2021 Volume 9 Issue 1 Pages 20-32
The expression of flames using computer graphics is frequently required as a familiar phenomenon. Various colors, including red and blue, can be seen in real flames. However, the combustion reaction in a real flame is too complex, involving thousands of chemical reactions to render interactive simulations. In this study, the authors constructed a novel combustion reaction model for expressing realistic flames with simplified chemical reactions of complex combustion. To achieve interactive physicochemical simulations of flames, fluid physics simulations were applied using the position-based fluids method. In the proposed combustion model, the combustion reaction is represented as five dominant chemical reactions. Opposed to the conventional methods, the proposed model can reproduce the blue and red regions of the flame. The proposed flame simulation method can be operated at approximately 20 frames per second or more, making interactive rendering possible.
