Analyzing of mixing performance determination factors for the structure of radial multiple jets-in-crossflow

doi:10.1016/j.cjche.2019.02.013

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (11): 2626-2634.DOI: 10.1016/j.cjche.2019.02.013

• Fluid Dynamics and Transport Phenomena • Previous Articles Next Articles

Analyzing of mixing performance determination factors for the structure of radial multiple jets-in-crossflow

Meifang Zhou¹, Hao Jiang¹, Yanjie Hu¹, Zhimin Lu², Haibo Jiang¹, Chunzhong Li¹

1 Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China;
2 School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China

Received:2018-12-04 Revised:2019-01-14 Online:2020-01-19 Published:2019-11-28
Contact: Haibo Jiang, Chunzhong Li
Supported by:
Supported by the National Natural Science Foundation of China, China (21522602, 21776092, 91534202, 91534122, 51673063, 51672082), Basic Research Program of Shanghai, China (15JC1401300, 17JC1402300), Social Development Program of Shanghai, China (17DZ1200900), Innovation Program of Shanghai Municipal Education Commission, China, and Fundamental Research Funds for the Central Universities, China (222201718002).

Analyzing of mixing performance determination factors for the structure of radial multiple jets-in-crossflow

Meifang Zhou¹, Hao Jiang¹, Yanjie Hu¹, Zhimin Lu², Haibo Jiang¹, Chunzhong Li¹

1 Key Laboratory for Ultrafine Materials of the Ministry of Education, School of Materials Science and Engineering, East China University of Science & Technology, Shanghai 200237, China;
2 School of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China

通讯作者: Haibo Jiang, Chunzhong Li
基金资助:
Supported by the National Natural Science Foundation of China, China (21522602, 21776092, 91534202, 91534122, 51673063, 51672082), Basic Research Program of Shanghai, China (15JC1401300, 17JC1402300), Social Development Program of Shanghai, China (17DZ1200900), Innovation Program of Shanghai Municipal Education Commission, China, and Fundamental Research Funds for the Central Universities, China (222201718002).

Abstract

Abstract: The radial multiple jets-in-crossflow mixing structure (RMJCMS) is extensively used in industrial manufacture. In this research, the effects of thickness of injection ring on mixing performance and factors influencing the mixing performance of RMJCMS were discussed based on the results of computational fluid dynamics. The simulation results showed that the dimensionless mixing distance, with the increase of the thickness of injection ring, drops from 1.1 to 0.18 first and then increases to 0.27 while the uniformity of flux monotonously improves, manifesting that the consistency of flux is not the single element determining the mixing performance. Analyzing the simulation results, a conclusion was drawn that the consistency of flux, penetration mode and interaction among injection flows which can be altered by adjusting the thickness of injection ring, determine the mixing performance of RMJCMS jointly. That is to say, in RMJCMS an injection ring with a suitable thickness can realize the function of injection and rectification simultaneously, which not only improves the mixing performance but also reduces the complexity of RMJCMS as well.

Key words: Thickness of injection ring, Multiple jets mixing structure, Computational fluid dynamics, Penetration mode, Jet interaction

摘要： The radial multiple jets-in-crossflow mixing structure (RMJCMS) is extensively used in industrial manufacture. In this research, the effects of thickness of injection ring on mixing performance and factors influencing the mixing performance of RMJCMS were discussed based on the results of computational fluid dynamics. The simulation results showed that the dimensionless mixing distance, with the increase of the thickness of injection ring, drops from 1.1 to 0.18 first and then increases to 0.27 while the uniformity of flux monotonously improves, manifesting that the consistency of flux is not the single element determining the mixing performance. Analyzing the simulation results, a conclusion was drawn that the consistency of flux, penetration mode and interaction among injection flows which can be altered by adjusting the thickness of injection ring, determine the mixing performance of RMJCMS jointly. That is to say, in RMJCMS an injection ring with a suitable thickness can realize the function of injection and rectification simultaneously, which not only improves the mixing performance but also reduces the complexity of RMJCMS as well.

关键词: Thickness of injection ring, Multiple jets mixing structure, Computational fluid dynamics, Penetration mode, Jet interaction

Meifang Zhou, Hao Jiang, Yanjie Hu, Zhimin Lu, Haibo Jiang, Chunzhong Li. Analyzing of mixing performance determination factors for the structure of radial multiple jets-in-crossflow[J]. Chinese Journal of Chemical Engineering, 2019, 27(11): 2626-2634.

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Analyzing of mixing performance determination factors for the structure of radial multiple jets-in-crossflow

Analyzing of mixing performance determination factors for the structure of radial multiple jets-in-crossflow

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