Bubble formation from sub-millimeter orifices: Experimental analysis and modeling

被引：6

作者：

Mohseni, E. ^{[1
,2
]}

Reinecke, S. F. ^{[2
]}

Hampel, U. ^{[1
,2
]}

Chiamulera, M. Eduarda ^{[2
]}

机构：

[1] Inst Fluid Dynam, Helmholtz Zent Dresden Rossendorf, Bautzner Landstrasse 400, D-01328 Dresden, Germany

[2] Tech Univ Dresden, Chair Imaging Tech Energy & Proc Engn, D-01062 Dresden, Germany

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2022年 / 173卷

关键词：

Bubble formation; Sub-millimeter orifice; Gas reservoir; Bubble dynamics; Modeling; SUBMERGED ORIFICE; GROWTH; BEHAVIOR;

D O I：

10.1016/j.cep.2022.108809

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

We developed a theoretical model that estimates the bubble size from sub-millimeter orifices under variable gas flow conditions. The model is successfully tested for orifices with diameters in the range of 0.2 mm to 1 mm under both quasi-static and dynamic bubbling regimes. The model is able to predict the final bubble radius with an accuracy better than 20% compared with the experimental results. Moreover, we explicitly look into the influence of the gas reservoir volume V-c upstream of the orifice on the gas reservoir pressure P-c by simultaneously monitoring the events, i.e. changes in the state of bubble, upstream and downstream of orifices. We found that, variations in Pc reduce as V-c increases. Analysis of the dynamics of the dominating forces acting on a bubble show that, enlarging V-c mainly amplifies the gas momentum force and the liquid inertia force. Hence, the bubble detachment mechanism may no longer be only buoyancy driven.

引用

页数：11