Experimental study of the interaction of water mist with under-expanded hydrogen jet flames

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Aug.2023, Vol.46 No.8: 1115-1121

DOI: 10.3969/j.issn.1003-5060.2023.08.017

Authors

ZHANG Zhihui $ ^{1} $, WANG Changjian $ ^{1} $, LIU Yi $ ^{2} $, LI Bing $ ^{3} $, ZHOU Penggang $ ^{3} $

(1. School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei 230009, China; 2. School of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China; 3. Yankuang Guohong Chemical Co., Ltd., Zoucheng 273512, China)

Abstract and Keywords

Abstract: A series of experiments were performed on the interaction of water mist with horizontal under-expanded hydrogen jet flames. The effects of various water mist pressures and vertical release positions on flame pattern, length, temperature, and radiant heat flux were studied. The results show that water mist causes the flame to be tilted, and the tilt angle of the flame increases with increasing water mist pressure. When the water mist pressure is small, the flame expands, and the horizontal length of the flame increases. As the water mist pressure increases, the horizontal length of the flame gradually decreases. It is also found that an inappropriate application of water mist may lead to the enhancement of flame temperature and radiation, which will bring potential secondary hazards and endanger people's lives and property.

Keywords: hydrogen jet flame; water mist; radiation; temperature; flame length

作者信息

章智慧 $ ^{1} $，王昌建 $ ^{1} $，刘义 $ ^{2} $，李冰 $ ^{3} $，周鹏刚 $ ^{3} $

（1. 合肥工业大学土木与水利工程学院，安徽合肥 230009；2. 中国石油大学（华东）化学化工学院，山东青岛 266580；3. 兖矿国宏化工有限责任公司，山东邹城 273512）

摘要和关键词

摘要: 文章对细水雾与欠膨胀氢气喷射火的相互作用进行了一系列实验研究,重点研究在不同的细水雾压力和竖直释放高度下,喷射火的火焰形态、火焰长度、温度场以及辐射场的变化情况。结果表明:在细水雾的作用下,火焰将发生偏折,并且火焰折角随细水雾压力的增大而增大;细水雾压力较小时,火焰出现膨胀现象,火焰水平长度有所增大;随着细水雾压力的增大,火焰长度逐渐减小;不合适的施加细水雾可能会导致火焰温度场和辐射场增强,进而带来潜在的二次危害危及人们的生命财产安全。

关键词: 氢气喷射火；细水雾；辐射；温度；火焰长度

Funding

基金项目：安徽省重点研发计划资助项目（S202104b11020035）；兖矿集团2019年技术研发支持计划资助项目（YKZB2020-173）

合肥工业大学学报(自然科学版)

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