Hi everybody, I' m trying to realize a simple model of a bullet in a barrel. I am using FSI Module. I set an impulsive pressure at the inlet of the barrel (to simulate the explosion), so that the high pressure can push the bullet along the barrel. However, the pressure immediately go to 0, almost without reaching the bullet. It seems that there is a loss somewhere. Or maybe it is not correct to set an impulse at the inlet, because after the high peak I force the pressure to 0? Can anybody help me? Thank you in advance.
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