典型文献
Numerical study on hydrodynamic characteristics of spherical bubble contaminated by surfactants under higher Reynolds numbers
文献摘要：
It is of significance to investigate deeply the hydrodynamic features of the bubble contaminated by impu-rities in view of the fact that the industrial liquid is difficult to keep absolutely pure.On the basis of the finite volume method,the bubble interface contaminated by the surfactant(1-pentanol)is achieved through solving the concentration transport equations in liquid and along the bubble interface,and solv-ing the absorption and desorption equation at the bubble interface.And the three-dimensional momen-tum equation is solved at the same time.It is investigated in detail on the influence of interfacial contamination degrees(described with the cap angle θ)on hydrodynamic characteristics of the spherical bubble when the bubble Reynolds number(Re)is larger than 200.The θ is realized by changing the sur-factant concentration(C0)in liquid.The present results show that the hydrodynamic characteristics,such as interfacial concentration,interfacial shear stress,interfacial velocity and wake flow,are related to both Re and C0 for the contaminated bubble.When C0 is relatively low in liquid(i.e.,the contamination degree of the bubble interface is relatively slight),the hydrodynamic characteristics of the bubble can still keep the 2D features even if Re＞200.The decrease of θ or the increase of Re can promote the appearance of the unsteady wake flow.For the present investigation,when Re＞200 and θ≤60°,the hydrodynamic charac-teristics of the bubble show the 3D phenomena,which indicates that axisymmetric model is no longer valid.
文献关键词：
中图分类号：
作者姓名：
Tao Sun;Mingjun Pang;Yang Fei
作者机构：
School of Mechanical Engineering and Rail Transit,Changzhou University,Changzhou 213164,China
文献出处：
引用格式：
[1]Tao Sun;Mingjun Pang;Yang Fei-.Numerical study on hydrodynamic characteristics of spherical bubble contaminated by surfactants under higher Reynolds numbers)[J].中国化学工程学报（英文版）,2022(05):268-283
A类：
impu,rities,pentanol,momen,factant
B类：
Numerical,study,hydrodynamic,characteristics,spherical,bubble,contaminated,by,surfactants,under,higher,Reynolds,numbers,It,significance,deeply,features,view,that,industrial,liquid,difficult,keep,absolutely,pure,On,basis,finite,volume,method,interface,achieved,through,solving,concentration,transport,equations,along,absorption,desorption,And,three,dimensional,tum,solved,same,investigated,detail,influence,interfacial,contamination,degrees,described,cap,angle,when,larger,than,realized,changing,C0,present,results,show,such,shear,stress,velocity,wake,flow,are,related,both,When,relatively,slight,still,2D,even,decrease,increase,promote,appearance,unsteady,For,investigation,phenomena,which,indicates,axisymmetric,model,longer,valid
AB值：
0.415597
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