Experimental Study on Effects of Ambient Pressure on Spray Characteristics of Water Mist

蔡昕; 王喜世; 廖光煊

doi:10.13409/j.cnki.jdpme.2012.02.006

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Experimental Study on Effects of Ambient Pressure on Spray Characteristics of Water Mist

更新时间：2025-12-11

- Experimental Study on Effects of Ambient Pressure on Spray Characteristics of Water Mist
- Vol. 32, Issue 2, Pages: 235-241(2012)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2012.02.006
  CLC： U892
- Published：2012
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[1]蔡昕,王喜世,廖光煊.环境压力对细水雾喷雾特性影响的实验研究[J].防灾减灾工程学报,2012,32(02):235-241.

蔡昕, 王喜世, 廖光煊. Experimental Study on Effects of Ambient Pressure on Spray Characteristics of Water Mist[J]. 2012, 32(2): 235-241.
[1]蔡昕,王喜世,廖光煊.环境压力对细水雾喷雾特性影响的实验研究[J].防灾减灾工程学报,2012,32(02):235-241. DOI： 10.13409/j.cnki.jdpme.2012.02.006.

蔡昕, 王喜世, 廖光煊. Experimental Study on Effects of Ambient Pressure on Spray Characteristics of Water Mist[J]. 2012, 32(2): 235-241. DOI： 10.13409/j.cnki.jdpme.2012.02.006.

摘要

雾滴的粒径分布、喷雾强度、雾滴动量及雾场的分布形式等喷雾特性

直接影响细水雾的灭火性能。本文通过研究压力漩流雾化实心锥及空心锥喷嘴在不同环境压力下的喷雾特性

揭示了环境压力对细水雾喷嘴流量系数及其雾场分布的影响规律。实验结果表明:环境压力越小

雾滴越向雾场锥面集中

雾场边缘区域的喷雾强度越大

而中心区域喷雾强度随之减小;环境压力对细水雾喷嘴流量系数则无明显影响。

Abstract

The droplet size distribution

spray intensity

droplet momentum and droplet distribution mode are key factors that directly influence the fire-extinguishing efficiency of water mist system.This paper researches the effects of ambient pressure on flow coefficient of water mist nozzle and droplets spatial distribution

based on investigating the characteristics of a swirl solid-cone and hollow-cone nozzle under different ambient pressure conditions.The results show that the smaller the ambient pressure is

the denser the droplets will be at the edge area of the spray cone

i.e.

few droplets tend to center area within the spray cone when ambient pressure reduced.However

there is no obvious effect of ambient pressure on flow coefficient of water mist nozzle.

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references

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细水雾灭火技术研究进展(英文) [J]. 廖光煊,黄鑫,丛北华,秦俊,刘江虹,王喜世. 中国科学技术大学学报 . 2006(01)

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