Reply To: Ansys Fluent OR Aqwa ?

[Joël Danton]

Concerning the forces results: The  horizontal forces are accurate enough compare to results obtained by an other software, but not for the verticale forces. Indeed if we focuse only on the bottom surface, when I ask for the lift force on this face in the report definition, the results is pretty big (~20000N). Thus, when I try to exctract only the force induce by static pressure (density*g*depth), by using EXPRESSION "AeraAve(StaticPressure,[bottomBC])*Surf.[m^2]" the plot shows almost the same results (~20000N), which  lets believe that the vertical force is induced mainly by the static pressure. When plotting the dynamic pressure (1/2*density*velocity^2) by the same way (EXPRESSION "AeraAve(StaticPressure,[bottomBC])*Surf.[m^2]"), it appears that the force is very low (~100N). Though, what was expected is that the dynamic pressure should induces at least a force oscillation of +/- 1000 N around 0 N. Do you know how could I easily plot this force induced by dynamic force only and that is maybe more correct than what I did ?