Based on my work for ARMEDANGELS X Wikipedia, i further refined my Honey FLIP setup. I improved the adaptive viscosity based on the fluid's velocity, which was inspired by the non-Newtonian properties some types of honey exhibit.
Additionally, i added a custom stick-on-collision force. The vanilla stick force present in the FLIP solver did not yield satisfying results, as it only blends the fluid's velocity with the collision velocity based on distance. Instead i projected the fluid's position onto the nearest collider surface point, influenced by the fluid's velocity. I then used this information to create an attraction force between the fluid and the collider. While technically not being "physically correct", as i add velocity to the equation, the results were satisfying as the honey now coats the spoon evenly and shows more dynamic behavior instead of slowing down and coming to a rest too quickly.
Finally, I created a post-sim effect, that adds stretching and deforming bubbles to the already existing FLIP simulation. Decoupling these effects means greater art directability because the whole FLIP simulation does not have to be re-cached again when the bubble pattern is changed.
I was able to talk about my setup in great detail for the YouTube channel and e-learning platform Entagma! Tune in to find my explanations and download the scene files. Part 1 covers the custom stick-on-collision force and adaptive viscosity; if demand is high enough, we will do a Part 2 where I talk about the stretchy bubbles solver.