摘要
[目的]旨在探究水雾环境下的密闭舱室内爆准静态压力特性。[方法]首先,基于绝热的理想气体舱室内爆准静态压力理论模型,新增2个假设,建立水雾环境下的密闭舱室内爆准静态压力理论模型;然后,以药量为自变量,开展有/无水雾的密闭舱室内爆对照试验,测量准静态压力以验证水雾对准静态压力的削弱效应,并得到准静态压力经验公式。[结果]理论模型和试验数据分析表明:随着药量-体积比的增大,水雾减弱了内爆准静态压力的增强能力,增长率逐渐降低;引入后燃烧修正项的理论公式与经验公式均可用于预估舱内准静态压力峰值。[结论]试验结果验证了水雾对准静态压力的削弱效应,基于理论模型和相关试验数据拟合得到了水雾环境下内爆准静态压力峰值的经验公式。
[Objective]This study focuses on the quasi-static pressure characteristics of a confined cabin in a water mist environment.[Methods]First,on the basis of the theoretical model of quasi-static pressure in a confined cabin in adiabatic ideal gas,two new assumptions are added to establish a theoretical model of quasi-static pressure in a confined cabin in a water mist environment.Internal explosion experiments in a confined cabin with and without water mist are then performed with the charge as an independent variable,and the quasi-static pressure is measured and used to verify the mitigation effect of water mist on quasi-static pressure and obtain its empirical formula.[Results]Combined with the theoretical model and experimental data ana-lysis,it is concluded that the ability of water mist to reduce quasi-static pressure increases with the increase in charge-volume ratio,but the increase rate gradually decreases.Both the theoretical formulas of the afterburn-ing correction term and empirical formulas can be used to estimate the quasi-static pressure peak in the cabin.[Conclusions]The experimental results verify the mitigation effect of water mist on quasi-static pres-sure.The experimental data of this paper and others shows good agreement with the empirical formula of the quasi-static pressure peak of an internal explosion in a water mist environment,and can be used to estimate the quasi-static pressure peak.
作者
习修义
李俊
张娅
王志平
陈威
李营
李晓彬
XI Xiuyi;LI Jun;ZHANG Ya;WANG Zhiping;CHEN Wei;LI Ying;LI Xiaobin(School of Marine and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Institute of Advanced Structure Technology,Beijing Institute of Technology,Beijing 100081,China)
出处
《中国舰船研究》
CSCD
北大核心
2024年第3期174-181,共8页
Chinese Journal of Ship Research
基金
国家自然科学基金资助项目(51979213)。
关键词
密闭舱室
内爆
水雾
准静态压力
confined cabin
internal explosion
water mist
quasi-static pressure
