A combined experimental and numerical investigation of flow dynamic in a methane reformer filled with Α-Al₂O₃-supported catalyst

TY - JOUR

T1 - A combined experimental and numerical investigation of flow dynamic in a methane reformer filled with Α-Al2O3-supported catalyst

AU - Pashchenko, Dmitry

N1 - Publisher Copyright: © 2018 Elsevier Ltd

PY - 2019/4

Y1 - 2019/4

N2 - In this study, the combination of numerical simulations and experiments have been carried out to investigate a flow dynamics in a methane reformer that filled with the porous nickel-based catalyst. CFD-modeling was performed in commercial software ANSYS Fluent. The high density meshes were generated for numerical investigation. The numerical simulation is performed for the wide range of the Reynolds numbers. The experimental investigation allowed obtaining an array of experimental data for verification of a numerical model. The comparison of the pressure drops between experimental and simulation results show a good correlation with divergence of results less than 7–8%. To determine the effect of porosity properties of the medium on numerical results, two cases of CFD modeling were realized (with taking into account the porous medium properties and without it). The discrepancy between results is increasing with an increase of the gas flow rate, while for the low flow rates the results are almost similar. The local resistance coefficient of a packed-bed as a function of inlet velocity were obtained. It was found that the local resistance coefficient in the velocity range from 0.5 m/s to 3 m/s varies more than twice.

AB - In this study, the combination of numerical simulations and experiments have been carried out to investigate a flow dynamics in a methane reformer that filled with the porous nickel-based catalyst. CFD-modeling was performed in commercial software ANSYS Fluent. The high density meshes were generated for numerical investigation. The numerical simulation is performed for the wide range of the Reynolds numbers. The experimental investigation allowed obtaining an array of experimental data for verification of a numerical model. The comparison of the pressure drops between experimental and simulation results show a good correlation with divergence of results less than 7–8%. To determine the effect of porosity properties of the medium on numerical results, two cases of CFD modeling were realized (with taking into account the porous medium properties and without it). The discrepancy between results is increasing with an increase of the gas flow rate, while for the low flow rates the results are almost similar. The local resistance coefficient of a packed-bed as a function of inlet velocity were obtained. It was found that the local resistance coefficient in the velocity range from 0.5 m/s to 3 m/s varies more than twice.

KW - CFD modeling

KW - Catalyst

KW - Packed bed

KW - Particle shape

KW - Pressure drop

UR - http://www.scopus.com/inward/record.url?scp=85059643080&partnerID=8YFLogxK

U2 - 10.1016/j.ijheatmasstransfer.2018.12.150

DO - 10.1016/j.ijheatmasstransfer.2018.12.150

M3 - 文章

AN - SCOPUS:85059643080

SN - 0017-9310

VL - 133

SP - 1110

EP - 1120

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

ER -