化工学报2019，Vol.70Issue(6)：2174-2181,8.DOI:10.11949/j.issn.0438-1157.20181167
一维二氧化碳管道全孔破裂模型
One-dimensional carbon dioxide pipe full hole fracture model
摘要
Abstract
In carbon capture and storage (CCS) technology, CO2 is transported from the capture point to the storage point primarily through high pressure piping. The potential for pipeline rupture and leakage, possibly resulting in catastrophic accidents, will presents a risk to human and animal populations. Therefore, to ensure pipeline safety, an essential risk assessment involving an accurate prediction of CO2 pipe flow following the pipeline fracture, especially obtaining the conditions at rupture, provides effective technical support for the implementation of large-scale CCS projects and contribute to pipeline safety. In the present paper, a one-dimensional (1D) Computational Fluid Dynamics (CFD) pipe flow model to predict pipeline fracture is developed. Precise Equation of States (EOSs), PR and GERG, is used to achieve more accurate source strength estimates. The effects of friction and heat transfer through the pipe wall are accounted for through momentum and energy source terms. The model is applicable for both single-phase and gas-liquid two-phase flow. In terms of two-phase simulation, liquid/vapour transition is implemented by introducing mass and energy source terms. The model predictions are validated by data from three independent depressurization experiments. Also, the effects of pipe wall roughness and pipe diameter on mass outflow rate are investigated. This research helps provide a reliable method for risk assessment related to CCS.关键词
气液两相流/相变/碳捕捉技术/计算流体力学/状态方程Key words
gas-liquid flow/phase transition/carbon capture and storage/computational fluid dynamics/equation of state分类
能源科技引用本文复制引用
刘斌,尤占平,邓佳佳..一维二氧化碳管道全孔破裂模型[J].化工学报,2019,70(6):2174-2181,8.基金项目
国家自然科学基金项目(21490581) （21490581）
中国石油化工股份有限公司资助项目(317008-6) （317008-6）
