Simulating a Shipping Container Falling into the Ocean | Houdini & Karma Render

How does a massive shipping container behave when it crashes into the ocean? 🌊🚢

In this simulation, I experimented with different fluid dynamics, white water setups, and rendering techniques in Houdini to create a realistic ocean impact. While the final result didn’t fully capture the cinematic feel I aimed for, it was a valuable learning process.

By testing both manual white water setups and Houdini’s built-in solver, I explored different approaches to balance foam, splash, and wave behavior. This project helped refine techniques for large-scale water simulations and their interaction with solid objects.”*

Adjusting Container Buoyancy

🔍 Observations:

✔ Initially, I animated the Density parameter to gradually increase, expecting the container to sink after floating for a while.
✔ However, this had no noticeable effect on buoyancy.
✔ As an alternative, I adjusted Feedback Scale, which successfully influenced the container’s interaction with the water and achieved the desired sinking effect.

Controlling the sinking behavior of the shipping container in Houdini.

White Water Generation Using Speed & Turbulence

🔍 Observations:

✔ I extracted particles based on water speed and vorticity to simulate splashes and foam.
✔ This method worked well for distant shots, where foam appears as airborne spray.
✔ However, in close-up views, it failed to generate foam on the water surface, causing an unnatural look.

Testing white water creation based on velocity and turbulence in Houdini.

Combining Custom White Water with Houdini’s White Water Solver

🔍 Observations:

✔ To fix the issue where foam only formed in the air and not on the water surface, I ran an additional White Water simulation using Houdini’s built-in solver.
✔ I then combined both foam simulations to balance airborne splashes with surface foam.
✔ This hybrid approach improved the overall realism, making the interaction between the container and water look more natural.

Enhancing foam realism by merging custom and Houdini’s White Water Solver results.

Final Rendering with Karma

🔍 Observations:

✔ The final render was done using Karma Renderer.
✔ Unfortunately, the result didn’t fully match my expectations in terms of realism.
✔ I realized I need to explore more advanced shading techniques to achieve a more natural look for water and foam.

💡 Next Step: Studying Karma shading and water rendering techniques to improve future simulations.