Core Fluid

A Hybrido setup is a matter of just a few clicks. The basic scene we create here will be the starting point for various workflow simulations with Hybrido's secondary fluids (splash, foam, etc.).

The Environment

All settings, described here and under "The Hybrido Fluid Setup", are located under the different nodes' → “Node Params” panels.

Start with a “Cube” node from the “Objects” shelf. Under → “Nodes” double-click on “Cube01” and rename the node to “Container”:

Node > Scale > 10 | 10 | 10
Volume > Volume mode > Solid outside
Hybrido Interaction > Grid friction > 0.0005

Add another cube:

Rename it to “Emission object”.
Set its horizontal “Scale” values to 10 and 3.0, height is 3.5 metres.
Move the cube with W key or the “Position” settings until it looks as shown below (blue box).

We also want some collision objects:

Create four “Cylinder” objects as seen above or or import (Ctrl/Cmd + I) them from your 3D program.
Apply different scale settings and spread them inside the “Container”.
Make sure that they are not inside the “Emission object”.
Rename them to “Pillar01” ... “Pillar04”.

Now we need two daemons from the appropriate shelf:

Gravity
k Volume
k Volume > Fit to object > Container

This is the basic environment where the fluid simulation is going to take place. The container acts like a pool, the “Emission object” node defines the water volume. The → “k Volume” daemon will remove escaping particles.

The Hybrido Domain Setup

Go to the “Hybrido” shelf and add the following nodes:

Open Domain
Emitter
The emitter requires an object where the fluid is created – choose “Emission object”.

That's already everything and we can start with the domain's settings:

Grid > Cell size > 0.1
Creation mode > Dense will speed up the simulation.
Particle Sampling > disable all “control” options, because we want to keep the number of particles constant throughout the simulation.

Let's proceed with the “HY_Emitter01” node:

Under “Object” you should see “Emission object”.
Surface particle sampling > 3
Core particle sampling > 3
These values are applied once at the beginning of the simulation and create 3 x 3 x 3 = 27 particles per cell.

When you simulate your viewport should look similar to the first image above. We have created a collapsing water column that crashes against the pillars and the container's inner walls. These interactions are responsible for the impressive splashes.