Fluid Flow and Inclusion Behavior Around Spherical-Cap Bubbles

被引：17

作者：

Duan, Haojian ^{[1
]}

Scheller, Piotr Roman ^{[1
]}

Ren, Ying ^{[1
]}

Zhang, Lifeng ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

来源：

JOM | 2019年 / 71卷 / 01期

基金：

美国国家科学基金会;

关键词：

PARTICLE COLLISION EFFICIENCY; NUMERICAL SIMULATIONS; MIXING PHENOMENA; FLOTATION; REMOVAL; STEEL; LADLES;

D O I：

10.1007/s11837-018-3193-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fluid flow and inclusion behavior around a spherical-cap bubble in molten steel is investigated by the computational model in a two-dimensional axisymmetric domain. Discrete phase model is employed to describe the trajectory of inclusion through the flow field around the bubble, and a stochastic tracking model is adopted to account for the dispersion of inclusions due to turbulence. Increasing the level of turbulence kinetic energy causes the effective attachment radius and the overall attachment probability to increase. Larger inclusions have a larger attachment probability. The wake region grows larger as the turbulence becomes weaker. The entrapment of inclusions by the bubble wake is also considered and the entrapment probability is calculated.

引用

页码：69 / 77

页数：9

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