Study on Liquid Turbulence Modulation by Microbubbles in Different Turbulence Layers

被引：1

作者：

Pang, Mingjun ^{[1
]}

Wei, Jinjia ^{[2
]}

Yu, Bo ^{[3
]}

机构：

[1] Changzhou Univ, Sch Mech Engn, Changzhou 213016, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China

[3] China Univ Petr, Beijing Key Lab Urban Oil & Gas Distribut Technol, Beijing 102249, Peoples R China

来源：

ADVANCES IN MECHANICAL ENGINEERING | 2014年

关键词：

PARTICLE TRACKING VELOCIMETRY; DIRECT NUMERICAL-SIMULATION; BUBBLY CHANNEL FLOW; FLUID; LADEN;

D O I：

10.1155/2014/647467

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Bubbly flows exist extensively in industrial processes. To enhance efficiencies of industrial processes, it is very necessary and important to understand detailedly mechanisms of liquid turbulence modulation by bubbles. To understand mechanisms of the liquid turbulence modulation by microbubbles, an Euler-Lagrange two-way model was used to investigate and analyze deeply the liquid turbulence modulation by microbubbles in the subviscous, buffer, and outer layers, respectively. The present results show that the liquid turbulence modulation by microbubbles is related to microbubble locations; the liquid turbulence is intensified when microbubbles are in the outer layers, whereas the liquid turbulence is suppressed when microbubbles are in the subviscous and buffer layer; and the drag reduction occurs only when microbubbles are in the buffer layer.

引用

页数：10

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