Masoud 14 Posted April 18, 2020 (edited) Hello; In Houdini 16.5, I would like to add "viscosity" to a "Particle Fluid" simulation using a noise pattern, so in DOP I add a "POP-VOP" node (and AANoise in it ... ) after "Source Volume" which doesn't work. Where could I apply noise to the viscosity? Thanks for helping. Viscosity.hip Edited April 18, 2020 by Masoud Share this post Link to post Share on other sites
thebrettwalter 3 Posted April 18, 2020 bypass the fit and you got noisey viscosity.... looks like your fit is pushing visc values into positive ++ Share this post Link to post Share on other sites
Masoud 14 Posted April 18, 2020 26 minutes ago, thebrettwalter said: bypass the fit and you got noisey viscosity.... looks like your fit is pushing visc values into positive ++ I think I should use the "fit" because "Anti-Aliased Noise" creates an output from -0.5 to 0.5 and I also need the viscosity from 1 to 500. Share this post Link to post Share on other sites
thebrettwalter 3 Posted April 18, 2020 i think by the scale of your generated geometry, with such high values multiplying a low frequency noise pattern you're not gonna see a lot of variation. Bind your visc out to Cd to visualise your noise pattern in dops. Share this post Link to post Share on other sites
