|
1
|
Hu S, Liu X. 3D CFD-PBM simulation of gas-solid bubbling beds of Geldart A particles with sub-grid drag correction. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
|
|
2
|
Guo Q, Zhang Y, Vazquez C, Xi K, Boyce CM. Multi‐Fluid
Model Simulations of Gravitational Instabilities in Fluidized Binary Granular Materials. AIChE J 2022. [DOI: 10.1002/aic.17714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Qiang Guo
- Department of Chemical Engineering Columbia University New York New York USA
| | - Yuxuan Zhang
- Department of Chemical Engineering Columbia University New York New York USA
| | - Carolina Vazquez
- Department of Chemical Engineering Columbia University New York New York USA
| | - Kenan Xi
- Department of Chemical Engineering Columbia University New York New York USA
- State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University China
| | | |
Collapse
|
|
3
|
A comparative investigation of flow structures in three-dimensional supercritical water and gas-solid fluidized bed via two-fluid model simulations. J Supercrit Fluids 2022. [DOI: 10.1016/j.supflu.2021.105515] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
|
4
|
Xi K, Guo Q, Boyce CM, Lu Y. Contact-Based Method to Evaluate Mixing in Multicomponent Experiments and Simulations. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kenan Xi
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Qiang Guo
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Christopher M. Boyce
- Department of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Youjun Lu
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
| |
Collapse
|
|
5
|
Tian F, Liu S, Zhao Z, Lei M. Insight on micro bubbling mechanism in a 2D fluidized bed with Group D particles. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2021-0070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
By CFD-DEM simulations, the present work is aimed to investigate the transient gas-solid bubbling mechanisms along a whole bubble lifecycle in a 2D fluidized bed from a micro perspective. Systemic comparisons with CCD measurements confirm the validity of current simulations. Afterward, the manner of particle motion and its driving mechanisms at various stages are investigated. In order to do that, external forces are analyzed at an individual particle level, including the drag, pressure gradient force, and their resultant acceleration together with gravity. Many interesting findings have been achieved. For example, a switch in directions of drag and pressure gradient forces at the root of an initial bubble enables its detachment. And, regarding their contributions to the burst of a bubble, the drag force is several times of the pressure gradient forces. Present efforts help to offer a novel view of particle dynamics during the bubbling fluidization.
Collapse
Affiliation(s)
- Fengguo Tian
- College of Environmental Science and Engineering , Donghua University , 2999 North Renmin Road, Songjiang District , Shanghai 201620 , China
| | - Shulei Liu
- College of Environmental Science and Engineering , Donghua University , 2999 North Renmin Road, Songjiang District , Shanghai 201620 , China
| | - Zifeng Zhao
- College of Environmental Science and Engineering , Donghua University , 2999 North Renmin Road, Songjiang District , Shanghai 201620 , China
| | - Ming Lei
- College of Environmental Science and Engineering , Donghua University , 2999 North Renmin Road, Songjiang District , Shanghai 201620 , China
| |
Collapse
|
|
6
|
Sahoo LK, Sarkar S. Experimental Study of Bubble Behavior in a Two-Dimensional Gas–Solid Tapered Fluidized Bed. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lipak Kumar Sahoo
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| | - Sabita Sarkar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai 600036, India
| |
Collapse
|