化工学报2016，Vol.67Issue(4)：1269-1276,8.DOI:10.11949/j.issn.0438-1157.20151032
水力喷射空气旋流器中射流雾化过程模拟及其机理
Numerical simulation and mechanism of jet atomization in water-sparged aerocyclone
摘要
Abstract
Water-sparged aerocyclone (WSA) is a new type of high efficient gas-liquid mass transfer reaction equipment. The gas phase pressure drop characteristics, liquid phase reflux ratio and jet atomization process in the WSA were better simulated using the Reynolds stress model (RSM) and the multiphase flow model of volume of fluid (VOF). The mechanism of jet atomization process in the WSA was also discussed in detail. Both simulation and experiment results illustrated that the gas phase pressure drop of WSA will go through a low pressure drop zone, a pressure drop jump zone, a pressure drop transitional zone and a high pressure drop zone with the increase of gas inlet velocity. The determination method of a turning point between two adjacent pressure drop areas was given. The water jet presents steady jet, deformation and bag-like breakup, bag-like breakup and shear atomization, shear atomization and liquid drop centrifugation, respectively, in the above-mentioned pressure drop areas. The water jet in the WSA was fully atomized and the mass transfer interface between gas and liquid phases was maximized when the gas phase inlet velocity reached the turning point between the pressure drop transitional area and the high pressure drop area. The results could be used as a theoretic basis for establishing a adjusting method for jet atomization and flow field in the WSA.关键词
水力喷射空气旋流器/射流雾化/数值模拟/压降特性Key words
water-sparged aerocyclone/jet atomization/numerical simulation/pressure drop characteristics分类
化学化工引用本文复制引用
邱发成,徐飞,全学军,罗丹,代明星,吴京平..水力喷射空气旋流器中射流雾化过程模拟及其机理[J].化工学报,2016,67(4):1269-1276,8.基金项目
国家自然科学基金项目(21176273)。@@@@supported by the National Natural Science Foundation of China(21176273) （21176273）
