FDS软件在有限空间机械通风模拟中的应用研究  

Study on application of FDS software in numerical simulation of forced ventilation in confined spaces

作　　者：杨春丽 刘艳 BENJAMIN TRUCHOT 李祥春[3] YANG Chunli;LIU Yan;BENJAMIN TRUCHOT;LI Xiangchun(Institute of Urban Safety and Environmental Science,Beijing Academy of Science and Technology,Beijing 100054,China;INERIS,Verneuil en Halatte 60550,France;China University of Mining&Technology-Beijing,Beijing 100083,China)

机构地区：[1]北京市科学技术研究院城市安全与环境科学研究所,北京100054 [2]法国工业环境与风险研究所,法国韦纳伊法-哈拉特60550 [3]中国矿业大学(北京),北京100083

出　　处：《中国安全生产科学技术》2021年第10期113-118,共6页Journal of Safety Science and Technology

基　　金：北京市劳动保护科学研究所青年英才计划(K120-09-03);北京市劳动保护科学研究所改革与发展专项(K120-13)。

摘　　要：为指导有限空间机械通风,使用FDS软件研究机械通风过程中供热有限空间内流场、浓度场、温度场等的分布规律,同时将FDS软件模拟结果与FLUENT软件所得模拟结果进行对比分析。结果表明:机械通风过程中,检查室内风速总体较大,管沟内风速相对较小;各测点O_(2)浓度、CO_(2)浓度最终恢复至正常的时间相同,可仅以O_(2)浓度恢复情况作为衡量通风效果的代表气体;采用FDS软件获得模拟结果与FLUENT软件较一致,但在风流的湍流细节方面FDS软件结果更理想。To guide the forced ventilation of confined spaces,the FDS software was used to study the distribution of flow field,concentration field and temperature field in the confined space for heat supply during the process of forced ventilation,and the simulation result were compared with those obtained by the FLUENT software.The results showed that during the process of forced ventilation,the airflow velocity in the examination room was generally high,and that in the pipe trench was relatively low.The time for the oxygen concentration and carbon dioxide concentration returning to normal finally at each measurement point were the same,and it could only take the recovery of oxygen concentration as the representative gas to measure the ventilation effect.The simulation results of FDS software were consistent with those obtained by FLUENT software,but the turbulent details of airflow could be better simulated by FDS software.

关 键 词：FDS软件 有限空间 机械通风 数值模拟 FLUENT软件 

分 类 号：X928.03[环境科学与工程—安全科学]