关键词: 烟雾模拟, Navier-Stokes方程, 速度场, 浓度场, 流体力学

Abstract: An algorithm based on fluid dynamics equations is proposed，and it simulates three-dimensional realistic smoke by Euler equations.It establishes physical model of smoke fluid filed in order to ensure reality in the human vision by Navier-
Stokes equations.Smoke fluid field is divided into three-dimensional grid space，and each center point of cubic grids is defined by the distribution of velocity field;Finally，smoke density in each pixel of the whole image can be accessed by linear interpolation.Smoke simulation techniques will be used to display images especially to generate images to dissipate smoke in the human vision，which can get satisfactory results of simulation.

Key words: smoke simulation, Navier-Stokes equations, velocity field, density field, fluid dynamics