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

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Abstract

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.

Original languageEnglish
Pages (from-to)1110-1120
Number of pages11
JournalInternational Journal of Heat and Mass Transfer
Volume133
DOIs
StatePublished - Apr 2019
Externally publishedYes

Keywords

  • CFD modeling
  • Catalyst
  • Packed bed
  • Particle shape
  • Pressure drop

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