油气田环境保护2026，Vol.36Issue(2)：21-28,34,9.DOI:10.3969/j.issn.1005-3158.2026.02.004
基于DEM-CFD的油水分离水力旋流器流场特性研究
Study on Flow Field Characteristics of Oil-water Separation Hydrocyclone Based on DEM-CFD
摘要
Abstract
As oilfield extraction progresses,the conditions of produced fluids become increasingly complex.Sand content,a common challenge,significantly impacts the migration of the oil phase during hydrocyclone separation.Consequently,studying hydrocyclones under sand-bearing conditions is crucial for surface wastewater treatment.To clarify flow field characteristics and separation performance variations,this study targets a dual-tangential inlet hydrocyclone.Using a DEM-CFD coupling method and single-factor experimental design,the media migration characteristics were analyzed under various inlet flow rates.Results show that as the inlet flow rate increases,the residence time of solid particles decreases,while their rotation cycles increase,leading to sand accumulation zones.With increased velocity,oil-phase particles alter their exit direction and accumulation points;at flow rates exceeding 5 m³/h,they can effectively escape through the overflow outlet.Flow field tests conducted via a high-speed camera system yielded results consistent with the simulations.关键词
油水分离/水力旋流器/含砂工况/DEM-CFD/颗粒轨迹Key words
oil-wate rseparation/hydrocyclone/sandbearing conditions/DEM-CFD/particle tracks分类
资源环境引用本文复制引用
李模刚,陈天晓,万建庆,郭倩茹..基于DEM-CFD的油水分离水力旋流器流场特性研究[J].油气田环境保护,2026,36(2):21-28,34,9.
