On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study

On the Importance of Model Selection for CFD Analysis of High Temperature Gas-Solid Reactive Flow; Case Study: Post Combustion Chamber of HIsarna Off-Gas System

Hosseini, A. (TU Delft Team Yongxiang Yang)
Hage, Johannes (Tata Steel)
Meijer, Koen (Tata Steel)
Offerman, S.E. (TU Delft Team Erik Offerman)
Yang, Y. (TU Delft Team Yongxiang Yang)

2023

In this paper a CFD analysis of HIsarna off-gas system for post combustion of CO-H2-carbon particle mixture is presented to evaluate the effect of different sub-models and parameters on the accuracy of predictions and simulation time. The effects of different mesh type, mesh grid size, radiation models, turbulent models, kinetic mechanism, turbulence chemistry interaction models, including and excluding gas-solid reactions, number of reactive solid particles are investigated in detail. Based on the accuracy of the predictions and agreement with counterpart measured values, the best combination is selected and conclusions are derived. It was found that radiation and turbulence chemistry interaction model have a major effect on the temperature and composition profile prediction along the studied off-gas system, compared to the variations in other models. The effect of these two models becomes even more evident when the temperature and fuel content of the flue gas are high.

HIsarna ironmaking
CFD modelling
radiation modelling
combustion modelling
turbulence modelling
gas‐solid reaction
turbulence‐chemistry interaction

http://resolver.tudelft.nl/uuid:ac241ea2-5eff-415f-b8e2-cbb15e1ea389

https://doi.org/10.3390/pr11030839

2227-9717

Processes, 11 (3)

Institutional Repository

journal article

© 2023 A. Hosseini, Johannes Hage, Koen Meijer, S.E. Offerman, Y. Yang