Rapid simulation and visualization analysis of liquid ammonia tank leakage risk

For the complex calculation and analysis problems existing in the liquid ammonia tank leakage and gas diffusion simulation, by selecting appropriate gas diffusion model and writing a program to simulate and analyze the spread of dangerous gas, This article could draw the ammonia diffusion concentration distribution, and the hazardous areas of ammonia diffusion could be divided accurately and rapidly, then used the program to simulate and analyze the effects of the factors such as wind velocity, ground roughness and liquid ammonia leakage rate on ammonia diffusion. The results proved that when wind direction was in line with the direction of leakage source, ammonia diffusion distance and the hazardous areas showed a trend of decrease with the increase of wind velocity; Ammonia diffusion distance decreased with the increase of ground roughness in the direction of down-wind; Ammonia diffusion distance and hazardous areas increased with the increase of liquid ammonia leakage rate. (c) 2014 The Authors. Published by Elsevier Ltd.