当代化工
噹代化工
당대화공
CONTEMPORARY CHEMICAL INDUSTRY
2015年
8期
1974-1976
,共3页
数值模拟%泄漏%埋地管道%甲烷
數值模擬%洩漏%埋地管道%甲烷
수치모의%설루%매지관도%갑완
Numerical simulation%Leakage%Buried pipeline%Methane
针对埋地天然气管道泄漏扩散问题,采用有限体积法,建立埋地天然气管道泄漏扩散模型,在1~7级风场条件下,考虑土壤和大气稳定度对泄漏气体扩散的影响,从安全的角度出发,分析埋地天然气管道泄漏持续扩散情况,得出甲烷爆炸浓度云团在不同风场条件下的扩散规律。为埋地天然气管道的风险评估、安全运行和管理,事故分析,工程设计以及泄漏后应急措施等提供了参考理论。
針對埋地天然氣管道洩漏擴散問題,採用有限體積法,建立埋地天然氣管道洩漏擴散模型,在1~7級風場條件下,攷慮土壤和大氣穩定度對洩漏氣體擴散的影響,從安全的角度齣髮,分析埋地天然氣管道洩漏持續擴散情況,得齣甲烷爆炸濃度雲糰在不同風場條件下的擴散規律。為埋地天然氣管道的風險評估、安全運行和管理,事故分析,工程設計以及洩漏後應急措施等提供瞭參攷理論。
침대매지천연기관도설루확산문제,채용유한체적법,건립매지천연기관도설루확산모형,재1~7급풍장조건하,고필토양화대기은정도대설루기체확산적영향,종안전적각도출발,분석매지천연기관도설루지속확산정황,득출갑완폭작농도운단재불동풍장조건하적확산규률。위매지천연기관도적풍험평고、안전운행화관리,사고분석,공정설계이급설루후응급조시등제공료삼고이론。
Aiming at the problem of natural gas leakage and diffusion of buried pipelines, the finite volume method was adopted to establish the numerical model of natural gas leakage and diffusion of buried pipelines, under 1~7 grade wind field, considering effect of the soil and atmospheric stability on the gas leakage and diffusion, from the viewpoint of safety, leakage and diffusion conditions of natural gas of buried pipelines were analyzed, the diffusion rule of the explosive concentration cloud of methane was obtained, which could provide theory reference for risk assessment, safe operation and management of buried natural gas pipelines.