Environ Monit Assess 2021 Sep 14;193(10):650. Epub 2021 Sep 14.
Digital China Research Institute (Fujian), Fuzhou University, Fuzhou, China.
In view of the advantages of CFD technology in the simulation of small and medium-scale chemical hazard diffusion, one near-field prediction model of chemical hazard diffusion named CHDNFP is constructed based on CFD technology, and the accuracy and efficiency of the model are improved by improved differential evolution algorithm (DEA) and fireworks algorithm (FWA). Firstly, based on the component conservation equation, momentum conservation equation, and turbulence control equation, CHDNFP model is constructed, whose basic solution process is proposed from three aspects: non-uniform mesh refinement in diffusion space, model discretization, and iterative solution of control equation. Secondly, comprehensive considering the global search ability, local search ability, and convergence characteristics of integrated DEA and FWA, a hybrid optimization algorithm IDEFWA is designed, which is suitable for predictive model solving. Read More