Simulation of IR smoke screen based on physical model

Infrared smoke screen plays an important role in modern battlefield simulation. We put the velocity, concentration, temperature, pressure and obstacles on 3D grids in smoke screen. To enrich the characteristics of smoke screen, we simplified and improved the Navier-Stokes equations. And we add smoke screen curl constraining force, gravity, buoyancy to truly represent the turbulent effect of smoke screen. In terms of smoke screen rendering, we consider the influence of atmospheric transmittance and atmospheric path radiation on smoke infrared simulation to make the imaging effect more realistic. At the same time we use the CUDA parallel computing platform, which greatly reduces the calculation time, to improve the real-time performance further.