Lift and drag force calculation

Dear Paraview users,

I am trying to calculate lift and drag forces on a microfluidic 2D droplet traveling in oil channel. I followed an online tutorial “”. It didn’t work for me. I didn’t get any force value in X and Y direction. In Z direction I do got some values whose trend was similar to pressure field. And I don’t think forces should look line this on droplet. I am attaching screenshot of what I did in paraview. I am also attaching one vtu file, it has velocity and pressure field. Can someone help me with how to calculate these forces?

Thank you.

bessel-300.vtu (2.9 MB)