化工学报2026，Vol.77Issue(7)：3786-3796,11.DOI:10.11949/0438-1157.20251370
液液两相湍流中的统计特性分析
Statistical characteristic analysis in turbulent emulsions
摘要
Abstract
Turbulent emulsions refer to dispersion systems formed by two immiscible liquid components(e.g.,oil and water)within turbulent flows.These systems are widely encountered in nature and have significant applications in the petroleum and chemical industries.Turbulent flows contain many strongly coupled degrees of freedom,and there are multiscale coupling effects between the two-phase interface and turbulent flow,making turbulent emulsions more complex compared to single-phase turbulence.In this paper,three-dimensional direct numerical simulations of turbulent emulsions within the Taylor-Couette system are carried out using the interface-resolved volume-of-fluid method to investigate the effect of dispersed droplets with different fluid properties on the turbulent characteristics.The study reveals that when both phases have the same density and viscosity,dispersed droplets enhance the angular momentum transport capacity of turbulent fluctuations and modulate the distribution of these fluctuations.Specifically,this manifests as enhanced turbulent fluctuations near the inner and outer cylinders while weakening those far from them.A reduction in dispersed-phase density and a further reduction in dispersed-phase viscosity both tend to weaken the angular momentum transport capacity and intensity of turbulent fluctuations.For the Taylor vortex,the presence of dispersed droplets consistently tends to weaken both its intensity and angular momentum transport capability.The related findings contribute to a deeper understanding of the effect of dispersed phase in turbulent emulsions.关键词
两相流/湍流/数值模拟/流体体积法/湍流调制Key words
two-phase flow/turbulent flow/numerical simulation/volume-of-fluid method/turbulence modulation分类
化学化工引用本文复制引用
苏敬宏,张亿宝,孙超,王军武..液液两相湍流中的统计特性分析[J].化工学报,2026,77(7):3786-3796,11.基金项目
国家自然科学基金项目(12402299,12588201,12402298) （12402299,12588201,12402298）
中国石油大学(北京)科研基金项目(2462025YJRC012) （北京）
