Turbulence induced by two-phase gas-liquid jets in aeration tanks

被引：0
|
作者：
Lima Neto, Iran Eduardo [1 ,2 ]
机构：
[1] Univ Fed Ceara, BR-60455970 Fortaleza, CE, Brazil
[2] Univ Sao Paulo, EESC, BR-05508 Sao Paulo, Brazil
来源：
ENGENHARIA SANITARIA E AMBIENTAL | 2010年 / 15卷 / 01期
关键词：
aeration; bubbles; multiphase flow; jets; turbulence; PIV; BUBBLY JETS; WATER; INJECTION;
D O I：
暂无
中图分类号：
TV21 [水资源调查与水利规划];
学科分类号：
081501 ;
摘要：
Two-phase gas-liquid jets are widely used in the sanitary and environmental engineering field for artificial aeration and turbulent mixing. The present work investigates the turbulence generated by these jets in a water tank, using particle image velocimetry. The experimental conditions included two-phase jets with gas volume fractions of up to 70% and Reynolds numbers ranging from 10,600 to 17,700. The results indicated that the gas volume fraction affects significantly the turbulent properties of the liquid phase, while the Reynolds number presents a secondary effect. Dimensionless correlations were then obtained to express the turbulent kinetic energy and dissipation rate as a function of these two parameters. Finally, possible applications of the results obtained in this work are presented.
引用
收藏
页码：75 / 82
页数：8
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