Fully resolved simulations of single char particle combustion using a ghost‐cell immersed boundary method

A novel ghost‐cell immersed boundary method for fully resolved simulation of char particle combustion has been developed. The boundary conditions at the solid particle surface, such as velocity, temperature, density, and chemical species concentration, are well enforced through the present method. T...

Full description

Saved in:
Bibliographic Details
Published in:AIChE journal 2018-07, Vol.64 (7), p.2851-2863
Main Authors: Luo, Kun, Mao, Chaoli, Fan, Jianren, Zhuang, Zhenya, Haugen, Nils Erland L.
Format: Article
Language:English
Subjects:
Boundary conditions
Carbon dioxide
char combustion
Chemical reactions
Chemical speciation
Combustion
fully resolved simulation
Gasification
ghost‐cell
immersed boundary method
Organic chemistry
Oxidation
Simulation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel ghost‐cell immersed boundary method for fully resolved simulation of char particle combustion has been developed. The boundary conditions at the solid particle surface, such as velocity, temperature, density, and chemical species concentration, are well enforced through the present method. Two semiglobal heterogeneous reactions and one homogeneous reaction are used to describe the chemical reactions in the domain, and the Stefan flow caused by the heterogeneous reactions is considered. A satisfactory agreement can be found between the present simulation results and experimental data in the literature. The method is then used to investigate the combustion property of a char particle and the interaction between CO2 gasification and O2 oxidation. Furthermore, combustion effect on the exchange of mass, momentum and energy between gas‐ and solid‐ phase is explored. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2851–2863, 2018
ISSN:0001-1541
1547-5905
DOI:10.1002/aic.16136