t realise the time changement of state : when we open the valve we obtain a step changement of pressure. This is not realistic value. When opening the valve pressure seem change immediatly…
We measure it on a real system : the time changement is about 0.15s this is not immediatly change.

I use BGK to calculate but maybe I do use MRT to avoid this phenomen ?