基于DEM-CFD的油水分离水力旋流器流场特性研究OA

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.