For this part of my blender particle experiments I made some fluid particles that are floating around an invisible sphere
To make the particles float on the spherical surface I added a sphere and made it invisible. Then I added a forcefield and set the strength to -1. I turned of the gravity for the particles and made the sphere a collision object.
you can download the blend file here
Blender particle experiments - black fluid
flow field fluid
cubesurfer experiment 6 - inclined plane