A Note on Modeling the Effects of Surfactants on Bubble-Induced Turbulence

被引：1
|
作者：
Ma, Tian [1 ]
Liao, Yixiang [1 ]
Hessenkemper, Hendrik [1 ]
Lucas, Dirk [1 ]
Bragg, Andrew D. [2 ]
机构：
[1] Helmholtz Zent Dresden Rossendorf, Inst Fluid Dynam, Bautzner Landstr 400, D-01328 Dresden, Germany
[2] Duke Univ, Dept Civil & Environm Engn, Durham, NC 27708 USA
来源：
CHEMICAL ENGINEERING & TECHNOLOGY | 2023年 / 46卷 / 09期
关键词：
Bubble-induced turbulence; Bubbly flows; Surfactant; Turbulence modeling; KINETIC-ENERGY; LIFT FORCE; FLOWS; SIMULATION; CLOSURE; MOTION;
D O I：
10.1002/ceat.202300152
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Recent experimental results reveal that with rising concentration of surfactants, the generated bubble-induced turbulence (BIT) increases as well, although the bubbles rise slower. Herein, it is shown that this phenomenon has not be considered so far in the standard Reynolds-averaged Navier-Stokes (RANS) modeling for BIT, using the Ansatz with source terms added to the transport equation of turbulent kinetic energy and dissipation, respectively. Some problematic issues related to the common concepts for closure of the liquid-phase turbulence kinetic energy equation are also discussed. Furthermore, this issue is demonstrated by simulating the experiments using two-fluid approach.
引用
收藏
页码：1817 / 1822
页数：6
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