Yan Zhang, Xinyu Li, Gai Zhang, Zhiqiang Li, Jianxin Xu, Hua Wang
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引用次数: 0
Abstract
The motion of bubbles in stirred reactors exerts a significant influence on heat and mass transfer, as well as reaction rates within the reactor. This study examines the chaotic mixing characteristics and dynamic behavior of bubbles in a stirred reactor by introducing pulsed air flow. Deep learning is employed to track and analyze bubble motion, thereby revealing the mechanistic insights of bubble dynamics in stirred reactors. Additionally, mechanical stirring chaos characteristics are quantified using 0-1 tests, coupled with a comprehensive evaluation of mixing systems based on mixing times. The results demonstrate that pulsed air flow induces nonlinear bubble motion, generating complex mixing patterns and flow structures within the reactor. Quantitative analysis of bubble trajectories and distributions elucidates the impact mechanisms of pulsed air flow on mixing efficiency. Further research reveals that optimizing parameters of pulsed air flow can enhance bubble motion, improve mixing efficiency, accelerate reaction rates, and enhance reactor performance. Under optimal conditions, mixing times are reduced by 3.26 times compared to conventional mixing systems. This study offers novel insights and methodologies for the design and optimization of mixing reactors.
期刊介绍：
The Korean Journal of Chemical Engineering provides a global forum for the dissemination of research in chemical engineering. The Journal publishes significant research results obtained in the Asia-Pacific region, and simultaneously introduces recent technical progress made in other areas of the world to this region. Submitted research papers must be of potential industrial significance and specifically concerned with chemical engineering. The editors will give preference to papers having a clearly stated practical scope and applicability in the areas of chemical engineering, and to those where new theoretical concepts are supported by new experimental details. The Journal also regularly publishes featured reviews on emerging and industrially important subjects of chemical engineering as well as selected papers presented at international conferences on the subjects.
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