石油化工2025，Vol.54Issue(12)：1745-1751,7.DOI:10.3969/j.issn.1000-8144.2025.12.009
竖直弯管零液流量气提流动数值模拟研究
Numerical simulation of gas-liquid flow with zero liquid velocity in a vertical curved pipe
摘要
Abstract
In order to predict and control the pressure inside the horizontal well of marine hydrate depressurization production,Ansys Fluent software was used to simulate the gas-liquid flow with zero liquid velocity in a vertical curved pipe,and the flow pattern and pressure at low gas injection velocity were studied.The simulation results show that the flow pattern is composed of three parts,which are the gas-liquid stratification in the horizontal segment,intermittent generation of bubbles in the curved segment,and slug flow in the vertical segment.The unsteady flow in the curved segment leads to the multi-stage changes in inlet and outlet pressure,with pressure fluctuations twice that of the vertical pipe.With the increase of gas injection velocity,the thickness of the continuous gas phase in the horizontal segment increases,the frequency of bubble generation in the curved segment increases,the distance between Taylor bubbles in the vertical segment decreases,the number of bubbles entrained in the liquid slug increases,and the change rate and degree of the inlet and outlet pressure increase.关键词
竖直弯管/零液流动/流型/气液两相流Key words
vertical curved pipe/zero net-liquid flow/flow pattern/gas-liquid two-phase flow分类
化学化工引用本文复制引用
张振楠,薛德水,罗浩天,杨欢..竖直弯管零液流量气提流动数值模拟研究[J].石油化工,2025,54(12):1745-1751,7.基金项目
国家自然科学基金项目(U2106225,52004324) （U2106225,52004324）
中央高校基本科研业务费专项资金资助项目(2024QN11038). （2024QN11038）
