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Validation of the CFD-DPM solver DPMFoam in \(\hbox {OpenFOAM}^\circledR \) through analytical, numerical and experimental comparisons

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Abstract

Multiphase flows are relevant in several industrial processes mainly because they are present in the production of a large diversity of products. Hence, the availability of accurate numerical modeling tools, able to cope with this type of flows, is of major significance to provide detailed information about the system characteristics, in order to guide the design activity. This study presents a detailed assessment of a multiphase flow solver able to couple Eulerian and Lagrangian phases, the last modeled through the discrete particle method. The numerical code is already implemented in the open source computational fluid dynamics software package \(\hbox {OpenFOAM}^\circledR \). The solver (DPMFoam) is firstly used to simulate the collision between two particles, for which a good correlation was obtained with the theoretical impulse force value. Subsequently, the solver is employed in the simulation of a pseudo 2D gas-solid flow in a fluidized bed. In this case study, the results obtained for the bubble patterns, time-average flow patterns, bed expansion dynamics and particle phase energy analysis are in agreement with the experimental and numerical results available in the literature. In addition, the numerical pressure drop for the fluidized bed is computed and compared with the analytical Ergun’s pressure drop equation. The accuracy of the numerical results was found to be sensitive to the solid fraction estimation.

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Acknowledgements

This work is funded by FEDER funds through the COMPETE 2020 Programme and National Funds through FCT Portuguese Foundation for Science and Technology under the project EXPL/CTM-POL/1299/2013. In addition, the authors would like to acknowledge the Minho University cluster under the project Search-ON2: Revitalization of HPC infractructure of Minho, (NORTE-07-0162-FEDER-000086), co-funded by the North Portugal Regional Operational Programme (ON.2-0 Novo Norte), under the National Strategic Reference Framework (NSRF), through the European Regional Development Fund (ERDF).

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  1. Institute for Polymers and Composites/i3N, University of Minho, Campus de Azurém, 4800-058, Guimarães, Portugal

    C. Fernandes, D. Semyonov, L. L. Ferrás & J. Miguel Nóbrega

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  1. C. Fernandes
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  2. D. Semyonov
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Fernandes, C., Semyonov, D., Ferrás, L.L. et al. Validation of the CFD-DPM solver DPMFoam in \(\hbox {OpenFOAM}^\circledR \) through analytical, numerical and experimental comparisons. Granular Matter 20, 64 (2018). https://doi.org/10.1007/s10035-018-0834-x

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