Research On Fire Simulation Based On Improved Particle System

Generating a visually convincing image especially for those irregular fuzzy objects is one of the most challenging and difficult problems in computer graphics. In irregular fuzzy objects such as the flame, smoke, cloud, etc., the simulation of fire is of a great challenge because the completeness of fire. Though computing capability of the computer and memory ability have been greatly improved at present, reproducing all details of fire that can't be intact yet, so according to different application directions, study fire and its dynamic behavior have important meanings.Firstly, this paper analyzed and summarized various algorithms of the domestic and international simulation fire at present, then introduced the basic theory and application of fire particle system.Secondly, according to the key problem of real time and reality in fire simulation based on particle system, a new fire model based on particle system was proposed in this paper. The position of new particles are initialized with normal distributing, then use the relation function of continuing frame to generate the next frame position in order to decrease the implementation time. To increase the controllability, we also introduce velocity field to simulate the flickering of fire. In order to increase the reality and decrease the implementation time, we used the texture mapping technology to improve the effect and efficiency of rendering, and the texture were sequence key frame sampled from real fire video record. The number of particles was very large. We introduce advanced particle system to mange the particle system, and let it controllable and flexible. The exiting three-layer hierarchy of the particle system was extended to a four-layer hierarchy. The improved fire system was composed of particle class, particle system class, particle system family classand particle system manager. It improved the interaction and controllability.Finally, we develop a demo system based on our algorithm and show the results generated by our simulation algorithm. Experimental results show that our algorithm can produce the effect of fire looks realistic. The results of the experiment also show that the frame rate of this improved particle system is 30fps at least. It can be used in real-time application.