Is It Possible to Use CFD Modeling for Emergency Preparedness and Response?

Abstract

This paper provides a comparison of the results obtained by the FLADIS field experiments and the results of CFD modeling by Fluent 6.2. FLADIS experiments were carried out by the Riso National Laboratory (Rediphem database). Experimental trials were done with pressure liquefied ammonia. Meteorological conditions and source strength were deten-nined from experimental data and simulated using the CFD approach. The initial two-phase flow of tile released ammonia was also included. The liquid phase was modeled as droplets using discrete particle modeling, i.e., Euler-Lagrangian approach for continuous and discrete phases. Tile second part of this task was devoted to the inclusion of obstacles. High obstacles which cannot be modeled with increasing surface roughness were included. From the results is obvious that such obstacles influence the gas dispersion radically.