Q: I am doing a dynamic upending of a spar. After a compartment gets "almost full" (99.99%) the flow rates and the heads change erratically. What is going on here?
REV 7.00

A: What you have here is a numerical problem. While the upending may be gentile, the internal pressure computation is not. In fact,

     P = C/V

where V is the volume of air. When a compartment get 100% full, V is zero and the pressure is large. You need a smaller time step to get good results here.