Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation

doi:10.1016/j.cjche.2018.04.011

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (1): 54-62.DOI: 10.1016/j.cjche.2018.04.011

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation

Nouman Ahmad^1,2, Yujie Tian^1,2, Bona Lu^1,2, Kun Hong³, Haifeng Wang^1,2, Wei Wang^1,2

1 State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry, Huaiyin Institute of Technology, Huai'an 223003, China

收稿日期:2018-01-12 修回日期:2018-03-30 出版日期:2019-01-28 发布日期:2019-01-31
通讯作者: Bona Lu
基金资助:
Supported by the National Natural Science Foundation of China (21576263, 21625605, 91334204), and the Youth Innovation Promotion Association CAS (2015033).

Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation

Nouman Ahmad^1,2, Yujie Tian^1,2, Bona Lu^1,2, Kun Hong³, Haifeng Wang^1,2, Wei Wang^1,2

1 State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Jiangsu Provincial Engineering Laboratory for Advanced Materials of Salt Chemical Industry, Huaiyin Institute of Technology, Huai'an 223003, China

Received:2018-01-12 Revised:2018-03-30 Online:2019-01-28 Published:2019-01-31
Contact: Bona Lu
Supported by:
Supported by the National Natural Science Foundation of China (21576263, 21625605, 91334204), and the Youth Innovation Promotion Association CAS (2015033).

摘要/Abstract

摘要： The EMMS/bubbling model originally proposed for fluidization of monodisperse particles is extended to fluidization of binary particle mixture in this study. The dense and dilute phases are considered to comprise of two types of particles differing in size and/or density. Governing equations and the stability condition are then formulated and solved by using an optimization numerical scheme. The effects of bubble diameter are first investigated and a suitable bubble diameter correlation is chosen. Preliminary validation for steady state behavior shows the extended model can fairly capture the overall hydrodynamic behaviors in terms of volume fraction of bubbles and average bed voidage for both monodisperse and binary particle systems. This encourages us to integrate this model with CFD for more validations in the future.

关键词: EMMS, Binary mixture, Fluidization, Mesoscale structure

Abstract: The EMMS/bubbling model originally proposed for fluidization of monodisperse particles is extended to fluidization of binary particle mixture in this study. The dense and dilute phases are considered to comprise of two types of particles differing in size and/or density. Governing equations and the stability condition are then formulated and solved by using an optimization numerical scheme. The effects of bubble diameter are first investigated and a suitable bubble diameter correlation is chosen. Preliminary validation for steady state behavior shows the extended model can fairly capture the overall hydrodynamic behaviors in terms of volume fraction of bubbles and average bed voidage for both monodisperse and binary particle systems. This encourages us to integrate this model with CFD for more validations in the future.

Key words: EMMS, Binary mixture, Fluidization, Mesoscale structure

Nouman Ahmad, Yujie Tian, Bona Lu, Kun Hong, Haifeng Wang, Wei Wang. Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation[J]. Chinese Journal of Chemical Engineering, 2019, 27(1): 54-62.

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Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation

Extending the EMMS/bubbling model to fluidization of binary particle mixture: Formulation and steady-state validation

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