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Title: A 2.5D Computational Method to Simulate Cylindrical Fluidized Beds

Abstract

In this paper, the limitations of axisymmetric and Cartesian two-dimensional (2D) simulations of cylindrical gas-solid fluidized beds are discussed. A new method has been proposed to carry out pseudo-two-dimensional (2.5D) simulations of a cylindrical fluidized bed by appropriately combining computational domains of Cartesian 2D and axisymmetric simulations. The proposed method was implemented in the open-source code MFIX and applied to the simulation of a lab-scale bubbling fluidized bed with necessary sensitivity study. After a careful grid study to ensure the numerical results are grid independent, detailed comparisons of the flow hydrodynamics were presented against axisymmetric and Cartesian 2D simulations. Furthermore, the 2.5D simulation results have been compared to the three-dimensional (3D) simulation for evaluation. This new approach yields better agreement with the 3D simulation results than with axisymmetric and Cartesian 2D simulations.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1170045
Report Number(s):
PNNL-SA-104929
AA9010100
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Chemical Engineering Science, 123:236-246
Additional Journal Information:
Journal Name: Chemical Engineering Science, 123:236-246
Country of Publication:
United States
Language:
English

Citation Formats

Li, Tingwen, Benyahia, Sofiane, Dietiker, Jeff, Musser, Jordan, and Sun, Xin. A 2.5D Computational Method to Simulate Cylindrical Fluidized Beds. United States: N. p., 2015. Web. doi:10.1016/j.ces.2014.11.022.
Li, Tingwen, Benyahia, Sofiane, Dietiker, Jeff, Musser, Jordan, & Sun, Xin. A 2.5D Computational Method to Simulate Cylindrical Fluidized Beds. United States. https://doi.org/10.1016/j.ces.2014.11.022
Li, Tingwen, Benyahia, Sofiane, Dietiker, Jeff, Musser, Jordan, and Sun, Xin. 2015. "A 2.5D Computational Method to Simulate Cylindrical Fluidized Beds". United States. https://doi.org/10.1016/j.ces.2014.11.022.
@article{osti_1170045,
title = {A 2.5D Computational Method to Simulate Cylindrical Fluidized Beds},
author = {Li, Tingwen and Benyahia, Sofiane and Dietiker, Jeff and Musser, Jordan and Sun, Xin},
abstractNote = {In this paper, the limitations of axisymmetric and Cartesian two-dimensional (2D) simulations of cylindrical gas-solid fluidized beds are discussed. A new method has been proposed to carry out pseudo-two-dimensional (2.5D) simulations of a cylindrical fluidized bed by appropriately combining computational domains of Cartesian 2D and axisymmetric simulations. The proposed method was implemented in the open-source code MFIX and applied to the simulation of a lab-scale bubbling fluidized bed with necessary sensitivity study. After a careful grid study to ensure the numerical results are grid independent, detailed comparisons of the flow hydrodynamics were presented against axisymmetric and Cartesian 2D simulations. Furthermore, the 2.5D simulation results have been compared to the three-dimensional (3D) simulation for evaluation. This new approach yields better agreement with the 3D simulation results than with axisymmetric and Cartesian 2D simulations.},
doi = {10.1016/j.ces.2014.11.022},
url = {https://www.osti.gov/biblio/1170045}, journal = {Chemical Engineering Science, 123:236-246},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 17 00:00:00 EST 2015},
month = {Tue Feb 17 00:00:00 EST 2015}
}