Numerical simulation study of the effect of nonlinear side blowing on the flow of gas-liquid two-phase flow

XinTao Su; Shibo Wang; Hua Wang; Jianxin Xu; Qingtai Xiao

doi:10.1515/ijcre-2023-0198

Article

Numerical simulation study of the effect of nonlinear side blowing on the flow of gas-liquid two-phase flow

XinTao Su , Shibo Wang , Hua Wang , Jianxin Xu and Qingtai Xiao

Published/Copyright: February 21, 2024

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From the journal International Journal of Chemical Reactor Engineering Volume 22 Issue 4

Abstract

The hydrodynamic and stirring characteristics of gas-slag-copper matte three-phase in side-blowing melt pool melting were numerically simulated using a combination of the volume of fluid (VOF) model in computational fluid dynamics and the realizable k-ε turbulence model. The study obtained macroscopic flow and gas-liquid two-phase distribution information of the flow field in the melting process. It also examined the effects of isokinetic blowing and nonlinear blowing on the fluid velocity, penetration depth, gas content, and turbulent eddy volume of the flow field, and compared the results. The results indicate that, for the same total gas volume, constant velocity blowing (CVS) inadequately agitates the molten pool, resulting in a large stirring dead zone within the flow field. In contrast, nonlinear blowing enhances the fluid velocity overall. Specifically, sinusoidal variable speed blowing (SWS) and rectangular variable speed blowing (RWS) reduce the stirring dead zone area by 79  and 73.5 %, respectively. This is attributed to the increase in maximum penetration depth and slag phase gas content, as well as the decrease in gas escape during nonlinear blowing. The vortex volume over the total calculated time for the three conditions is enhanced by 6.7  and 1.1 % for SWS and RWS, respectively. Additionally, the turbulent kinetic energy of the fluids is increased by 18.7  and 17 %, respectively.

Keywords: nonlinear blowing; side-blowing submerged lance; multiphase flow; numerical simulation

Corresponding author: Shibo Wang, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China, E-mail: ph.d.wangshibo@foxmail.com

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: 52166004

Research ethics: The research ethics and research integrity has been followed by all the authors.
Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission. Xintao Su: conceptualization, methodology, investigation, data collection and analysis, writing original draft and revisions, proof reading and editing of final version. Shibo Wang: intellectual content, interpretation of data, validation, supervision. Hua Wang: formal analysis, review and editing.
Competing interests: There are no conflicts of interest.
Research funding: National Natural Science Foundation of China (No. 52166004).
Data availability: Data will be made available on request.

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Received: 2023-10-25

Accepted: 2024-01-16

Published Online: 2024-02-21

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Articles in the same Issue

https://doi.org/10.1515/ijcre-2023-0198

Keywords for this article

nonlinear blowing; side-blowing submerged lance; multiphase flow; numerical simulation