Coupling 3D Eulerian, Heightfield and Particle Methods for Interactive Simulation of Large Scale Liquid Phenomena.

Area of Science:

• Computer Graphics
• Computational Physics

Background:

• Simulating large-scale water phenomena presents significant computational challenges.
• Existing hybrid methods often limit particle use to surface effects like foam and spray.

Purpose of the Study:

• To develop an efficient and versatile hybrid method for simulating large-scale water phenomena.
• To enable dynamic switching between particle and grid representations for water bodies.
• To seamlessly couple grid-based and height field simulations for open water scenes.

Main Methods:

• Combines particle, 3D grid, and height field simulation techniques.
• Represents bulk water using both particles and a 3D grid, with dynamic switching.
• Utilizes a density field for coupling particle and grid water representations.
• Solves Shallow Water Equations on a height field for open water domains.
• Introduces novel coupling methods for seamless wave transition between domains.

Main Results:

• Achieved real-time or interactive rates for complex water simulations.
• Demonstrated effective simulation of phenomena like whale breaching.
• Successfully coupled distinct simulation domains (grid and height field).

Conclusions:

• The proposed hybrid approach offers an effective solution for real-time simulation of large-scale water.
• The dynamic representation switching and domain coupling enhance simulation fidelity and efficiency.
• This method advances the state-of-the-art in realistic water rendering for computer graphics.