[Adyk]

Hi
I'm working on a viscoelastic multiphase case with the openFOAM toolbox "rheotool" and the solve "rheoInterFoam (it's like interFoam but for viscoelastic fluids).
I have a spheric-shaped viscoelastic fluid on a plate and want to see the effects on the relaxation-behavior when i change the forces. I started with g (9,81 and 19,62) in y-direction.
Now I'd like to have some kind of radial/tangential force, beginning at the center. Does anybody know, how i can define a force (or adjust F_g) like this?

And is there a way to calculate (and plot) the internal forces in the fluid/surface? I've seen the function "forces", but when I got it right, this calculates the forces at the defined patches and not in the fluid?

thanks for helping!