Turbulent wind fields for gaseous phenomena

The realistic depiction of smoke, steam, mist and water reacting to a turbulent eld such as wind is an attractive and challenging problem. Its solution requires interlocking models for turbulent elds, gaseous ow, and realistic illumination. We present a model for turbulent wind ow having a deterministic component to specify large-scale behaviour, and a stochastic component to model turbulent small-scale behaviour. The small-scale component is generated using space-time Fourier synthesis. Turbulent wind elds can be superposed interactively to create subtle behaviour. An advection-di usion model is used to animate particle-based gaseous phenomena embedded in a wind eld, and we derive an e cient physically-based illumination model for rendering the system. Because the number of particles can be quite large, we present a clustering algorithm for e cient animation and rendering. CR Categories and Subject Descriptors: I.3.7 Computer Graphics]: Three-Dimensional Graphics and Realism I.3.3 Co...

• Type: Conference
• Year: 1993
• Where: SIGGRAPH
• Authors: Jos Stam, Eugene Fiume
• Keywords: Computer Graphics, SIGGRAPH 1993, Turbulent, Turbulent Elds, Turbulent Wind