[Orville]

Hello.. I am trying to find the total resistance coefficient of a trimaran.. As we can see, the resistance coefficient rises on Froude number 0.5 and then decreases gradually.... That's because of the hump of wave making resistance.. But in my case, the total resistance coefficient is not increasing on Froude number 0.5... It's decreasing all over the Froude numbers.....I have tried different boundary conditions, turbulence model and schemes ..but it's not working... I'm using Ansys fluent=> VOF method=> open channel=> Pressure inlet & outlet...Can you give me any idea on how to fix this?