Simulation Of The Evaporation Dispersion Of Chemical Accidental Spill In Waterway Transport

This thesis is intended to study and analyze the advantages and disadvantages of the recent chemical vapor dispersion simulation method, which includes experience formula, dispersion models and numerical simulation. The conclusion is that it is more suitable to adopt the dispersion models in the accident emergency response. According to the facts of chemical spill accidents in waterway transport, systematic analysis is made on the suitable dispersion models and source strength calculation models of multiple spilled substance, resource and environment respectively, so as to decide the poison and fire & explosion danger area of an accident through the way of dispersion simulation. To resolve the problem to the calculation of spill amount from tanks, calculation formulas on various types of tanks were worked out; at the same time, research is carried out on the source strength calculation of mixtures with regard to the possible spillage of chemical mixture in waterway transport. For the sake of convenient application, a computer software for the simulation of dangerous area is developed which can provide great assistance to the decision-making of emergency response and reach the target of reducing the damage of the life, property and environment to the smallest degree.