View-dependent adaptive cloth simulation

This paper describes a method for view-dependent cloth simulation using dynamically adaptive mesh refinement and coarsening. Given a prescribed camera motion, the method adjusts the criteria controlling refinement to account for visibility and apparent size in the camera's view. Objectionable dynamic artifacts are avoided by anticipative refinement and smoothed coarsening. This approach preserves the appearance of detailed cloth throughout the animation while avoiding the wasted effort of simulating details that would not be discernible to the viewer. The computational savings realized by this method increase as scene complexity grows, producing a 2× speed-up for a single character and more than 4× for a small group

Visual Simulation of Multiple Unmixable Fluids

International audienceWe present a novel grid-based method for simulating multiple unmixable fluids moving and interacting. Unlike previous methods that can only represent the interface between two fluids (usually between liquid and gas), this method can handle an arbitrary number of fluids through multiple independent level sets coupled with a constrain condition. To capture the fluid surface more accurately, we extend the particle level set method to a multi-fluid version. It shares the advantages of the particle level set method, and has the ability to track the interfaces of multiple fluids. To handle the dynamic behavior of different fluids existing together, we use a multiphase fluid formulation based on a smooth weight function

Computer‐simulated experiments and computer games: A method of design analysis

This paper describes a new research programme to design computer‐simulated experiments in the field of fuels and combustion, and describes a method of categorization based on a taxonomy proposed by Gredler. The key features which enhance science content and process skills are identified The simulations are designed to be as realistic as possible, and are built using three‐dimensional computer‐aided design, rendering and animation tools, with the intention of creating an interactive virtual laboratory on the computer screen. A number of computer games are also categorized against the computer simulations and the same taxonomy for comparison. The paper then describes how designers of computer simulations can add to their own learning by retrospectively analysing their own simulations