Dynamic simulation method of toxic gas diffusion in complex geographic environment

The traditional simulations of the toxic gas diffusion are suitable for the ideal and stable environment, but the factors in the complex geographic environment are not considered comprehensively. In this paper, simulation method for the gas diffusion considering the complex geographic environment, which includes wind field, terrain surface, dry deposition and decay of the gas, was designed by using the geographic grid computing. With the applications comparison for the radioactive gas diffusion between in ideal stable environment and in complex geographic environment, the results showed the method in this paper is efficient, intuitive and more applicable for the simulation of the gas diffusion.