摘要
为了研究列车车厢地毯散发VOC扩散状况,采用多组分和动网格耦合计算方法,分析车厢静态时VOC的扩散规律,及车辆运行和通风模式对VOC在车厢内扩散的影响。数值模拟结果表明,地毯散发的VOC向上和向侧边扩散,VOC向上扩散明显快于向侧边扩散;动态边界加快VOC在车厢内的扩散,在较短时间内使VOC扩散至整个车厢;不同进风速度对VOC扩散产生影响,随着进风速度增大,VOC在车厢内各方向上扩散波动增大。
In order to study the VOC diffusion situation in the train compartment, using coupling method of multi-component and dynamic mesh, to analyze diffusion rule of VOC as the compartment static state, and the influence of vehicles moving and ventilate mode to diffusion of VOC in the compartment. The numerical simulation results indicated that VOC diffuses upward and sidewise, upward diffusion is quicker obviously than sidewise; the dynamic boundary speeds up diffusion velocity of VOC in compartment, enables VOC to diffuse to the entire compartment in a short time; the import wind velocity should influence the diffusion of VOC, along with increasing of the import wind velocity, VOC diffusion fluctuation increase in the compartment in various directions.
出处
《装备制造技术》
2013年第8期107-109,117,共4页
Equipment Manufacturing Technology
关键词
VOC扩散
列车车厢
数值模拟
多组分
动网格
VOC diffusion
the train compartment
numerical simulation
multi-component
dynamic mesh
