化工学报2025，Vol.76Issue(z1)：123-132,10.DOI:10.11949/0438-1157.20241404
热对流影响下液滴蒸发特性模型与实验研究
Modeling and experimental study on the evaporation characteristics of liquid droplets subject to thermal convection
摘要
Abstract
Forest fires have immense destructive power,and aerial firefighting is the safest and most efficient technique for combating them.Under the coupling effects of high-altitude wind fields and ground fire conditions,the fire extinguishing medium sprayed at high speed rapidly expands,fragments,atomizes,and evaporates,causing a loss of firefighting effectiveness.To understand the evaporation characteristics of the extinguishing medium,a model of droplet evaporation under thermal convection conditions is established in this study,including the dynamic equations of the heat transfer and mass transfer,and a visualized experimental setup for measuring droplet evaporation characteristics is carried out.The evaporation processes of water and gel fire extinguishing agents are observed,and the rates of change in droplet diameters are measured.The model is validated based on the experimental data.The experimental validation shows that the proposed model accurately reflects the evaporation characteristics of water and fire extinguishing agents,and the model's prediction results agree well with the experimental data,with the deviations of droplet radius being less than±0.2 mm.关键词
热对流/液滴/蒸发/实验验证Key words
thermal convection/droplet/evaporation/experimental validation分类
能源科技引用本文复制引用
孙浩然,吴成云,王艳蒙,孙静楠,胡仞与,段钟弟..热对流影响下液滴蒸发特性模型与实验研究[J].化工学报,2025,76(z1):123-132,10.基金项目
上海市自然科学基金项目(23ZR1478900) （23ZR1478900）
上海市青年科技英才扬帆计划项目(22YF1459700) （22YF1459700）
