流体机械2025，Vol.53Issue(4)：93-101,109,10.DOI:10.3969/j.issn.1005-0329.2025.04.013
轻烃管道泄漏扩散规律研究
Study on leakage diffusion law of light hydrocarbon pipeline
摘要
Abstract
To address the leakage and diffusion issues in light hydrocarbon pipelines,this study establishes a conceptual model of the leakage diffusion process,dividing it into four stages and conducting theoretical analysis with formula derivation.A numerical model of atmosphere‑pipeline‑soil leakage diffusion was developed using CFD to analyze the entire leakage process,focusing on the diffusion range variations of different hydrocarbon components and comparing multi‑component versus single‑component leakage characteristics.Simulation results show that light hydrocarbon leakage occurs in three phases:rapid diffusion in the initial phase,stabilization during the middle phase,and full stabilization after 800 s in the final phase.C3 exhibits the largest gaseous diffusion range,while C5 shows the largest liquid diffusion range.Single‑component C2~C4 demonstrate broader diffusion ranges,whereas multi‑component C5~C8 exhibit larger diffusion extents.In multi‑component leakage,sequential vaporization and diffusion suppress the diffusion of heavy gaseous components,resulting in smaller ranges compared to single components,while liquid components expand their diffusion due to gas‑phase entrainment.This study provides theoretical foundations and technical support for emergency management of light hydrocarbon pipeline leaks.关键词
轻烃管道/泄漏扩散/数值模拟Key words
light hydrocarbon pipeline/leakage and diffusion/numerical simulation分类
能源科技引用本文复制引用
陈利琼,熊珍宝,赵翔,张开..轻烃管道泄漏扩散规律研究[J].流体机械,2025,53(4):93-101,109,10.基金项目
国家自然科学基金合作交流项目(51210105012) （51210105012）
