交通信息与安全2017，Vol.35Issue(6)：60-66,7.DOI:10.3963/j.issn.1674-4861.2017.06.009
燃料电池船舶舱内氢气泄漏数值模拟研究
A Study on Numerical Simulation of Hydrogen Leakage in Cabin of Fuel Cell Ship
摘要
Abstract
A fuel cell ship carries a large amount of hydrogen as fuel,which brings threat to safety of the ship owing to characteristics of hydrogen as easy to leak or explode.A 3D geometric model of fuel cell cabin from a target ship is established to develop a scenario of hydrogen leakage happening in the cabin.On the basis of this model,the leakage rate of hydrogen from pipeline is computed by defining an ideal gas model and leakage parameters.Afterwards,transient leakage and diffusion processes of hydrogen in the fuel cell cabin are simulated by fluid computation software Fluent and gas diffusion equations.Finally,distribution law of hydrogen concentration and dispersion trends are compared under different ventilation conditions of open/close doors and air vents.The simulation results show that the hydrogen concentration is higher in the top four corners of the cabin,which are the optimal places for hydrogen detection.Moreover,keep doors open can reduce the final concentration of hydrogen by about 20％ under the condition of natural ventilation.When ventilation rate of single vent is 6 m3/s,the dispersion mole fraction to other cabins can be kept under a safety level of 4％,while concentration of hydrogen in the cabin can be kept at a low level.Continually increase the ventilation rate has less effectiveness to lower concentration of hydrogen.关键词
船舶安全/燃料电池船舶/氢气泄漏/氢气扩散/通风条件/数值模拟/浓度分布Key words
ship safety/fuel cell ship/hydrogen leakage/hydrogen dispersion/ventilation conditions/numerical simulation/concentration distributions分类
交通工程引用本文复制引用
李峰,袁裕鹏,严新平,刘翰林..燃料电池船舶舱内氢气泄漏数值模拟研究[J].交通信息与安全,2017,35(6):60-66,7.基金项目
中央高校基本科研业务费专项资金项目(2016IVA018)、武汉理工大学自主创新基金项目(2017-ND-B1-06)资助 （2016IVA018）
