重气泄漏扩散试验研究综述  

A literature review:experimental studies on heavy gas dispersion

作　　者：陈莹[1] 蒋军成[1] 

机构地区：[1]南京工业大学城市建设与安全工程学院,南京210009

出　　处：《安全与环境学报》2009年第2期125-127,共3页Journal of Safety and Environment

基　　金："十一五"国家科技支撑项目(2006BAK01B03-3)

摘　　要：介绍重气泄漏扩散试验(包括全规模大型现场试验和实验室模拟试验)的研究进展。全规模大型现场试验的试验场景与真实场景一致,通过现场试验得到的数据可靠且可以观察到一些独特的试验现象。实验室模拟分为水槽模拟和风洞模拟,其中水槽模拟的可视化效果好,直观性很强。当水槽模拟采用盐水时,盐水流动速度小于重气,易获得其涡旋结构照片,而且试验在液体内部进行,无毒性或腐蚀性,比较安全。风洞试验和水槽模拟都不需要花费大量财力、物力且结果可靠,为数值模拟提供了数据。本文通过分析重气试验的研究现状,指出了风洞试验的研究方向。This paper is expected to introduce the latest advances in heavy gas discharging dispersion experimental studies, including fullscale field experiment and the lab-scale simulation experiment. As a matter of fact, lab-scale simulation can be divided into water simulation and wind tunnel simulation. Particular attention has been paid in this paper to the full-scale field experiments, of which we have made a detailed discussion. As we know, full-scale field experiment arrived at its heyday around 1980 for its advantage of good visualization. However, when we use salt water to proceed with the water simulation, it has been easy for us to get the photo of vortex structure for its slower flow velocity than heavy gas. On the contrary, if the experiment can be done in the internal water, it would be safer with no need to worry about the toxic and corrosive damage. The second part of this paper is dedicated to the description of the wind-tunnel experiment, which doesn＇t involve too much financial expenditure and material resource consumption. But its result is also reliable and provides data for the necessary numerical simulations. And, finally, we have made necessary description over the research status of wind tunnel experiment, which is in a position to suggest likely directions for the future studies in this way.

关 键 词：安全工程 重气 扩散 试验 

分 类 号：X701[环境科学与工程—环境工程]