Practical animation of liquids

ABSTRACT

We present a general method for modeling and animating liquids. The system is specifically designed for computer animation and handles viscous liquids as they move in a 3D environment and interact with graphics primitives such as parametric curves and moving polygons. We combine an appropriately modified semi-Lagrangian method with a new approach to calculating fluid flow around objects. This allows us to efficiently solve the equations of motion for a liquid while retaining enough detail to obtain realistic looking behavior. The object interaction mechanism is extended to provide control over the liquid s 3D motion. A high quality surface is obtained from the resulting velocity field using a novel adaptive technique for evolving an implicit surface.

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Index Terms

• Computing methodologies

  • Computer graphics

    • Animation

  • Modeling and simulation

    • Model development and analysis

      • Model verification and validation

    • Simulation types and techniques

      • Simulation by animation