FXPHD-HOU280 Impact Based Fluid Effects in Houdini by Alvin Yap

This course is a straight-up, practical guide to building a full open ocean simulation in Houdini. You’ll go from prepping geometry to rendering with Redshift and doing basic comp in Nuke. It’s all about getting a realistic, portfolio-ready shot without the fluff.

🎯 What you’ll learn

• Prepare simulation geometry, including creating watertight surfaces and subframe data.
• Set up and run a FLIP fluid simulation using the Flat Tank.
• Generate and match an open ocean using Ocean Spectrum tools.
• Create custom white water elements (foam, spray, bubbles) with POPs.
• Render the final simulation with Redshift and composite it in Nuke.

✅ Requirements

• Skills: Basic understanding of Houdini’s interface and core concepts.
• Tools: A 3-button mouse.
• Hardware: A dedicated GPU is recommended for rendering with Redshift.

📝 Description

This isn’t a theory-heavy lecture. It’s a hands-on walkthrough of a real production scenario. You start by checking your geometry to make sure it’s watertight and ready for simulation—a step that saves you headaches later. Then, you jump straight into the FLIP Flat Tank to build the main fluid sim.

The course doesn’t stop at the main water surface. You’ll learn a clever trick: using the white water solver only for the foam layer, and building a custom POPs simulation for the spray and bubbles. This gives you way more control over the look of your secondary elements.

Finally, you’ll take everything into Redshift to create materials and render passes, then assemble the final shot in Nuke. You’ll even learn how to create custom AOVs to fix specific areas in the comp, like getting a clean defocus effect. It’s a complete pipeline from start to finish.

🧑‍🎓 Who this course is for

• Intermediate Houdini artists who want to specialize in fluid effects.
• VFX artists looking to add a realistic ocean simulation to their reel.
• Anyone who wants to see a complete, production-focused workflow from sim to final comp.

🧑‍🏫 About the Author

Alvin Yap started as a 3D Generalist before interning at Side Effects. He’s been using Houdini since 2008 and has worked at major studios like Rising Sun Pictures, Framestore, and Sony Pictures Imageworks. He brings that real-world experience to this course.

🏁 Final Result

• A complete, rendered open ocean impact simulation with custom white water elements, ready for your demo reel.