Create Fluid in Realflow by João Felix, Portugal


To facilitate the calculation, I created a daemon called ~Volume. He kills all the particles that go out of the box.



Now we have everything. If we click on Action button you will see the particles are not interacting with the geometry. To make that happen, go to the Scene Tree. In scene tree make a relationship between everything, so objects interacts with the particles. In this case, the glass, the plane, the gravity daemon and the ~volume daemon.



IMPORTANT: Every square on the grid has 1m x 1m and the scene scale is very important for physical calculations. We might need to change it. In my case it’s 0.2 when the default is 1. Try not to use the exact scale because the object is too small and realflow has some problems with that.


Before we click on the Action button, let’s “tell” realflow to save our particles. To do that we go to the Export Central and put a little check on the circle emitter.


The moment you’ve been waiting for…click on Action. Let the simulation calculate, drink some coffee, and come back. Everything ends but if you are not happy with the result, “play” with the emitter settings and the scene scale. Now you are thinking: But I don’t want particles, I want a mesh! Calm down, that is exactly what we are going to do next.

Click on Create mesh button on Meshes panel. Now click on Build mesh to see the mesh in the realflow viewport.


These are the mesh settings that I’ve used in this scene:


Now we have to export the mesh. Again to the Export Central and this time we check the mesh. Click on the Build mesh on play and next we click on play! Our mesh is ready! Let’s go back to 3ds Max and prepare our scene for rendering.