Numerical and experimental study of dynamic gas–liquid separator with various viscosities  

作　　者：Zhi Qiu Danyang Du Mahmoud A.El-Emam Ramesh K.Agarwal Ling Zhou 

机构地区：[1]National Research Center of Pumps,Jiangsu University,Zhenjiang 212013,China [2]CNOOC EnerTech Drilling and Production Co.Ltd.,Tianjin 300450,China [3]Department of Agricultural and Biosystems Engineering,Alexandria University,Shatby 21526,Egypt [4]CFD Lab,Washington University in St.Louis,St.Louis,Missouri 63130,USA

出　　处：《International Journal of Fluid Engineering》2024年第4期89-109,共21页国际流体工程(英文)

基　　金：supported by the National Natural Science Foundation of China(Grant No.52079058);the Natural Science Foundation of Jiangsu Province(Grant No.BK20230011);Special Funds for Taishan Industrial Experts Programme(Grant No.tscx2023120887);the Jiangsu Excellent Postdoctoral Funding Program(Grant No.2022ZB641)

摘　　要：The gas–liquid separation process is important in various industries,such as electric power,aerospace,and petroleum.This study introduces an innovative,dynamic gas–liquid separator(DGLS)in which a cyclonic flow pattern is induced by blade rotation.This cyclonic flow enhances the efficiency of gas and liquid phase separation while also imparting energy to facilitate the transport of the separated fluid.Numerical simulations are used to analyze the internal flow dynamics,power requirements,and separation efficiency of this DGLS.A comparison with experimental results is conducted to validate the reliability of the numerical model.The effects of liquid-phase viscosity on the internal energy consumption and separation performance of the DGLS are explored at various flow rates.The simulation results indicate that for a given viscosity,the degassing rate of the separator decreases while the liquid removal rate increases as the inlet flow rate rises.Furthermore,it is observed that higher viscosity leads to poorer separation performance,with a decrease in turbulent kinetic energy near the rotating axis and an increase in turbulence intensity near the wall.At lower flow rates,the effectiveness of liquid-phase outlet pressurization improves with increasing viscosity.However,at higher flow rates,increasing viscosity leads to a substantial decline in energy performance and a reduction in liquid-phase outlet pressurization.The increment in turbulent kinetic energy is greater than the square of the mean velocity,indicating a positive correlation between turbulence intensity and turbulent kinetic energy.These findings not only provide a theoretical basis for the prediction of flow losses within a DGLS and the efficient design of these separators,but also provide guidance for industrial applications involving high-viscosity fluids.

关 键 词：VISCOSITY SEPARATION SEPARATOR 

分 类 号：TQ051.8[化学工程]