Dynamic Flow – Addon Documentation

Overview

Dynamic Flow is a Blender addon that creates real-time procedural water and surface flow using a grid-based system.
It does not use Blender’s Fluid Simulation and requires no baking or caching.

The addon is designed for fast environment creation, terrain water, shorelines, islands, and real-time previews.

Installation

1. Install the addon via Edit → Preferences → Add-ons → Install

2. Enable Dynamic Flow

3. The Dynamic Flow panel will appear in the viewport sidebar

Creating a New Simulation

1. Open the Dynamic Flow panel

2. Click Create New Simulation

3. The addon will automatically:

   • Create a new Dynamic Flow Grid domain

   • Initialize the simulation system

   • Prepare all required Geometry Nodes internally

This step must be done once per simulation.

Collision Setup (IMPORTANT)

Dynamic Flow uses collections to manage collision objects.

Step 1 – Create a Collision Collection

1. In the Outliner, create a new collection
   (Example name: DynamicFlow_Collisions)

2. Add all objects that should interact with the water into this collection
   (rocks, terrain, islands, obstacles, etc.)

Step 2 – Assign the Collision Collection

1. In the Dynamic Flow panel:

   • Set Collision Collection to your newly created collection

2. (Optional) Assign a specific Collision Object if needed

The simulation will now react to all objects inside the selected collection.

Simulation Settings

Domain

• Dynamic Flow Grid
  Defines the simulation area and resolution.

Grid Settings

• Voxel Size
  Controls simulation detail. Smaller values increase quality but reduce performance.

• Grid Resolution
  Overall simulation density.

Flow Controls

• Flow Velocity
  Main direction and speed of the water.

• Noise Velocity
  Adds natural variation to the flow.

• Noise Scale
  Controls the size of noise patterns.

Surface Controls

• Surface Height Displacement
  Controls wave height and surface motion.

• Blur Displacement
  Smooths the surface and stabilizes movement.

Foam & Water

• Foam Generation Rate
  Controls shoreline and collision foam intensity.

• Add Underwater
  Enables underwater shading support.

• Color Water
  Quick color control for water appearance.

Physics

• Pressure Calculation
  Controls how strongly the flow reacts to obstacles.

• Damping Overall Velocity
  Controls energy loss over time.

• Freeze Collision
  Locks collision data for improved performance.

Recommended Workflow

1. Create your terrain or island mesh

2. Add a water plane

3. Click Create New Simulation

4. Create a collision collection and assign it

5. Adjust flow speed, noise, and foam

6. Fine-tune resolution for performance

Performance Tips

• Use lower grid resolution for large scenes

• Freeze collision once objects stop moving

• Increase voxel size for faster previews

• Avoid unnecessary collision objects