Improving water flow simulation and heatmap feedback in GH

[Alessio_Perna]

Hi everyone,

I’m working on a Grasshopper setup to study water flow on custom panel geometries. At the moment I’m using particles with gravity and mesh collision to visualize runoff and accumulation areas.

I’d like to improve the behavior of the particles so the simulation can better represent slowing, temporary retention, local stagnation, or different surface responses depending on geometry or material properties.

I’m also trying to extract useful feedback from the simulation, such as heatmaps showing flow paths, accumulation zones, or particle residence time on the surface, so I can compare different geometries.

I’m attaching the current definition and a couple of screenshots showing the panel and the particle behavior. Any suggestions about workflows, plugins, or alternative strategies would be really helpful.

Thanks!

panel try.gh (111.7 KB)

[Ali_Najmaei]

Hi . First of all I think you should add Mesh Sphere component for the visualization of the water drops .
Then for the water path , you can simply use this kind of algorithm :