Reply To: Ansys Fluent OR Aqwa ?

[Rob]

For a transient there's the time step convergence (ie does each step converge) and have the monitors reached any form of repeating pattern. The latter may be much more difficult if there are several transient effects with different frequencies, and some cases never exhibit a perodic result. 

Re the above, if you correct to the mean force does that give a sensible answer? I suspect you've got a hydrostatic effect in addition to any slamming forces. We (staff) are also limited in what level of input we can provide - ie it's limited to what's in the manuals and "public knowledge".