Enhancement mechanism of obstacles to gas cloud deflagration impulse

CONG Lixin; BI Mingshu; LI Shengjuan; YAO Min

您当前的位置：

首页 >

文章列表页 >

Enhancement mechanism of obstacles to gas cloud deflagration impulse

更新时间：2025-12-10

- Enhancement mechanism of obstacles to gas cloud deflagration impulse
- CIESC Journal Issue 6, Pages: 1554-1558(2007)
- 作者机构：
  
  大连理工大学化工学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 June 2007，
  
  Published：05 June 2007
- 稿件说明：
移动端阅览
CONG Lixin, BI Mingshu, LI Shengjuan, et al. Enhancement mechanism of obstacles to gas cloud deflagration impulse[J]. CIESC Journal, 2007, (6): 1554-1558.
DOI：

CONG Lixin, BI Mingshu, LI Shengjuan, et al. Enhancement mechanism of obstacles to gas cloud deflagration impulse[J]. CIESC Journal, 2007, (6): 1554-1558. DOI：

摘要

在面积为2000 m的实验基地;针对半球条栅型障碍物对半球形气云爆燃冲量场的影响进行了实验研究。可燃介质是13.3%(体积)的乙炔-空气混合气体;气云由0.02 mm的聚乙烯薄膜约束;利用数据采集系统记录爆燃压力-时间曲线;通过编制程序计算观测点的冲量。对正、负冲量与障碍物的半径、空隙率的关系以及爆燃场的冲量分布进行了分析。结果表明：障碍物的存在极大地提高了爆燃冲量;在该工况下的气云爆炸正负冲量场近似余弦分布;障碍物半径越大、空隙率越低;爆燃正负冲量越大。

Abstract

The deflagration experiments were carried out in the 2000 m experimental base to study the enhancement mechanism of deflagration impulse induced by obstacles.Acetylene-air cloud with a 13.3 %(vol) ratio was used as flammable material

which was restricted with 0.02 mm thick polythene film.Positive and negative impulse of deflagration was acquired by means of calculation with pressure recorded by a data-acquisition system whose dynamic responding time was less than 1 ms.Obstacles were composed of plastic binding strip.A series of experiments was completed to research the relations between impulse and obstacle radius

porous ratio and distance from ignition point.The experimental results showed that the deflagration impulse

either positive or negative

was enhanced by obstacles.The deflagration impulse field approximated to cosine curve distribution.The positive and negative impulses increased with increasing barrier radius and with reducing interspaced ratio.

关键词

Keywords

references

Views

257

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Methods of adaptive prediction and abnormal states traceability for sulphur content in flue gas desulfurization process

Effect of belt structure design on the vulcanization characteristics of all-steel radial tires

Thermo-gas-elastic coupling performance analysis of high-speed and high-temperature foil face seals

Heat transfer mechanisms, bottleneck identification and optimization in heat exchanger networks under variable operating conditions

Physics-informed spatio-temporal graph convolutional network for fermentation processes

Related Author

No data

Related Institution

No data

⁰