Partitioned investigation of drag coefficient models of bubbles

被引：0
|
作者：
Zhou Y. [1 ]
Zhao C. [1 ]
Bo H. [1 ]
机构：
[1] Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷
关键词：
Bubble motion; Drag coefficient; Drag force model; Shape deformation;
D O I：
10.11949/0438-1157.20190604
中图分类号：
O35 [流体力学];
学科分类号：
080103 ; 080704 ;
摘要：
Drag force model which characterized by the drag coefficient, acting as a crucial interface force model, was generally applied into the momentum equation of continuous phase and dispersed phase in Euler-Euler approach and Euler-Lagrange approach. Previous drag coefficient models of bubbles are required to sufficiently estimated due to the different forms and limited applicability. Optimal model is selected considered the applicability of exist models and the influence of bubble shape deformation, which is partitioned and characterized by Reynolds number and Weber number according to the related parameters adopted in previous models. The drag coefficient predicted by the present model generally perform better than previous models by comparing with experimental data. A more physically and accurate predictions of bubble motions can be achieved by adopting the present model in numerical simulations to track the locations of various size of bubbles. © All Right Reserved.
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页码：108 / 116
页数：8
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