A parametric model for real-time flickering fire

Fire is a complex natural phenomena involving chemical reactions and turbulent flow of hot gaseous products. Significant computer graphics research is devoted to modelling the turbulent dynamics of fire; however flicker which results from the chemical nature of fire has not been previously modelled. In this paper we present a technique that addresses both modelling of dynamics and chemical aspects of fire. We use a stochastic Lagrangian approach to model the dynamics. We formulate a simplified model of thermochemistry that mimics the behavior of models in combustion studies to capture the chemical aspects. The model is parameterized to enable control of flicker rate, flame height and number of flame brushes in the simulated fire. We exploit the programmability of graphics hardware for real-time rendering. The capabilities of the model are demonstrated via representative animations.

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