Research Of Smoke Simulation Technology Based On Physical Model

In computer graphics, the simulation of the smoke began in the eighties of the twentieth century, however, it is still significant and challenging. The traditional particle system and the texture mapping are hard to be competent for the complicate smoke simulation with the high requirement of realistic effects. So, the physics based method is employed in this paper. We build the real physical model of the smoke motion from its inner physical character, then solve the physical model with numerical calculatio,Get Smoke movement in the state of motion parameters of each moment and, based on the parameters of this state by drawing the smoke movement in a picture of each.This paper, the non-viscous incompressible fluid flow as a physical model of smoke movement, and this physical model by adding a binding method of achieving control of smoke movement. In this physical model of the numerical solution methods, finite difference method in numerical solution of model equations, the discrete non-staggered grid to solve the region can avoid the introduction of a staggered grid and interpolation. In addition, semi-Lagrangian method using the linear, fast linear solvers and various simplified and fast algorithm to reduce the computation in the constraint. Using the above simulation of smoke movement, smoke can get a more realistic visual effects and better speed performance.The smoke movement control, the smoke movement based on the physical model and the driving force by applying attractive way to achieve the flow of smoke in the process of rapid and efficient formation of the shape of the designated person. Attractive role is to make the smoke flow model, and to prevent the model of smoke to get out. Internal drive model will drive the smoke from the high density area to low density smoke spread, smoke can quickly fill to fill the entire geometry model. Experimental results show that the method improves the controllability of the shape of smoke, the operation more convenient and efficient real-time simulation of a realistic smoke animation.