传染病员救护车病员室模拟气溶胶流动仿真与实验研究

介绍了装有负压净化装置的传染病员救护车的整体结构与功能设计。以CO2气体为模拟有害气溶胶污染物,运用两相流动模型计算其在救护车病员室内的流动特征与分布状态,并通过试验进行了验证。结果表明:救护车病员室内的CO2浓度分布与流场结构有利于细菌、病毒等气溶胶污染物通过负压净化装置排出病员室,影响气溶胶流动特征的主要因素是门窗缝隙的位置和密封程度。

The experimental investigation and simulation of substituted aerosol flow in the compartment of the ambulance for transporting infectious patient

The ambulance with the exhausting air cleaner, which is used for transporting infectious patient, is briefly stated in terms of its overall structure and function design. The infectious aerosol flow pattern and distribution in the ambulance's compartment are simulated by a two-phase flow model, and tested by carbon dioxide which is used as a substituted aerosol contamination source. The result indicates that the position and sealing of the gaps between the windows and between the doors are the main factors to determine the character of the aerosol flow. The concentration distribution of carbon dioxide is rational, which is helpful to exhaust the aerosol contaminants through the exhausting air cleaner and to suppress the diffusion of the contaminants in the front and back parts of the compartment.