Water-spray system for toxic cloud dispersion

被引：0

作者：

Malet, J ^{[1
]}

Corieri, P ^{[1
]}

Buchlin, JM ^{[1
]}

机构：

[1] Von Karman Inst Fluid Dynam, Environm & Appl Fluid Dynam Dept, B-1640 Rhode St Genese, Belgium

来源：

PROCEEDINGS OF THE 14TH FRENCH CONGRESS ON AEROSOLS CFA 98 | 1998年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The aim of the present experimental and numerical study is to evaluate the efficiency of water spray curtains used to mitigate the consequence of accidental releases of toxic and/or flammable gases. A liquid curtain is composed of rows of sprays constituted by polydispersed liquid droplets moving within the gas. The mechanical action of the spray results in gas entrainment and turbulence enhancement, which promote the dilution and the heating of a cloud formed by a toxic cold and dense gas release. The efficiency of these actions depends on the spray characteristics, atmospheric conditions and topography. The results obtained for flat-fan sprays, produced with industrial nozzles, are presented here. "Flat-fan" sprays seem to be more efficient than "full cone" spray for the dispersion of a dense cloud. Influence of the wind on the water curtain efficiency is evaluated experimentally and numerically. The results show that wind can reduce the action of a water curtain on dense cloud dispersion. Numerical modelling mimics satisfactorily the experimental tests. It is concluded that CFD simulation provides a good estimate of the water curtain effect.

引用

页码：131 / 136

页数：6