How will this post help me? Can you help me? How to get rid of the negative pressure in the center? The inlet flow rate is 5 liters/second. Discharged to the atmosphere (into the container but from above, so the pressure is atmospheric, because the container is not filled). At the second inlet, the pressure is also atmospheric. The experiment is such that water is supplied at a flow rate of 5 l / s, pressure gauges are installed and they measure how air is sucked in from the vacuum inside the chamber and water is thrown into the tank.