安全、健康和环境2025，Vol.25Issue(8)：13-20,8.DOI:10.3969/j.issn.1672-7932.2025.08.002
有毒易燃气体大尺度泄漏扩散模拟及试验研究综述
A Review of Simulation and Experimental Research on Large-scale Leakage and Dispersion of Toxic and Flammable Gases
摘要
Abstract
This review comprehensively examined research progress in theoretical models and experimental methods for toxic and flammable gas leakage and dispersion.It analyzed under-expanded jet structure,computa-tional models,dispersion models,numerical simulation methods,and diffusion experiments.Research indicated that the leakage dispersion process involves two key stages:under-expanded jet formation at the leakage outlet and far-field atmospheric dispersion.Various experimental methods and computational models have been devel-oped in each stage.Particle image velocimetry was a crucial technique for studying jet structure.Based on ex-perimental data and momentum conservation equations,various high-precision equivalent jet models such as Birch′s method,Ewan′s method,Schefer′s method,and Harstad′s method have been established.For large-scale dispersion,the Gaussian model and Computational Fluid Dynamics(CFD)were the most widely applied methods,among which Phast and FLACS were commonly used simulation tools.However,current research on jet formation and dispersion of mixed gases remains insufficient,lacking adequate experimental verification,and the theoretical system has not yet been perfected.In terms of test methods,compared with field tests,wind tun-nel experiments have demonstrated significant potential as a preferred method for studying large-scale gas disper-sion.Nevertheless,developing experimental similarity models and dimensionless parameters for industrial gas dispersion lacked robust theoretical underpinning.Future research should focus on large-scale jet experiments,the development of domestic numerical simulation software,large-scale wind tunnel dispersion experiments,and mixed gas leakage dispersion modeling.关键词
有毒易燃气体/大尺度泄漏/气体射流/扩散模型/风洞实验/数值模拟/气体泄漏Key words
toxic and flammable gases/large-scale leakage/gas jet/dispersion model/wind tunnel exper-iments/numerical simulation/gas leakage分类
化学化工引用本文复制引用
辛保泉,党文义..有毒易燃气体大尺度泄漏扩散模拟及试验研究综述[J].安全、健康和环境,2025,25(8):13-20,8.基金项目
中国石化科技部项目(323060),二氧化碳输送过程安全风险评估与防控技术研究. （323060）
