[Lazarus]

Thanks for your reply Ping.

I created dynamic pressure as a scalar function($Pressure - $HydrostaticPressureFlatVOFWave.) but i couldn't fully understand how to create cell face areas and multiply that areas by the dynamic pressure. Can you tell me how to do it?

[ping]

as i said above you create a new vector field function defined as $$Area * $DynPress
this creates a vector field of force on every wall face which you can view in a vector scene and sum in a report in the required axis direction

[Lazarus]

I did exactly what you said and finally obtained the hydrodynamic force

Thank you very much for your help.

[arm593]

Originally Posted by ping

you need to create your own force and moment reports by creating a special vector field function that multiply cell face area by dynamic pressure ( calculated as shown above by yannaos or your own subtraction of g * water depth from the static pressure)
then sum those face forces to get the total force
and for moments create another field fuction and multiply the face force by the radial distance from each face to the center of a coordinate system and sum that field

You mention a radial distance to a center. Is this defined by a position vector or a simple scalar?

[ping]

it is a simple scalar